Verilink PRISM 41TDM User Manual

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PRISM 41TDM

DDS

CSU/DSU

34-00275.4

December 1999

RO N T

This document does not create any express or implied warranty about Verilink or about its products or services. Verilink’s sole warranty is contained in its product warranty. The end-user documentation is shipped with Verilink’s products and constitutes the sole s pecifications referred to in the pr oduct warra nty. Verili nk has made reasonab le efforts to verif y that the in forma tion con tained herein is ac curate , but Verilink assumes no responsibility for its use or for any infringement of patents or other rights of third parties that may result. The customer is solely responsible for verifying the su itability of Verilink’s products for it s use. Specifications are subject to change without notice.

Manual reorder # 34 - 00275

Edition, December 1999

ATTER

Trademarks

Acknowledgment

Verilink is a registered trademark of Verilink Corporation. Any named products herein are trademarks of their respective companies.

The software used in the SNMP function of this product contains material derived from the following source:

Redistributions in binary form must reproduce the above copyright notice, this list of conditions, and the following disclaimer in the documentation and/ or other materials provid ed with the dis tribution. All advertis ing materials mentioning features or use of this software must display the following acknowledgment:

This product includes software developed by the University of California, Berkeley and its contributors.

Neither the name of the University nor the names of its contributors may be used to

✍

endorse or promote products derived from this software without specific prior written

permission.

This softwar e is provided by the rege nts and contri butors ‘as is’ an d any express or implied warr anties, inclu ding, but not limit ed to, the imp lied warranti es of merchantability and fitness for a particular purpose are disclaimed. In no event shall the regen ts or contributo rs be liable for any direct, ind irect, incide ntal, special, exemplary, or consequential damages (including, but not limited to, procurement of substitute goods or services; loss of use, data, or profits; or business interruption) however caused and on any theory of liability, whether in contract, strict liability, or tort (including negligence or otherwise) arising in any way out of the u se of this softwa re, even if advised o f the possibili ty of such damage.

FCC Requirements

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and if not installed and used in accordance with

the instruction manual, may cause harmful interference to radio communications. Operation of this e quipment in a re sidentia l area is likely to c ause ha rmful interference. The user will be required to correct the interference at his own expense.

Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions:

•

This device may not cause harmful interference.

•

This device must accept any interference received, including interference that may cause undesired operation.

Shielded cables must be used with this unit to ensure compliance with the Class A

✍

FCC limits.

This equip ment c omplies with Part 68 o f the F CC Ru les. O n the rear or bott om of this unit is a label that contains the FCC registration number and other information . If reque sted, provid e this in formation t o the tele phone co mpany.

iii

All direct connections to network

lines must be made using standard plugs and jacks (compliant with Part 68). The t able at ri ght prese nts a list of appli cable registra tion jack USOCs, facility interface codes (FIC), and service order codes (SOC). These are required when

Port ID REN/SOC FIC USOC

2.4 kbps

4.8 kbps

9.6 kbps

19.2 kbps

38.4 kbps 56 kbps 64 kbps

6.0F

04DU5 - 24 04DU5 -48 04DU5 - 96 04DU5 - 19 04DU5 - 38 04DU5- 56 04DU5 - 64

RJ- 48S

ordering serv ice from the telc o. The table at right

displays the modem option registration c odes.

An FCC compliant telephone cord and modular plug is provided with your

Port ID REN/SOC FIC USOC

ISDN DBU 6.0F 02IS5 RJ - 49C

equipment. If the unit appears to be malfunctioning, it should be disconnected from the

network lines until the source of trouble is determined to be your equipment or the telephone line. If your equipment needs repair, it should not be reconnected until it is repaired.

The unit has been designed to prevent harm to the network. If the telephone

company finds that the e quipment is excee ding tolerab le parameters, it c an temporarily disconnect service. In this case, the telephone company will give you advance notice, if possible. You will be advised of your right to file a complaint with the FCC.

No customer is authorized to repair this equipment, regardless of warranty status.

✍

If the telephone company alters its equipment in a manner that will affect the use

of this device, it must give you advance warning so that you can have the opportunity for uninterrupted service.

In the event of equipment malfunction, all repairs should be performed by our

company or an authorized agent. It is the responsibility of users requiring service to report the need for service to our company or to one of our authorized agents.

Canadian Emissions Requirements

Warran ty

Customer Service

This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications.

For the DC powered units only, end users should use existing battery sources or a CSA cer tifie d power supp ly.

Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites applicables aux appareils numériques (de la class A) prescrites dans le Règlement sur le brouillage radioélectrique edicté par le ministère des Communications du Canada.

Verilink's product warranty covers repair or replacement of all equipment under normal use for a five-year period from date of shipment. Replacement products may be new or reconditioned. Any replaced or repaired product or part has a ninety (90) day warranty or the remainder of the initial warranty period, whichever is longer. Our in-house Repair Center services on a standard 10-workday-turnaround basis.

Verilink offers the following services:

•

System Engineers at regional sales offices for network design and planning assistance (800) 837- 4546

Returning Products

Safety Precauti ons

•

Technical Assistance Center for free 24x7 telephone support during installation, maintenance, and troubleshooting at (800) 285- 2755 and support@verilink.com

•

Return Materials Authorization (RMA) (800) 926- 0085, ext. 2282 or 2322

•

Maintenance contracts and leasing plans (800) 837-4546, ext. 2323

•

Technical Training on network concepts and Verilink products at (800) 837-4546, ext. 2323 or reach us by e-mail at training@verilink.com

•

Web site at www.verilink.com A product must be assigned a Return Materials Authorization (RMA) number

before it is sent to Ve rilink for repa ir. An RMA number is issued by Veri link Customer Service at (800) 926- 0085, ext. 2282 or 2322.

When handling this equipment, follow these basic safety precautions to reduce the risk of electr ic shock and in jury:

•

Follow all warnings and instructions marked on the product and in the manual.

•

Unplug the hardware from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleaners. Use a slightly damp cloth for cleaning.

•

Do not place this product on an unstable cart, stand, or table. It may fall, causing serious damage to the product.

•

Slots in the unit are provided for ventilation to protect it from overheating. These openings must not be blocked or covered. Never place this product near a radiator or heat register.

•

This product should be operated only from the type of power source indicated on the marking label and manual. If you are unsure of the type of power supply you are using, consult your dealer or local power company.

•

Do not allow anything to rest on the power cord. Do not locate this product where the cord interf eres with the fr ee movement of people.

•

Do not overload wall outlets and extension cords, as this can result in fire or electric shock.

•

Never push objects of any kind into the unit. They may touch dangerous voltage points or short out parts that could result in fire or electric shock. Never spill liquid of any kind on this equipment.

•

Unplug the equipment from the wall outlet and refer servicing to qualified service personnel under the following conditions:

Important Notice

•

When the power supply cord or plug is damaged or frayed.

•

If liquid has been spilled into the product.

•

If the product has been exposed to rain or water.

•

If the product has been dropped or if the housing has been damaged.

The product referenced by this document was originally developed and sold by TxPORT®, Inc. In 1998, TxPORT was acquired by Verilink® Corporation, an industry-leading supplier of WAN access products for telecommunications network service providers and corporate enterprises. As a Verilink customer, you will continue to receive the highest quality technical support and customer service available. While this product is now proudly associated with Verilink, please note that the TxPORT name may continue to be used to identify pre-existing proprietary properties.

Table of Contents

vii

Front Matter

Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii

Acknowledgment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii

FCC Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . ii

Canadian Emissions Requirements . . . . . . . . . . . . . . . iv

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv

Customer Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv

Returning Products . . . . . . . . . . . . . . . . . . . . . . . . . . . iv

Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv

Important Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .v

About This Guide

What is a reference guide . . . . . . . . . . . . . . . . . . . . . . .1

Where do I go for information. . . . . . . . . . . . . . . . . . . .1

Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

1 General

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Network Interface . . . . . . . . . . . . . . . . . . . . . . . . .4

DDS-I Port Data Rates. . . . . . . . . . . . . . . . . . . . . .4

DDS-II Port Data Rates . . . . . . . . . . . . . . . . . . . . .5

Diagnostics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Management Interfaces . . . . . . . . . . . . . . . . . . . . .5

Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Industry Listings . . . . . . . . . . . . . . . . . . . . . . . . . .7

Ordering Information. . . . . . . . . . . . . . . . . . . . . . . . . . .7

Optional Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . .8

2Installation

Unpacking and Inspection. . . . . . . . . . . . . . . . . . . . . . .9

Supplied Materials. . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Front Panel Indicators . . . . . . . . . . . . . . . . . . . . . . . . . .9

BACKUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

TEST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

ALARM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

POWER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Front Panel Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Scroll. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Select . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Port Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

LAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

SLIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

SUPV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

DBU. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

NET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Port A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Port B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Power Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . .14

3 Front Panel Interface

Interface Conventions . . . . . . . . . . . . . . . . . . . . . . . . .16

Menu Title . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Menu Element . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Information Element . . . . . . . . . . . . . . . . . . . . . .16

Cursor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Network Configuration . . . . . . . . . . . . . . . . . . . . . . . .17

DDS Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Circuit Assurance. . . . . . . . . . . . . . . . . . . . . . . . .18

Anti-Streaming Timer . . . . . . . . . . . . . . . . . . . . .18

Alarm Thresholds. . . . . . . . . . . . . . . . . . . . . . . . .18

DTE Port Parameters . . . . . . . . . . . . . . . . . . . . . . . . .18

Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Port A/Port B. . . . . . . . . . . . . . . . . . . . . . . . . . . .19

DBU Configuration . . . . . . . . . . . . . . . . . . . . . . .21

SNMP Configuration . . . . . . . . . . . . . . . . . . . . . . . . .23

Unit IP Address . . . . . . . . . . . . . . . . . . . . . . . . . .23

Router IP Address . . . . . . . . . . . . . . . . . . . . . . . .24

Subnet Mask. . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Filter IP Address . . . . . . . . . . . . . . . . . . . . . . . . .24

Trap IP Address . . . . . . . . . . . . . . . . . . . . . . . . . .24

SNMP Set. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Read Community. . . . . . . . . . . . . . . . . . . . . . . . .24

Write Community . . . . . . . . . . . . . . . . . . . . . . . .24

System Contact . . . . . . . . . . . . . . . . . . . . . . . . . .24

System Name . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

System Location. . . . . . . . . . . . . . . . . . . . . . . . . .24

Reset LAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Loop Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

BERT Function . . . . . . . . . . . . . . . . . . . . . . . . . .25

Local Loop. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Far V.54 Loop . . . . . . . . . . . . . . . . . . . . . . . . . . .26

V.54 Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

DTE-A Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

DTE-B Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Save Configuration . . . . . . . . . . . . . . . . . . . . . . .27

viii

SUPV Rate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

SLIP Rate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

IP Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Contrast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

4 Terminal Interface

Interface Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Interface Conventions. . . . . . . . . . . . . . . . . . . . . . . . .29

Device Type and Revision. . . . . . . . . . . . . . . . . .30

Date/Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Element ID. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Menu Title . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Cursor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Field Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Alarms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

NET Alarms. . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

DTE Alarms. . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Loss of Signal Seconds . . . . . . . . . . . . . . . . . . . . 32

Out of Service Seconds . . . . . . . . . . . . . . . . . . . . 32

Out of Frame Seconds . . . . . . . . . . . . . . . . . . . . . 32

FDL Errored Seconds . . . . . . . . . . . . . . . . . . . . . 32

Reset Alarm Registers. . . . . . . . . . . . . . . . . . . . . 33

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Clear Tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Clear Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Loop. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Unloop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Loop Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Activate Remote Access . . . . . . . . . . . . . . . . . . . 35

BERT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Test Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Pattern Sync. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Elapsed Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Bit Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Errored Seconds. . . . . . . . . . . . . . . . . . . . . . . . . . 35

% EFS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Start Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Reset Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

NET Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

DTE Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Near Loops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Far Loops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

DDS Network Parameters. . . . . . . . . . . . . . . . . . 37

DTE Port Parameters. . . . . . . . . . . . . . . . . . . . . . 39

Alarm Configuration. . . . . . . . . . . . . . . . . . . . . . 41

DBU Configuration. . . . . . . . . . . . . . . . . . . . . . . 43

TCP/IP Configuration . . . . . . . . . . . . . . . . . . . . . 45

SNMP Configuration . . . . . . . . . . . . . . . . . . . . . 46

Management Ports. . . . . . . . . . . . . . . . . . . . . . . . 48

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Utilities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Element ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Unit Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

LCD Contrast . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Set Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Set Date. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

New Password. . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Store Parameters to EEPROM . . . . . . . . . . . . . . 52

Maintenance Reset . . . . . . . . . . . . . . . . . . . . . . . 52

Factory Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

ASNMPAgent

RFC 1213 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

systemTable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

ifTable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

DDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

DDS Network Objects. . . . . . . . . . . . . . . . . . . . . 57

DDS DTE Objects. . . . . . . . . . . . . . . . . . . . . . . 59

TxPORT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

B Customer Service

Support from Your Network Supplier . . . . . . . . . . . . 67

Support from Verilink . . . . . . . . . . . . . . . . . . . . . . . . 67

Telephone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

E-mail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Internet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . 68

Optional Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Returning Products. . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Index

BOUT

HIS

UIDE

What is a reference guide

Where do I go for information

This manual is a reference guide. It provides information concerning unit configuration, cabling, and testing/troubleshooting on a function-by-function basis. It is not a users guide containing step-by-step procedures. This manual is designed to be used for specific information about a command, menu field, port, etc. Unless otherwise noted, the information in this guide applies only to the PRISM 41TDM (also referred to as the unit).

The chapters and appendix in this manual are arranged for quick reference.

1 General - This chapter summarizes the product and its use including unit features

and specifications as well as ordering nnumbers.

2 Installati on - This chapter describes unit configuration including port and interface

connections, and powering.

3 Front Panel Interface - This chapter describes the menu screens and conventions

accessed through the front panel interface. These menu screens include the Password, Network Configuration, DTE Port Parameters, SNMP Configuration, Diagnostics, Utilities, and Status options.

4 Terminal Interface - This chapter describes the menu screens and conventions

accessed through a VT100 interface. These menu screens include the Alarms, Element Maintenance, Configuration, Alarm Configuration, SNMP Configuration, Management Ports, Summary, and Utilities options.

A SNMP Agent - This appendix defines all MIB commands and responses for the

unit. Specifically, this unit recognizes the RFC 1213, DDS enterprise, and TxPORT enterprise MIBs.

2 CHAPTER : ABOUT THIS GUIDE

Conventions

Convention Description

✍

Enter vs. Type When the word

Syntax vs. Command When the word

Text represented as

screen displa y

Text represented as

commands

Keys When specific keys are referred to in the text, they are called out by their labels, such as

Italics Italics

The following table lists the conventions that are used throughout this guide.

notice

A unit trouble if the warning is not heeded.

A the end user.

Enter key. Do not press the Return or Enter key when an instruction simply says

syntax is provided. You must evaluate the syntax and supply the appropriate port, path, value, address, or string.

When the word have been supplied and you can enter the command as shown in text.

This typeface

command syntax, for example:

NetLogin:

This typeface

SETDefault !0 -IP NETaddr = 0.0.0.0

Return key

If two or more keys are to be pressed simult aneously, the keys are linked with a plus sign (+), for example:

Press Ctrl+C to copy a selected text into a paste buffer.

calls attentions to important features or instructions.

caution

alerts you to serious risk of data loss or other results that may cause you or the

warning

alerts you to the ris k of seriou s damage to the unit or inju ry and possibl e death to

enter

is used in this guide, it means type something, then press the Return or

type

syntax

is used in this guide, it indicates that the general form of a command

Example: Enable RIPIP by using the following syntax: SETDefault !<port> -RIPIP CONTrol = Listen In this example, you must supply a port number for !<port>.

command

Example: Remove the IP address by entering the following command: SETDefault !0 -IP NETaddr = 0.0.0.0

For consistency and clarity, the full form syntax (upper- and lowercase letters) is

✍

provided. However, you can enter the abbreviated form of a command by typing only the uppercase portion. You can enter the comman d in either upper- or lowercase letters at the prompt.

the Escape key

are used to denote

is used in this guide, it indicates that all variables in the command

is used to represent displays that appear on your terminal screen and

is used to represent commands that you enter, for example:

, or they may be shown as

new terms

emphasis

Return

Escape

the

ENERAL

Introduction

The PRISM 41T DM (Time Division Multiplexer) is th e ideal soluti on for internal networking and frame relay access to a local area network (LAN) or other data applications. It offers a managed interface into standard DDS service supporting both synchronous and asynchronous data.

Delivered in a standalone housing, the unit can be installed and operated on a desktop or in a rack mount configuration with full access to configuration, status, and diagnostic features available through a front panel screen using the front panel control buttons and indicators or through a functional menu structure using a VT100 interface.

The PRISM 41TDM contains an embedded SNMP agent allowing access directly from a LAN. This agent supports MIB-II and proprietary DDS and TXPORT MIBs providing information specific to the unit’s operation. The unit also supports terminal sess ions via Telnet.

The TCP/IP connection can be accessed through the standard SLIP interface or through the optional Ethernet or Token Ring interface. The unit supports two DTE ports. Ports A and B are software selectable for V.35, RS-232, or EIA-530.

The PRISM 41TDM has diagnostic features allowing quick and easy troubleshooting. The unit responds to all standard loop codes from the telco and can initiate remote V.54 loopbacks. An internal BERT can be used for testing. Line conditions are monitored and reported through the front panel, a user connection to the terminal interface, a Telnet connection, or through SNMP.

The dial backup feature ensures that critical data applications are secure. The dedicated line service is monitored for trouble conditions. When a line failure is detected, the unit establishes a dial connection through a backup port. Once the backup link is up, the unit routes the customer data through the switched service. When dedicated line service is restored, the unit can automatically change back. The dial backup port uses an internal basic rate ISDN terminal adapter.

TRANSPORT

BACKUP TEST ALARM POWER

PRISM 41TDM

Figure 1-1

SCROLLEXIT SELECT

PRISM 41TDM

4 CHAPTER 1: GENERAL

Features

•

Desktop or ra ck mount com patible Embedded SNMP agent supports the standard MIB-II, DDS enterprise, and

TxPORT enterprise MIBs Embedded Telnet support Optional Eth ernet or Token Ring Network Inte rface Card (NIC ) for integral L AN

interface TCP/IP connection through the standard SLIP interface or the optional Ethernet or

Token Ring inter face 56 kbps DDS-I or 64 kbps clear channel DDS-II service, multiple async and sync

DTE rates supported Complete diagnostic capabilities including multiple loops and built-in BERT Simple setup and software management through

•

a VT100 comp atible terminal interface

•

the embedded SNMP agent

•

a Telnet session

Specifications

Network Interface

DDS-I Port Data

Rates

•

Programmable alarm thresholds

•

Remote communication channel for far-end unit configuration

•

Flash memory allows field software upgrades

Service Types: DDS-I or DDS-II clear channel conforming to TR 62310 Operating Modes: Full duplex, point-to-point, multi-point Line Rates: 56 and 72 kbps Loop Range: Up to 45 dB of loss Line Connection: RJ-48C jack, 8-pin modular Timing Source: DDS-I - Network, Internal

DDS-II - Networ k

Antistream Timer: Off, 10, 30, or 60 seconds

DDS-I Network at 56 kbps

Standard mode

Por t A . Sync Only : 56 kbps Por t B . Inactive

Specifications

Proprietary, non-TDM mode

Por t A . Sync: 2.4, 4.8, 9.6, 19.2, 38.4, 52 kbps

Async: 2.4, 4.8, 9.6, 19.2, 38.4, and 57.6 kbps

Por t B . Inactive

Proprietary, TDM mode

Por t A . Sync: 2.4, 4.8, 9.6, 19.2, and 31.2 kbps

Async: 2.4, 4.8, 9.6, 19.2, and 31.2 kbps

Por t B . Sync: 2.4, 4.8, 9.6, 19.2, and 31.2 kbps

Async: 2.4, 4.8, 9.6, 19.2, and 31.2 kbps

Only one port can be set for 31.2 kbps at a time. If Port A is set to 31.2 kbps, Port B

✍

is limited to 19.2 kbps. If Port B is set it 31.2 kbps, Port A is limited to 19.2 kbps.

DDS-II Port Data

Rates

DDS-II Network at 64/72 kbps

Standard Mode

Por t A . Sync: 64 k bps Por t B . Inactive

Proprietary, Non-TDM Mode

Por t A . Sync: 2.4, 4.8, 9.6, 19.2, 38.4, 56, and 60 kbps

Async: 2.4, 4.8, 9.6, 19.2, 38.4, 56, and 57.6 kbps

Por t B . Inactive

Proprietary, TDM Mode

Por t A . Sync: 2.4, 4.8, 9.6, 19.2, and 38.4 kbps

Async: 2.4, 4.8, 9.6, 19.2, and 38.4 kbps

Por t B . Sync: 2.4, 4.8, 9.6, 19.2, and 38.4 kbps

Async: 2.4, 4.8, 9.6, 19.2, and 38.4 kbps

Only one port can be set for 38.4 kbps at a time. If Port A is set to 38.4 kbps, Port B

✍

is limited to 19.2 kbps. If Port B is set it 38.4 kbps, Port A is limited to 19.2 kbps.

Diagnostics

Management

Interfaces

Loopbacks: V.54 (receive and send), alternating loop (DDS-I),

latching lo op (DDS-II)

BERT: 511 pattern

SUPV Port

(Supervisory)

Connection: 8-pin modular (RS-232) Data Rates: 1.2, 2.4, 9.6, and 19.2 kbps

6 CHAPTER 1: GENERAL

SLIP Port

(Serial Line Internet Protocol)

Connection: 8-pin modular (RS-232) Data Rates: 1.2, 2.4, 9.6, & 19.2 kbps

THERNET

(optional)

Connection: 8-pin modular Network Protocol: TCP / IP- based networks Data Rate: 10 Mbps Compatibility: 10BASE-T, ISO/IEC 8802-3

OKENRING

(optional)

Connection: 8-pin modular Network Protocol: TCP/IP- based networks Data Rate: 4 and 16 Mbps Compatibility: Type 3 UTP, ISO/IEC 8802-5

Dial Backup

Connection: 6-pin modular Backup Service: ISDN, sync

Pow er

Mechanical

Environmental

Configuration: Information for backup unit is stored in 41TDM and

transmitted to backup unit by inband AT commands

Dialing: Numbers programmed and stored in 41TDM, and transmitted

to backup unit by inband AT commands

Restoral: Manual or automatic restoral to leased line service

115 VAC: 116 mA, 8 watts, 27 BTU maximum

Housing: Plastic standalone case Mounting: Desktop or horizontal rack Dimensions: 12 inches (30.40 cm) wide

2 inches (5.08 cm) high 9 inches (22.86 cm) deep

Operating Temp: 32° to 122°F (0° to 50°C) Storage Temp: −4° to 185°F (−20° to 85°C) Humidity: 95% Maximum (Non-Condensing)

Compatibility

TR62310: November 1987 TR62310A: December 1989 (addendum 3) TR41450: November 1981

Ordering Information

Internet Standards: RFC1157 (SNMP)

RFC 1155 (SMI) RFC 1213 (MIB -II) RFC 1055 (SLIP) Enterprise T xPORT MIB Enterprise D DS MIB

MIB - II: Device identification and interface performance data. All

applicable objects and re porting trap s maintaine d.

Industry Listings

Ordering Information

FCC Compliance: Part 15 Class A, Subpart B, Part 68

U.S. Safety: UL 1950, 3

Edition Canadian Safety: CSA C22.2 No. 950-95 Industry Canada: CS-03, Issue 8

Each PRISM 41TDM unit is supplied with a reference manual and is equipped with data ports. Also provided is an 8-pin modular to 8-pin modular (four twisted pairs) network cable (9- 1001 -004-010). Table 1-1 displays the unit ordering numbers and options.

Ta b l e 1 - 1

Part Number Description

F-4103-001--11100 F-4103-001--11101

Unit Ordering Numbers

41TDM, 115 V 41TDM, 115 V, ISDN

8 CHAPTER 1: GENERAL

Optional Equipment

Table 1-2 lists the available optional equipment for the installation and operation of the PRISM 41TDM.

Ta b l e 1 - 2

Network Cables

9-1001-070-xxx 9-1544-619-xxx 9-1001-004-xxx

EIA-530 Cables

9-1001-511-xxx 9-1001-511N-xxx 9-1001-512-xxx 9-1001-512N-xxx

Dial Back-Up Cables

9-1001-110-xxx 8- pin to 6-pin DBU to IS DN interface

V.35 Cables

9-1001-052-xxx 9-1001-053-xxx 9-1001-086-xxx

Option Equipment for the PRISM 41TDM

DDS cross-over kit Network LAN interface

DB-25 to DB-25 male to male, straight through DB-25 to DB-25 male to male, null modem DB-25 to DB-25 male to female, straight through DB-25 to DB-25 male to female, null modem

DB-25 to Winchester 34-pin male to male, straight through DB-25 to Winchester 34-pin male to female, straight through DB-25 to Winchester 34-pin male to male, null modem

RS-232 Cables

9-1001-211-xxx 9-1001-212-xxx 9-1001-044-xxx

*xxx denotes the cable lengt h (in feet).

Cable Kits

9-1001-072-1 9-1001-073-2 9-1001-091-1 9-1001-091-2

Adapters

9-1001-015-1 9-1001-015-2 9-1001-016-1 9-1001-016-2

MIBs

9-1000-1000- 1 9-1000-4000- 1

DB-25 to DB-25 male t o male, straight t hrough DB-25 to DB-25 male to female, straight through DB-25 to DB-25 male to male, null modem

8-pin RJ-48 to IB M Type 1(Token Ring) DB-9 female to 8-pin RJ -48 (PC to SUPV) 8-pin RJ-48 to DB- 25 male (modem to SUPV) 8-pin RJ-48 to DB- 25 female (modem to SUPV)

DB-25 male to 8-pin (modem to SUPV) DB-25 female to 8-pin (modem to SUPV) DB-25 male to 8-pin (t erminal to SUPV) DB-25 female to 8-pin (terminal to SUPV)

TxPORT MIB DDS MIB

Rack Mount Kits

9-3100-002-1 9-3100-002-2

19-inch 23-inch

NSTALLATION

This chapter describes each of the front panel indicators and buttons as well as the communication ports and power supply on the rear of the unit.

Unpacking and Inspection

Supplied Materials

Front Panel Indicators

BACKUP

After receiving the shipment, inspect the shipping container and contents. If the contents of the shipment are incomplete or, if there is mechanical damage or defect, notify Verilink Customer Service. If the shipping container or cushioning material is damaged, notify the carrier and Verilink immediately and make a notation on the delivery receipt that the container was damaged (if possible, obtain the signature and name of the person making delivery). Retain the packaging material until the contents of the shipment have been checked for completeness and the instrument has been checked both mechanically and electrically.

The base shipment contains a PRISM 41TDM unit with captive power supply (F-4103-001--11100), an 8-pin to 8-pin modular network cable (9-1544-619-009), a reference manual (34-00275), and configuration guide (45-00129). A DBU-to-ISDN in terface cable (9 -1001-110-xxx ) is also included on units with the optional DBU port (xxx denotes the cable len gth in feet).

Four front panel indicators provide a visual identification of test results and alarms.

This amber indicator blinks when a DBU connection is being established or terminated. It is On when the DBU is actively transferring data.

POWER

Front Panel Buttons

TEST

ALARM

This amber indicator is On when the unit is transmitting loop code, unloop code, or the 511 BERT pattern. It also is On when the unit is placed in a loop mode such as line, data, V.54, etc.

This red indicator is On when the unit is in an active alarm condition.

This green indicator is On when power is applied to the unit.

Three buttons on the front panel allows selecting, scrolling, and exiting the front panel interface menus for the unit .

10 CHAPTER 2: INSTALLATION

Port Connections

Exit

Scroll

Select

LAN

This button returns the program to the previous menu. Once at the ma in menu, the Exit button closes the interface session. Modifications to some menus do not take effect until after that menu is exited.

This button allows scrolling through a list of options for each menu item selected.

This button allows choos ing a specific item (s imilar in func tionality to th e Return key). Pressing the Select button on a user-selectable item makes that parameter become the new setting and the unit returns to the previous menu.

On the rear of the unit, there are seven port connections: LAN, SLIP, SUPV, DBU, DDS, Port A and Port B as shown in Figure 2-1.

115VAC 50/60Hz

116ma

LAN SLIP SUPV DDSDBU

Figure 2-1

PRISM 41TDM (Rear View)

PORT A PORT B

The unit has an 8-pin modular jack labeled LAN. It can be equipped with either an internal Et hernet or Token Ring network inte rface card (NI C) for connec tion to a local area network (LAN) without changing the rear panel. This port functions only when the optional NIC is installed. If the NIC is not installed, use the SLIP port connection (page 11).

Network management is performed through the LAN port as well as the SUPV port (page 12) and the SLIP port (page 11). The unit incorporates the full TCP/IP stack, supports in-bound Telnet, and has an embedded SNMP agent for trap reporting or SNMP monitoring and management supporting the DDS specific and TXPORT enterprise MIBs as listed in SNMP Agent on page 53.

Ethernet

The Ethernet in terface complie s with standard twisted pair, 10BASE-T requirements. Table 2-1 shows the pinouts for the 8 - pin modular connection. Before connecting the unit to the LAN, configure the LAN interface using the SNMP Parameters screen (page 23 for the front panel interface or pag e 46 for the termin al

Ta b l e 2 - 1

Pin Ethernet Interface

1 Data Out (+) 2 Data Out (-) 3 Data In (+) 4Not Used 4Not Used 6 Data In (-)

Ethernet Pinout

interface) of the unit firmware.

Port Connections

Ta b l e 2 - 2

Token Ring Pinout Assignments

Pin Token Ring Interface

1 Not Used 2 Not Used 3 Data Out (-) 4 Data In (+) 5 Data In (-) 6 Data Out (+)

DTR Out 1 RTS Out 2 Frame Gnd 3 Data Out 4 Data In 5 Signal Gnd 6 CTS In 7 DCD In 8

PC (DTE)

Port

1 DCD 8 CTS 5 Frame Gnd 2 RXD 3 TXD NC Signal Gnd 7 RTS 4 DTR

8-Pin Modular

DB-9

Figure 2-2

Terminal Connection Pinout Assignments

Token Ring

The Token Ring in te rface (Type 3) is designed to operate on both 4 and 16 Mbps networks and complies with standard unshielded twisted pair (UTP) requirements. Table 2-2 shows the pinout for the 8 - p in modular LAN connection.

Before connecting the unit to the LAN, configure the LAN interface using the SNMP Parameters screen (page 23 for th e front panel inte rface or page 46 fo r the terminal in terface) of the unit firmware. Connection to an IBM Type 1 cable requires a Verilink adapter kit (9-1001-072-1). This kit includes an impedance matching adapter.

SLIP

The SLIP port is an 8-pin modular jack (electrically RS-232) DCE port configured for 8 bits, no parity, and 1 stop bit. The bit rate defaults to 19200 bps but can be changed through the terminal interface (see Management Ports on page 4-18). Refer to Custom er Service on pa ge iv for any cabling info rmation. Thi s port is accessible through either a direct connection or a dial-up connection via an AT command se t compatible modem.

Network management is performed through the SLIP port as well as the LAN port (page 10) and the SUPV port (page 12). The unit incorporates the full TCP/IP stack, supports inbound Telnet, and has an embedded SNMP agent for trap reporting or SNMP monitoring and management supporting the DDS specific and TXPORT enterprise MIBs as listed in SNMP Agent on page 53.

Direct Connection

UPV

The SLIP port connects to

LIP

a terminal server or router that provides SLIP access to the LAN. The TCP/ IP connection is always up in this mode. An RS-232 to terminal cable connection (

9-1001-073-2

) must be

used.

12 CHAPTER 2: INSTALLATION

Dial Connection

In this mode, a mod em is connected to the SLIP port allowing initiati on of a SLIP connection to the unit from remote si tes w henever access is desired. Configure the modem to ignore DTR, enable auto answer, inhibit command echo, and return verbose result codes. Also, when the unit has alarm messages to transmit, it dials out of the port using the telephone number programmed in the Management Ports screen on page 48. When a connection is made, the unit outputs the ASCII characters stored in its buffer. If a telephone number is not programmed, the unit never dials out but a call can be dialed in. The IP connection must be changed to the SLIP port in the TCP/IP screen on page 45. The SLIP and LAN port cannot both be active at the same time. An RS-232 to modem cable connection (

9-1001-091-1

) must be used.

UPV/SLIP

DTR Out 1 RTS Out 2 Frame Gnd 3 Data Out 4 Data In 5 Signal Gnd 6 CTS In 7 DCD In 8

Figure 2-3

Port

8-Pin Modular

Modem Connection Pinout Assignments

Modem (DCE)S

20 DTR 4RTS 1Frame Gnd 2 TXD 3 RXD 7 Signal Gnd 5CTS 8DCD

DB-25

SUPV

The SUPV port is an 8 - pin modular jacks (electrically RS-232) DCE port configured for 8 bits, no parity, and 1 stop bit. The SUPV port bit rate can be set through the front panel interface to 1200, 2400, 9600, or 19,200 bps. Figure 2-2 provides the direct connection pinout. Figure2-3 provides the dial connection pinout. See Appendix B, Customer Service, for cable information. The C all O n Ala rm (C OA) fea tu re wor ks through the supervisory port only.

The unit firmware, as well as the COA feature on page 48, can be configured through this port. This port can be accessed through either a direct VT100 connection or a dial-up connection via an AT command set compatible modem. Configure the modem to ignore DTR, enable auto answer, inhibit command echo, and return verbos e result codes.

The modem hangs up if the unit is called and sent a break command before

✍

receiving a connect message.

Network management is performed through the SUPV port as well as the LAN port (page 10) and the SLIP port (page 11). The unit incorporates the full TCP/IP stack, supports inbound Telnet, and has an embedded SNMP agent for trap reporting or SNMP monitoring and management supporting the DDS specific and TXPORT enterprise MIBs as li sted in Appendi x A.

Port Connections

Ta b l e 2 - 3

DBU Pinout Assignments

Dial Backup Connection

Modem Pinout

1 N/C 2 N/C 3 ISDN U-Interface Ti p 4 ISDN U-Interface Ring 5 N/C 6 N/C

Ta b l e 2 - 4

RJ-48S Pinout Assignments

Pin NET Interface

1 Data Out (Tip) 2 Data Out (Ring) 3 No t Used 4 Not Used 5 Not Used 6 Not Used 7 Data In (Tip) 8 Data In (Ring)

DBU

NET

The Dial Backup port is a 6-pin modular connector that supplies the connection to the switched network when the internal Dial Backup option is installed. The device can be configured through AT commands configured in the DBU screen of the terminal inte rface on (Section 4.5.7, page 4-12). The pinout is shown in Table 2-3. Interface c ables can be ordered from Verilink Customer Service (pa ge 67).

The DDS networ k is connect ed through a standard RJ-48S (8-pin modular) connector labeled NET. The pinout is shown in Table 2-4.

In accordance with FCC Rules, Part 68.218(b), notify the telephone company before disconnecting this product.

The network si de of the PRISM 41TDM is refe rred to as the ne twork interfac e. This interface contain s an ALBO ( automat ic line build- out) allowing the unit t o be located a sub stantial di stance away from t he telco networ k interface wit h a receive signal level down to - 45 dB.

14 CHAPTER 2: INSTALLATION

Por t A

Port A is a software selectable data port (on a 25- pin connector). The software can toggle between V.35, RS-232, and EIA-530. Pin functions for the interfaces are listed in Table 2-5.

FCC rules require that interconnecting cables carrying high-speed data be shielded appropriately to minimize radio frequency interference.

Ta b l e 2 - 5

ITU Circuit Name V.35 RS-232 EIA-530 DCE

101/AA Frame Ground A 1 1 Gnd 102/AB Signal Ground B 7 7 Gnd 103 / BA Transmit Data P, S 2 2, 14 In 104 / BB Receive Data R, T 3 3, 16 Out 105 / CA Request to Send C 4 4, 19 In 106/CB Clear to Send D 5 5, 13 Out 107 / CC Data Set Ready E 6 6, 22 Out 108 / CD Data Term Ready H 20 20, 23 In 109/CF Data Carrier Detect F 8 8, 10 Out 114 /DB Transmit Clock Y, AA 15 12, 15 Out 115 / DD Receive Clock V, X 17 9, 17 Out 141/LLB Local Loopback 18 18 In 140 /RLB Re mote Loo pback 21 21 In 142 / TM Test Mode 25 25 Out

Ports A and B Pinout Assignments

Power Connection

Por t B

Port B is a software selectable data port (on a 25 -pin connector). The software can toggle between V.35, RS-232, and EIA-530. Pin functions for the interfaces are listed in Table 2-5.

FCC rules require that interconnecting cables carrying high-speed data be shielded appropriately to minimize radio frequency interference.

AC powered units use a 115 VAC captive power supply. There is no power switch. The green power indicator on the front panel is On whenever power is applied. If the indicator does not turn on, recheck the power connections and the primary AC circuit breaker. Per UL 1950 and CSA 950 Clause 1.7.2, if the power supply cord is intended to serve as a disconnect device, a socket must be installed near the equipment and be easily accessible.

PRISM 41TDM >Rev. xx.xx/x.xx

Figure 3-2

Idle Screen

Enter Password > …

Figure 3-3

Password Screen

Main Menu >NET Config

Figure 3-4

Main Menu Screen

RONT

NTERFACE

The front panel interface (Figure 3-1) allows configuring network, port, and SNMP parameters and troubleshooting the unit using loop tests and BERTs without having to physically connect a terminal to the unit. The interface screen can be manipulated using the three front panel buttons. The interface screen and the LED indicators allow seeing the unit’s status.

ANEL

SCROLLEXIT SELECT

Figure 3-1

When power is applied, the PRISM 41TDM displa ys the Idle scree n as shown in Figure 3-2. Press any of the front panel button s to leave the Idle screen and access the interface.

If a password has been established, the password screen (Figure3-3) appears. Enter a correct password to advance to the Main Menu screen.

To enter an established password, press the Scroll button until the desired letter appears. R emember that the password is case-sensitive. Then, press the Sel ect button. Continu e selecting the ap propriate cha racters in this manner until the last character is entered. Then, press the Exit key. A correctly entered password advances the program to the Menu screen. An incorrectly entered password returns an Idle screen. Re-try another password. Refer to New Password on page 52 for information on establishing a password.

PRISM 41TDM Front Panel

TRANSPORT

BACKUP TEST ALARM POWER

PRISM 41TDM

The unit is factory shipped without a programmed password. When accessing this interface fo r the first time, the password prompt does not appear and the interface proceeds directly to the Main Menu screen as shown in Figure 3-4.

16 CHAPTER 3: FRONT PANEL INTERFACE

Interface Conventions

Menu Title

Menu Element

Information Element

The front panel display consists of four components as shown in Figure 3-5: a menu

Menu Title

Cursor

NET Config > Mode... TXP I

Menu Element

Information Element

title, menu el ement, and a cursor.

Figure 3-5

Example T1 Net Params Screen

The menu title announces the general classification for a group of currently accessible functions.

The menu element is a menu or submenu accessible by pressing the Select button. When selecting a menu element, the menu element becomes the menu title and the next lower level in the hierarchy becomes the menu element. For example, if the menu element is NET Config, pressing Select moves NET Config up to the menu title level and Mode appears at the Menu Element level with TXP I being displayed as the option (Figure 3-5).

The Information Element is a user-selectable field for changing the current setting. Initially, it is a display-onl y field and the cursor is located to the left of the Menu Element. To access the Information Element, press the Select button at the desired Menu Element. The cursor moves to the right of the Inform ation Elemen t. Scroll through the available Information Element options by pressing the Scroll button. Press the Select button when the desired option is displayed. The cursor moves back to the left of the Menu Element and the visible Information Element becomes the current setting.

Cursor

The cursor appears on the left or right side of the display screen depending on

Net Config > Mode... TXP I

the element function. When accessing the main menu or scroll through the

Figure 3-6

Cursor on left side of screen

menu elements, the cursor appears on the left side of the screen (Figure 3-6).

To access a user-selectable element (identified on the right side of the screen), press the Select button and the cursor moves to the right side of the

Net Config

Mode... TXP I <

Figure 3-7

Cursor on right side of screen

screen with the cursor pointing back to the left (Figure 3-7).

Scroll through the options available for that function using the Scroll key.

Pressing the Select button changes the user-selectable information element to the visible parameter and immediately returns the unit to the Menu Element and the cursor to the left side of the screen.

When the Exit button is pressed, any changes to the parameters in the information element are disregarded and the cursor returns to the element menu. Everytime the Exit button is pres sed, the cu rsor returns to the next higher level in the menu

Network Configuration

hierarchy. At the main menu, pressing the Exit button logs the unit out of the session.

Network Configuration

DDS Mode

The Network Configuration screen allows setting the DDS mode, timing, and alarm thresholds. Table 3-1 shows the Network Configuration menu structure.

Ta b l e 3 - 1

Mode Rate Timing

TXP-I DDS-II TXP-II DDS-I

Network Configuration Menu

Circuit Assurance

56 K 64 K

Network Internal

Off On

AntiStreaming Timer

--10 seconds 30 seconds 60 seconds

Alarm Thresholds

OOS OOF LOS FDL ART

The unit can operate in one of four DDS modes on two types of DDS lines.

DDS-I

DDS-I is a standard mode compliant with industry DDS-I standards allowing the unit to be end- to -end compatible and interoperate with other-vendor, DDScompliant DSUs.

DDS-II

DDS-II is a stand ard mode that ca n interoperate with other stan dard DDS-II equipment.

Rate

Timing

TXP-I

TXP-I is a proprietary mode for DDS-I lines that require a 41TDM, PRISM 3030/3060, DSU-MP or DSU-DP unit at the other end of the line. This mode allows async-to-sync format conversion, rate adaptation, two-port multiplexing, and an in-band data link.

TXP-II

TXP-II mode is a proprietary mode for DDS-II lines that require a 41TDM, PRISM 3030/3060, DSU-MP or DSU-DP unit at the other end of the line. This mode allows async-to-sync format conversion, rate adaptation, two-port multiplexing, and an in-band data link.

This screen di splays the netwo rk interface line rate automatica lly determine d by the DDS Mode se tting. If the DDS Mode is set to DDS-I or TXP-I, the rat e is automatically set at 56K. If the DDS Mode is set to DDS-II or TXP-II, the rate is automatically set at 64K. When the unit is in TXP-I or TXP-II mode, the DTE rate can be at a differen t value than the value for this rate.

This field selects the bit rate clock source. When selected to Network, timing is derived from the network recovered clock (the normal DDS mode). When selected

18 CHAPTER 3: FRONT PANEL INTERFACE

to Internal, the internal oscillator’s frequency standard (25 ppm) is used for all timing. Internal is only available in DDS-I and TXP-I modes.

Circuit Assurance

Anti - Streaming

Timer

Alarm Thresholds

This option allows the CTS control lead to respond to the data signal from the network. When set to On, the unit turns off the CTS lead when receiving idle code (for example, if DCD is Off). When set to Off, the CTS control lead is not affected by data signals from the network. Circuit assurance is only available in DDS-I mode.

This timer is used to prevent a streaming DTE, on a tributary DSU in a multi-point circuit, fr om lockin g up the circ uit. If th e RTS lead from the D TE stays co nstantly active for the anti-str eaming time, the PRISM 41TDM shu ts off data transmiss ion into the network. Whenever RTS goes inactive, the anti-streaming timer is reset. The timer can be turned Off (-- -) or set for 10, 30, or 60 seconds.

The PRISM 41TDM can generate an alarm condition based on a specific level of performance degradation. Alarm thresholds can be set for periods of 1, 2, 3, 4, 5, 10, 20, and 30 consecutive seconds for the OOS, OOF, FDL, and LOS parameters. A field set to [-- - ] causes the unit n ot to alarm on tha t statistic. To disable alarm reporting, s et all fields to [- --].

OOS

Sets the Out of Service seconds threshold. This occurs when the OOS code is received from the DDS network.

DTE Port Parameters

LOS

Sets the Loss of Signal seconds threshold. This occurs when a valid DDS line is not plugged into the unit.

OOF

Sets the Out of Frame seconds threshold. This occurs on receipt of OOF code from the DDS network.

FDL

Sets the Facility Data Link seconds threshold. This alarm occurs only in TXP-I and TXP-II modes.

ART

Sets the alarm re set timer. The setting deter mines when the Alarm Indication/Contacts are cleared after the last error. The choices are 0, 10, 30, 60, 90, 100, 200, 300, 400, 500, 600, 700, 800, and 900 seconds.

The DTE Port Configuration screen allows setting the operating parameters for Port A and/or Port B. It is important to configure the DTE ports identically at opposite ends of a link. If Port A of one unit is configured for asynchronus 19.2 kbps, then Port A at the far end must also be configured for asynchronus 19.2 kbps. Neglecti ng to d o this inhibi ts the abilit y to p ass D TE traffic from end-to -end . It is also possible that data intended for one port (Port A) might come out the

DTE Port Parameters

opposite port (Port B) at the far end. This data swapping is a side effect of the rate swapping feature and only occurs at DTE rates of 31.2 kbps (TXP-I) and 38.4 kbps

(TXP-II) when the units are improperly configured. Table 3-2 shows the DTE Configuration menu structure.

Ta b l e 3 - 2

Mode Port A / Port B

TDM

NON-TDM

DTE Configuration Menu

Form at Rate

(kbps)

Sync Async

2.4

4.8

9.6

19.2

31.2

8.4 52 56

57.6 60 64

Mode

Interface DSR DCD RTS RTS/CTS

Delay

RS-232 V.35 EIA-530

Force On Test>Off

Force On Idle>Off

Forc e O n Normal

Normal Long

DTR Alarm

Enable Disable

V.54 Loop

Enable Disable

LL Detect

Enable Disable

RL Detect

Enable Disable

The 41TDM DTE interface can operate in two modes: TDM (time division multiplexer) and NON-TDM (standard). In the NON-TDM mode, DTE interface B is disabled allowing DTE interface A to run at higher speeds. In the TDM mode, both DTE inter faces are active and are mult iplexed together in to the single DDS network path. The DDS mode must be set to TXP-I or TXP-II to enable the TDM mode.

Por t A/Por t B

These options allow access to configuration sub-menus specific to the DTE interfaces.

Format

When operating in the DDS-I or DDS-II modes, the DTE interface is always synchronous. When set to the TXP-I or TXP-II modes, the 41TDM DTE interface can operate as synchronous or asynchronous. When a unit is configured for asynchronous DTE data, it operates in the TxPORT proprietary mode and requires another 41TDM (or 3030/3060 with DSU-MP card) on the remote end. The supported asynchronous DTE rates are listed in Table 3-3. The following parameters must be set for asynchronous operation: eight bits per character, one or two stop bits, and no parity.

20 CHAPTER 3: FRONT PANEL INTERFACE

Ta b l e 3 - 3

DDS Mode DTE Mode Format A Data Rates

DDS-I DDS-II TXP-I

TXP-II

Port A / Port B DTE Data Rates

NON-TDM NON-TDM NON-TDM

TDM async

NON-TDM

sync 56K sync 64K async sync

sync async sync async sync

2.4K, 4.8K, 9.6K, 19 .2K, 38.4K, 52K, 57.6K

2.4K, 4.8K, 9.6K, 19 .2K, 38.4K, 52K

2.4K, 4.8K, 9.6K, 19 .2K, 31.2K

2.4K, 4.8K, 9.6K, 19.2K, 38.4K, 56K, 57.6K, 60K

2.4K, 4.8K, 9.6K, 19 .2K, 38.4K, 56K, 60K

2.4K, 4.8K, 9.6K, 19 .2K, 38.4K

Rate

The rate field allows sele cting the DTE in terface line rate . The rate can be set to

2.4, 4.8, 9.6, 19.2, 31.2, 38.4, 52, 56, 57.6, 60, and 64 kbps depending on the DDS mode, DTE mode, and DTE format.

Interface

This field allows selecting the interface for Port A as V.35, RS-232, or EIA-530.

DSR

Data Set Ready is output from the unit to the DTE. Its behavior can be set to TEST>OFF where DSR is On except when the unit is in test or set to Force On all the time regardless of any unit condition.

DCD

Data Carrier Detect is output from the unit to the DTE. Its behavior can be set to one of the fol lowing.

Idle>Off - DCD is On except when the unit is receiving an idle, OOS, or OOF code or an LOS.

Force On - DCD is on all the time regardless of any unit condition.

Far RTS - This option adds tracking of the far end’s RTS lead to the existing Idle>Off capability. DCD is On except when the unit is receiving an OOS, OOF code or an LOS. It is also Off when the far-end unit’s RTS is inactive.

For tracking to occur, set the unit’s Mode to TXP-I or TXP-II and RTS to Normal.

✍

RTS

Request To Send is an input to the unit from the DTE. Clear To Send is an output from the unit to the DTE. When set to Normal, the unit reacts to RTS from the DTE. When RTS is On, the unit transmits data normally and turns CTS to On

DTE Port Parameters

(depending on the setting of Circuit Assurance and after the delay set by the RTS/CTS Delay option). Wh en RTS is Off, the unit transmits idle co de to the network and turns CTS to Off. When set to Force On, the unit ignores the state of the RTS lead from the DTE an d forces it on internall y and forces CTS to On. RTS is ignored when in the unit is in the TDM mode.

RTS/CTS Delay

This option allows choosing the delay on the RTS to CTS transition. When RTS Control is set to Normal, CTS follows the state of RTS after some delay depending on the data rate and the setting of this field. This delay can be Normal or Long with the times shown in Table 3-4.

Ta b l e 3 - 4

DDS Rate Normal Long

56 kbps 0.4 ± 0.02 ms 0.8 ± 0.04 ms 64 kbps 0.3 ± 0.015 ms 0.6 ± 0.03 ms

RTS/CTS Delays

DTR Alarm

Selecting Enable allows the unit to go into alarm on a loss of DTR. This occurs when the DTE port detects a low DTR signal.

V.54 Loop

Selecting Enable allows the unit to respond to inband V.54 loop commands. If Disable is selected, the unit ignores these commands.

LL Detect

This option allows enabling or disabling the local loop activation by the local loopback signal (EIA-530 or RS-232 pin 18) on the DTE interface.

RL Detect

This option allows enabling or disabling the remote loop activation by the remote loopback signal (EIA-530 or RS-232 pin 21) on the DTE interface. Remote loopback causes transmission of V.54 loop or unloop codes to the far-end device.

DBU Configuration

The PRISM 41T DM offers an internal IS DN terminal a dapter through a 6-pin modular connector as an alternate data path in cases where the DDS network connection fails. The DBU function has the following states:

Dial Backup Idle - Status that is retrievable to show that this port is not active. Dial Backup Active - An alarm message is sent when the dial backup becomes

active, thus showing that the main data path is down. Dial Backup Failed - An alarm message is sent when the dial backup link fails to

connect or there is a loss of carrier. The unit continues attempting a DBU link. Pressing the Select button on the Dial Back Up field opens the following

submenus.

22 CHAPTER 3: FRONT PANEL INTERFACE

DBU Command

The choices are as follows.

DISABLE - Does not allow the unit to respond to a dial backup situation. ENABLE - Allow the unit to respond to a dial backup situation. DAILY - Allows the unit to respond to a dial backup situation only during the

specified time for that day. Selecting this option causes the Daily Periods configuration field to appear.

NOREVERT - Allows the unit to respond to a dial backup situation only during the specified time fo r that day. Selecting this opti on causes the Da ily Periods configuration field to appear. The unit remains in Dial Backup mode until the end of the time, even if the line conditions improve.

FDL alarm triggered DBU is always treated as NON-REVERTIVE.

✍

ACTIVATE - Forces the unit to place a call and switch to the dial backup device.

DBU Activator

This field is used to select the alarm the unit uses to activate the dial backup sequence. T he choices f or the DBU Activator are LOS , OOS, OOF, FDL, and any alarm thresholds.

DBU Mode

This field is used to select the unit’s call response mode.

ORIGINATE - The unit initiates a call when needed. ANSWER - The unit only answers an incoming call. CORIG - (Call Back Originate) the unit calls another modem, delivers a password,

and then waits fo r the other mode m to call back. CANSW - (Call Back Answer) the unit answers a call but checks for a password

before allowing a full connection.

DBU Activation Periods

This field allows selecting the time of day the Dial Backup option is allowed to place a backup call. The selections for these fields are 0 to 24. The selections can be scrolled through by pressing the up arrow key. A setting of [00] - [24] means that the unit calls out any time there is an alarm condition on the network. Setting the first field to 8, for a day, and the second field to 17 means that the unit allows Dial Backup operations from 8:00 a.m. to 5:00 p.m. of that day.

The following fields require a string input. Each number is entered using the Scroll key until the desired character is displayed. The Select key moves the cursor to the next position. Continue this pattern until the last character has been selected and press Exit.

SNMP Configuration

132.016.232.000

Figure 3-8

IP Address

DBU Password

If DBU Mode is set to Callback Originate or Callback Answer, this field appears to the right of th e DBU Mode field. A two to ni ne character re presenting the trigger character, and the remaining characters representing the actual password. For example, the trigger character can be a colon (:) and the intended password may be 41TDM. Enter :41TDM in the password field.

Password strings are case sensitive and must be the same in both the Callback

✍

Originate and Callback Answer units. Consult the external DBU device manual for furt her command s.

DBU Dial String

This field is used to en ter the teleph one number tha t the unit calls. T his is a don't care field when the DBU Mode is set to ANSWER. This string must include the

ATDT or other appropriate command prefix.

DBU Init String

This field is used to send an initialization string to an external device.

DBU Disconnect String

SNMP Configuration

Ta b l e 3 - 5

Unit IP Address

xxx.xxx. xxx.xxx

SNMP Configuration Menu

Router IP Address

xxx.xxx. xxx.xxx

Sent to an external device after the data transfer so that the device disconnects from the remote end.

The SNMP (Simple Network Management Protocol) interface is a feature of the PRISM 41TDM providing seamless integration and control of CSU /DSU functions within an existing SNMP managed LAN/WAN environment. SNMP management stations are able to collect and analyze data from all network devices which comply with the SNMP protocol and to manage those devices. SNMP provides a standard means to monitor the status of all compatible network elements. The 41TDM management capabilities are expanded with the TxPORT and enterprise DDS MIBs. Objects in these MIBs, and MIB loading instructions are listed in Appendix A.

The SNMP Configuration screen configures the SLIP SNMP interface. It allows entering parameters required for proper operation of the unit with a SLIP-based LAN manager. Table 3-5 shows the SNMP Configuration menu structure.

Subnet Mask

xxx.xxx. xxx.xxx

Filter IP Address

1–8 1–6 Enable

xxx.xxx. xxx.xxx

Trap IP Address Sets

Disable

xxx.xxx. xxx.xxx

Read Community

Write Community

System Contact

System Name

System Location

Reset LAN

No Yes

Unit I P Address

Each device connected to the LAN is required to have a unique IP address identifier. This field allows entering the unit IP address consisting of an octet separated by periods. Each value ranges from 0 to 255 as shown in Figure 3-8.

24 CHAPTER 3: FRONT PANEL INTERFACE

Router IP Address

Subnet Mask

Filter IP Address

Trap IP Address

Accepts the IP address of a default router, if one is present. This field allows entering the address consisting of an octet separated by periods. Each value ranges from 0 to 255 (Figure 3-8).

Provided to manu ally override the subn et mask setting which is otherw ise discovered by the SNMP agent. This field allows entering the unit subnet mask consisting of an octet separated by periods. Each value ranges from 0 to 255 (Figure 3-8).

Accepts the IP address of the source packet filter. If any of these eight addresses are set, access is allowed only by the specified IP addresses. This field allows entering the filter IP address consisting of an octet separated by periods. Each value ranges from 0 to 255 (Figure 3-8).

Accepts the IP address of a network device where alarm reporting traps are to be sent. The unit detects and reports alarms and provides several options for reporting them including SNMP traps. When a network alarm occurs, the unit sends a trap message to up to six destinations on the network. This field allows entering the unit trap IP address consisting of an octet separated by periods. Each value ranges from 0 to 255 (Figure 3-8).

SNMP Set

Read Community

Write Community

System Contact

System Name

System Location

Enables or disables the SNMP SET command. If this field is set to Disable, then MIB variable changes are not allowed. Refer to Appendix A for detailed information on the SNMP MIB variables.

This field accepts a character string of up to 58 characters identifying the group authorized to per form read op erati ons a s displayed in Figure 3-9.

Read Community

blic

>pu

Figure 3-9

System Edit

This field accepts a character string of up to 58 characters identifying the group authorized to perform write operations.

This field accepts a character string of up to 58 characters identifying the person responsible for a network device.

This field accepts a character string of up to 58 characters identifying the functionality of the network device.

This field accepts a character string of up to 58 characters identifying the physical location of network device.

Reset LAN

Selecting Yes resets LAN interface of the unit.

Selecting the Reset LAN command disrupts data service.

Diagnosti cs

Diagnostics

Ta b l e 3 - 6

Loop Mode

UniBiBERT Reset Sync

TDM mode only.

Diagnostic Menu

BERT Function

Off Net DTE A - Net DTE A - DTE

DTE B - Net DTE B -

DTE

Loop Mode

Yes No

Loss

display only

The Diagnostics screen allows testing functions to be performed on the network or the DTE port. The unit recognizes inband loopback requests as well as local testing and remote network management loopback test commands. The PRISM 41TDM has an internal 511 pattern generator and comparator. The unit can transmit the pattern toward th e DDS line/ne twork or toward the da ta port/DTE in terfaces. Bit Error Rate testing is available on Port B only when the unit is set to TDM mode. shows the Diagnostics menu structure.

Errored Seconds

display only

Local Loop

Bit Error Time Sync Off

display only

HH:MM:SS

display only

In Sync ( No Test (

display only display only

) )

Far V.54 Loop

Off On

V.54

DTE-A Loop

DTE-B Loop

Loop

OffOnOffOnOff

Allows choosing how data is looped back. The options are Bidirectional and Unidirectio nal.

BERT Function

The following menus offer selections for starting a BERT (Bit Error Rate Test) along with test results.

BERT

This selection allows setting the BERT to Off, Net, DTE A - Net, DTE A - DTE, DTE B - Net, or DTE B - DTE.

Off - Shuts down any BERT currently running.

Net - Initiate s a full bandwi dth BERT towards the DDS networ k. Because th e BERT takes up the entire DDS bandwidth, the FDL function (if active) is interrupted .

DTE A - Net - In DDS-I or DDS-II mode, there is no discernible difference between this selection and Net. However, in TXP-I or TXP-II mode, this menu selection initiates a BERT that does not interfere with the FDL (or other DTE port, if active).

DTE A - DT E - I nitiate s a B ERT towards the DT E port A. D TE po rt B (i f in T DM mode) is not affected.

DTE B - Net - In DDS- I or DDS-II mode, there is no discer nible difference between this selection and Net. However, in TXP-I or TXP-II mode, this menu selection initiates a BERT that does not interfere with the FDL (or other DTE port, if active).

26 CHAPTER 3: FRONT PANEL INTERFACE

DTE B - DTE - Initiates a BERT towards the DTE port B. DTE port A (if in TDM mode) is not affected.

Reset

When set to Yes, the BERT error count s and elapsed tim e values are cleared to zero. This p arameter the n returns to No auto matically.

Sync Loss

Displays the number during the test period that the BERT pattern detector lost sync.

Errored Seconds

Displays the errored seconds that have been detected since the test began or since error statistics were last cleared.

Bit Error

Displays the total bit error s detected si nce the test b egan or since error statistics were last cleared.

Time

Local Loop

Far V.54 Loop

V.54 Loop

DTE-A Loop

DTE-B Loop

Displays the elapsed time since a timed test began. A value is displayed only when a test is runnin g. The format is HH:MM:SS.

Sync

Displays the current state of pattern sync during a test. If no test is in progress, then No Test is displayed.

When set to On, the near-end local loop is activated. The choices are On and Off.

When set to On, the V.54 loop pattern is transmitted out to the network. The choices are On and Off.

When set to On, the near-end V.54 loop is activated. The choices are On and Off.

When set to On, the DTE-A loop is activated. The choices are On and Off. This loop is always toward the network. If loop mode is set to Bidirectional, it is towards the DTE-A also.

When set to On, the DTE-B loop is activated. The choices are On and Off. This loop is only available in the TDM mode and also tracks the loop mode settings.

Utilities

Save Configuration

SUPV Rate

SLIP Rate

The Utilities screen allows performing various functions such as setting the time and date, configuring optional ports and their rates, and saving configuration settings. Table 3-7 sh ows the Utilities menu structur e.

Ta b l e 3 - 7

Save Configuration SUPV SLIP

No Yes

Utilities Menu

1.2K

2.4K

9.6K

19.2K

1.2K

2.4K

9.6K

19.2K

IP Port Date Time Contrast

SLIP MM/DD/YY HH:MM:SS 0 – 15

Selecting Yes saves the current configuration to memory and rest arts the unit.

Selecting the Save Configuration command interrupts network data.

The choices for the SUPV line rate are 1.2, 2.4, 9.6, and 19.2 kbps.

The choices for the SLIP line rate are 1.2, 2.4, 9.6, and 19.2 kbps.

IP Port

Date

Time

Contrast

The choices for the IP port are SLIP only.

The current date is set by entering each digit in the standard MM/DD/YY date format. Each field is range checked and automatically limited to the appropriate range of values.

The time is set by entering each digit in the standard 24-hour HH:MM:SS format. Each field is range checked and automatically limited to the appropriate range of value s .

Sets the LCD display contrast to a value between 0 and 15. When scrolling, the screen may appear blank (values 11 through 15). If this occurs, continue scrolling until the contrast is best for viewing (values 1 through 10).

28 CHAPTER 3: FRONT PANEL INTERFACE

Status

The Status screen displays each parameter in an alarm status. The alarm status is identified with an asterisk next to the effected parameter. The Select key is not valid for a value that cannot be edited. Use the Scroll key only to review the Status screen. Table 3-8 shows the Status Displays menu structure.

Ta b l e 3 - 8

Net Status DTE Status A B

OOS OOF

Status Displays Menu

LOS

FDL

Test

DTR-A DTR-B

CS CD TR

RS CS CD TR SR

Net Status

Choices are LOS, OOS, OOF, FDL, and Test.

DTE Status

Choices are DTR-A and DTR-B.

Por t A

This screen provides the status for Port A. The screen shows the RS, CS, CD, TR, and SR headings. An asterisk (*) under the heading indicates activity for Port A.

Por t B

This screen provides the status for Port B. It shows the RS, CS, CD, TR, and SR headings only when the unit is set to TDM mode. An asterisk (*) under the heading indicates activity for Port B.

Figure 4-1

Terminal Interface Layout

ERMINAL

The software interface is embedded inside the unit and requires an ANSI compatible VT100 terminal (ASCII), or a computer running an ANSI terminal emulation program (PROCOMM PLUS LAN, SUPV, or SLIP ports using a Telnet session.

NTERFACE



). This interface is accessed through the

Interface Access

Interface Conventions

Once a compatible VT100 terminal is properly connected to the unit, a terminal interface session can be started by sending a pressing the Enter key four times. If a password has been previously established, enter the correct password to continue the session. The password is case- sensitive. If the password is lost, note the date and time shown on the screen and contact Verilink Technical Support. The procedure to establish or modify a password is provided at Utilities screen on page 51. Once a valid password has been entered, the Main Menu screen is displayed.

The ter minal int erface logs o ff automat ically if a keystroke is not made withi n 10 minutes.

All terminal interface screens have several common components as displayed in Figure 4-1.

k command to the unit or by

brea

30 CHAPTER 4: TERMINAL INTERFACE

Device Type and

Revision

Date / Time

Element ID

Menu Title

The device type (such as PRISM 41TDM) and the revision control numbers are shown in the uppe r left corner. The first number is the hardware revision and the second numbe r is the software r evision. Informatio n is displayed for the near-end unit (connected directly to the terminal) on the top line, and for the far-end unit (connected to the network interface) on the second line. Far-end information is displayed only when available, otherwise, the screen displays a no remote access message. Refer to this information when contacting the factory with inquiries.

When connected to a PRISM 3030 or a PRISM 3060, the second line displays the

✍

physical slot number and DSU number (Slot # DSU #) of the DSU inside the PRISM 3030 or PRISM 3060 unit.

The top right corner of the terminal screen shows the current date and time. These functions are described in Utilities on page 51.

Below the header (PRISM 41TDM), the Element ID is displayed. Refer to Management Ports on page 48 for information on the Element ID.

The menu title (third line, center) denotes the general classification of functions currently accessible such as MAIN or PERFORMANCE.

Cursor

Messages

Diagnostic messages may be displayed at the bottom of the screen.

The terminal interface uses a hig hlighted cur sor to make select ions from menu s and select fields within screens. The cursor is moved in different ways, depending on the terminal emulation program used. Most programs use the Tab and Shift+Tab keys. Other programs use the arrow keys. For keyboards which do not have these standard keys or have only some of them, an alternate set of cursor control commands is provided. Perform each command by pressing a letter key while holding down the Con trol key. Alternate commands can be freely mixed with the keyboard commands.

Ta b l e 4 - 1

Keyboard Command Alternate Command

Left arrow Control+S Right arrow Control+D Up arrow Control+E Down arrow Control+X Backspace Control+H Delete Control+Z Refresh screen Control+U

Keyboard / Alternate Commands

Field Types

Each screen is made up of fields. The two basic field types are user-selectable and display-only. Fields without brackets or parenthesis are display only. They cannot be changed on the screen.

Alarms

If the highlighted cursor can be moved to a field, it is a user-selectable field. User-selectable fields allow for changes to be made or commands to be executed. Most user-selectable fields are enclosed in brackets or parentheses.

Fields enclosed in brackets [ ] offer a list of selections from which to choose. The selections can be scrolled by pressing the spacebar. Each time it is pressed, a new item appears. Select the appropriate choice by pressing Enter.

There are two methods for manipulating fields enclosed in parentheses ( ). Pressing the Enter key on a field such as (Reset) and (Start Test) immediately executes the function. Typing input when the field is highlighted, such as the Subnet Mask field) causes the current entry to be replaced with the new characters. To edit an existing entry rather than replace it, move the cursor to the point that needs editing. Characters can then be inserted or deleted. Typed data is always inserted rather than typed over. If the field is full, though, at least one character must be deleted to add another. Many fields of this type can also be scrolled by pressing the spacebar. Other fields are range checked, where the field cannot be exited with an invalid entry.

Alarms

The Alarms screen (Figure 4-2) allows viewing the alarm status of the network and the DTE interfaces. The parameters shown on the Alarms screen are updated at approximately five-second intervals.

Figure 4-2

Alarms Screen

Element

This field allows reviewing the status and threshold values for the near-end or far-en d uni t.

32 CHAPTER 4: TERMINAL INTERFACE

NET

Alarms

DTE

Alarms

This status line shows the current network signal alarm state (Table 4-2) as determined by the selectable thresholds set in the Alarm Configuration screen (see page 42).

Ta b l e 4 - 2

Alarm Description

None No alarm threshold has been exceeded, although errors may exist that do not

LOSS The Loss Of Signal Seconds thr eshold is exceeded. OOSS OOFS The Out Of Frame Seconds threshold is exceeded. FDL The Facility Data Link threshold is exceeded.

NET Alarm Indicators

exceed thresholds.

The Out Of Service Seconds threshold is exceeded.

This status line shows the selec ted element’s current DTE sign al alarm stat e (Table 4-3). DTE alarms are enabled or disabled through the DTE Port Parameters screen (see page 39).

Ta b l e 4 - 3

Alarm D escription

None D TR on DTE interface is tr ue, or the alarm h as been disabled. DTR A DTR on indicated interface is false. DTR B DTR on indicated interface is false.

DTE Alarm Indicators

Loss of Signal

Seconds

Out of Ser vice

Seconds

Out of Frame

Seconds

FDL Errored

Seconds

The LOSS alarm displays, in the Current column, the consecutive seconds the unit received signal has been interrupted. The Threshold column shows the value (in seconds) that must be met or exceeded to generate an alarm. Setting the Threshold value to 0 disables the alarm. Refer to Alarm Configuration on page 42 to set the alarm parameters.

The OOSS alarm displays, in the Current column, the consecutive seconds the unit has received the out of service code. The Threshold column shows the value (in seconds) that must be met or exceeded to generate an alarm. Setting the Threshold value to 0 disables the alarm. Refer to Alarm Configuration on page 42 to set the alarm parameters.

The OOFS alarm displays, in the Current column, the consecutive seconds the unit received the out of frame code. The Threshold column shows the value (in seconds) that must be met or exceeded to generate an alarm. Setting the Threshold value to 0 disables the alarm. Refer to Alarm Configuration on page 42 to set the alarm parameters.

The FDL alarm detects when the far-end unit encounters a problem even if the DDS line are operating normally. FDL alarms only apply in TXP-I or TXP-II modes and are ignored in the DDS-I, DDS-II, and any test loop or BERT mode.

Maintenance

It shows, in the Current column, the consecutive FDL seconds the unit received. The Threshold column displays the value (in seconds) that must be met or exceeded to generate an alarm. Setting the Threshold value to 0 disables the alarm. Refer to Alarm Configuration on p age 42 to set the ala rm parameters .

Reset Alarm

Registers

Maintenance

Pressing the Enter key with the Reset option highlighted clears all Current alarm parameters.

Use the Maintenance screen (Figure 4-3) to perform loop tests and/or BERT functions on the DDS circuit. BERT is performed by using on-board test facilities. Additional test equipment is not required. Some of these tests can also be activated by the front panel buttons as described in Diagnostics on page 25.

Element

Clear Tests

Clear Alarms

Loop

Unloop

Figure 4-3

Element Maintenance Screen

This field allows testing and reviewing the loop patterns for the near-end or far-end unit.

Pressing Enter on this field clears all local tests and any line loops that have been initiated.

Pressing Enter on this field clears all near-end alarms.

The type of loop is chosen by toggling the spacebar and is executed by pressing Enter. The choices include Local, V.54, Far V.54, DTE A, and DTE B. Far V.54 generates a V.54 loop at the far end.

Pressing Enter takes down the specified loop from the currently selected port. The type of loop is chosen by toggling the spacebar and is executed by pressing Enter. The choices include Local, V.54, Far V.54, DTE A, and DTE B.

34 CHAPTER 4: TERMINAL INTERFACE

Loop Mode

When set to Unidirectional, the NET receive data is looped back to the NET as NET transmit data and continues to pass through the data port to the DTE

Line Loop

Figure 4-4

DTE

Unidirectional Loop

NET

as shown in Figure 4-4. Transmit data fr om the DTE is te rminated.

When set to Bidirectional, the NET receive data is looped back to the NET as NET transmit data as shown in Figure 4-5. Transmit data from the DTE

Local Loop

Figure 4-5

DTE

Bidirectional Loop

NET

is looped back through the data port as receive data to the DTE.

During d ial backup, the lo op mode fi eld is ign ored and al l loops ar e unidirec tional.

✍

this allows testing of the DDS interface during dial backup without disrupting the DTE/DBU data path.

Line Loop

This loop occ urs at the DDS network inter face and activates by the reversal of th e simplex, 20 mA sealing current. This loop can be unidirectional or bidirectional. Circuits DSR and CD are forced Off unless set to Force On.

Data Loop

This loop occurs at the DDS network interface. In DDS-I mode, the data loop activates when the unit receives alternating loop codes in the network receive data stream. It activates by receiving at least four consecutive loop commands and remains looped as long as each third pattern byte is the loop command. It returns to normal operation after at least four pattern bytes that are not the loop command. When the Loop Mode is set to unidirectional, this loop retransmits the PRISM 41TDM received data on the unit transmit data including the remapped loop code. Receive data is unaffected (but includes the modified loop codes) and circuits DSR and CD are Off. When the Loop Mode is set to bidirectional, the DTE is looped back and does not receive the remapped loop codes.

In DDS-II mode, the data loop activates when the latching loopback sequence is received. The sequence consists of 35 or more TIP bytes, 35 or more LSC bytes, 100 or more LBE bytes, 32 or more FEV bytes. Latching loop is deactivated when 31 or more TIP bytes are received.

V.54 Loop

This loop occurs at the DDS network interface and activates after receiving inband V.54 loop codes for at least two seconds followed by all ones in the network receive data stream. When the Loop Mode is set to unidirectional, this loop retransmi ts the PRISM 41 TDM received data on the unit trans mit data inclu ding the remapped loop code. Receive data is unaffected (but includes the modified loop codes) and circuits DSR and CD are Off. When the Loop Mode is set to bidirectional, the DTE is looped back and does not receive the remapped loop codes.

Maintenance

Local Loop

This loop occurs at the DDS network interface as a unidirectional or bidirectional loop. It returns the DDS receive data to the DDS transmit line and the PRISM 41TDM transmit data to the unit receive data output.

Activate Remote

Access

BERT

This field is inte nded for DDS-I and DDS-II si tes. Pressi ng Enter on this field initiates full bandwidth communication with another PRISM 41TDM DDS unit at the far end of the network link. This allows faster updates of far-end terminal interface scree ns. In TXP-I or TX P-II modes, an in -band FDL is always available.

The near-end unit transmits an activation signal to the far-end unit for five seconds. After this peri od, both units a re in remote acce ss mode. While in th is mode, the DCD and DSR signals to the DTE interface are false and the transmit data from the DTE is not transmitted to the network. The command field also changes to read: DEACTIVATE REMOTE ACCESS.

While Remote Access is active, the far-end type/revision inform ation is displayed in the upper left corner of each screen. Also on each screen, a field labeled Element with selectable values of Near and Far appears. Pressing Enter on this field activates the user interface for the selected element.

To terminate Remote Access, press Enter on the Disable Remote Access field. Both units immediately return to normal operation.

During Remote Access, both units return to normal operation if communication with

✍

the far end is lost for 30 seconds.

These fields control t he Bit E rror Rate Test feature. BERT preemp ts user data and can be performed on the DDS network, DTE A, or DTE B (TDM mode only).

Test Length

Pattern Sync

Elapsed Time

Bit Errors

Errored Seconds

Defines the run-time of test pattern generation and error accumulation. The choices are 15 min, 30 min, 60 min, 24 hour, and Continuous.

This field displays the current state of pattern sync during a test. If a test is not in progress, No Test is displayed. If a test is active, but the receiver is not in pattern sync, No Sync is displayed. If the receiver is in pattern sync, In Sync is displayed.

Displays the time elapsed since a timed test began or, if completed, the total test time.

Displays the total bit error s detected si nce the test b egan or since error statistics were cleared (up to 999,999).

This field displays the asynchronous errored seconds that have been detected since the test began or since error statistics were last cleared. This parameter includes bit error seconds and sync loss seconds.

36 CHAPTER 4: TERMINAL INTERFACE

% EFS

Start Tes t

Reset Errors

NET

Status

This ratio is derived from the error-free seconds divided by the seconds accumulated in Elapsed Time.

Pressing Enter with the cursor on this field starts the selected test pattern. Test In Progress appears once the test starts. To end the test, press Enter on Stop Test.

Pressing Enter with the cursor on this field clears the test error results.

This field displ ays the fault st atus of the netwo rk. It indica tes current faul t conditions. It does not indicate that alarm thresholds are exceeded. Status indications are described in Table 4-4.

Ta b l e 4 - 4

Status Description

------- No status is available OK No errors are currently detected.

LOS A loss of signal condition exists. OOF An out of frame condition exists or OOF codes are received. OOS Out of Service codes are received. FDL Facility Data Link errors have occurred.

DTR A DTR from the DTE device is false. DTR B DTR from the DTE device is false.

Status Indications

Status

Near Loops

Far Loops

Configuration

DTE

This field displays the fault status of the DTE. It indicates current fault conditions. It does not indicate that alarm thresholds are exceeded. Status indications are described i n Table 4-4.

Displays the loop status of the near element.

Displays the loop status o f the far element .

The Configuration menu (Figure 4-6) allows viewing and setting configuration parameters for the network elements. To send a new configuration to the unit press Enter on one of the fields or exit the screen.

Changing any of the line or DTE settings briefly interrupts end-to-end traffic as the new setting goes into effect. Choosing an incorrect or invalid setting may disrupt

end-to-end traffic until a proper setting is established.

Configuration

DDS Network

Param et ers

Figure 4-6

Configuration Menu

The DDS Network Configuration screen (Figure 4-7) allows selecting parameters for the network interface.

Figure 4-7

DDS Network Parameters Screen

Element

This field allows modifying the network parameter values for the near-end or far-en d uni t.

Data Mode

The unit can operate in one of four DDS modes on two types of DDS lines.

38 CHAPTER 4: TERMINAL INTERFACE

DDS-I

DDS-I is a standard mode compliant with industry DDS-I standards allowing the unit to be end- to -end compatible and operate with other-vendor, DDS-compliant DSUs.

DDS-II

DDS-II is a standard mode that can operate with other standard DDS-II equipment.

TXP-I

TXP-I is a proprietary mode for DDS-I lines that require a 41TDM, PRISM 3030/3060, DSU-MP or DSU-DP unit at the other end of the line. This mode allows async to sync format conversion, rate adaptation, two-port multiplexing, and an in-band data link.

TXP-II

TXP-II mode is a proprietary mode for DDS-II lines that require a 41TDM, PRISM 3030/3060, DSU-MP or DSU-DP unit at the other end of the line. This mode allows async to sync format conversion, rate adaptation, two-port multiplexing, and an in-band data link.

Rate

If the DDS M ode is set to DDS-I or T XP-I, the ra te is automa tically set at 56K. If the DDS Mode is set to DDS-II or TXP-II, the rate is automatically set at 64K. When the unit is in TXP-I or TXP-II mode, the DTE rate can be at a different value than the value for this rate.

Timing

This field selects the bit rate clock source. NET uses the received network signal as the clock source. INT uses the internal oscillator (25 ppm) for the clock source and is available only in the DDS-I or TXP-I modes.

Circuit Assurance

When Circuit As suranc e is set t o Off, CTS follows RTS. When RTS changes to the On state, CTS changes to the On state after the RTS/CTS delay. CTS changes to the Off state within o ne bit time when RTS changes to th e Off state.

When Circuit Assurance is set to On, CTS follows RTS if DCD is On. When RTS changes to the On state, CTS changes to the On state after the RTS/CTS delay if DCD is On. CTS changes to the Off state when RTS changes to the Off state. CTS is Off if DCD i s Off.

Set RTS to Normal on the DTE PORT parameters when Circuit Assurance is On. The Force DCD option changes to Normal.

Antistreaming Timer

The Antistreaming Timer is controlled by RTS. If RTS remains enabled long enough for a timeout to occur, the unit drops CTS and stops sending DTE data. The Antistreaming Timer is reset when RTS changes to the Off state. The choices are Off, 10, 30, and 60 seconds.

Configuration

DTE Port

Param et ers

The DTE Port Configuration screen (Figure 4-8) allows configuring either or both DTE ports. The options for Port A are always available. The options for Port B are only available if the DTE mo de is set to TDM. It is important that the DTE ports are configured identically at opposite ends of a link. If Port A of one unit is configured for asynchronous 19.2 kbps, then Port A at the far end must also be configured for asynchronous 19.2 kbps. Neglecting to do this inhibits the ability to pass DTE traffic from end-to-end. It is also possible that data intended for one port (Port A) can come out the opposite port (Port B) at the far end. This data swapping is a side effect of the rate swapping feature and only occurs at DTE rates of 31.2 kbps (TXP-I) and 38.4 kbps (TXP-II) when the units are improperly configured.

Figure 4-8

DT E Po r t Par a me te r s S cr e en

Element

This field allows reviewing and modifying the DTE port parameter values for the near-end or far-end unit. The screen position on either unit is independent. If the unit is in the DTE Port Parameters screen on the near-end unit, toggling the Element to Far displays the last screen accessed on the far-end unit such as the Main Menu, Utilities, Configuration, or Summary screen.

DTE Mode

The 41TDM DTE interfaces can operate in two general modes: TDM and Non-TDM. In the Non-TDM mode, DTE interface B is disabled and DT E inte rface A can run at higher speeds. In TDM mode, both DTE interfaces are active, and are multiplexed togethe r into the single DDS network path . Select TXP-I or TXP-II mode on the Network Parame ters screen to ena ble TDM.

Type

The choices for Port A and Port B are V.35, RS-232D, and EIA-530.

40 CHAPTER 4: TERMINAL INTERFACE

Port Format

When operating in the DDS-I or DDS-II modes, the DTE interface is always synchronous. When set to the TXP-I or TXP-II modes, the 41TDM DTE interface can operate as synchronous or asynchronous. When a unit is configured for asynchronous DTE data, it operates in the TxPORT proprietary mode and requires another 41TDM or a PRISM 3030/3060 with a DSU-MP on the remote end. The supported asynchronous DTE rates are listed in Table 4-5. The following parameters must be set for asynchronous operation: the number of async bits per character is 8, the number of stop bits is 2, and parity is none data rates for ports A and B.

Table 4-5 shows the

Ta b l e 4 - 5

DDS Mode DTE Mode Format Data Rates

DDS-I NON-TDM sync 56 K DDS-II NON-TDM sync 64K TXP-I NON-TDM async

TXP-II NON-TDM async

* Only on e port (A or B) can be set to the highest rate at any given time. For example, if

Port A is set to the highest rate, Port B can be set no higher than the next highest rate.

Data Rates

TDM async

sync

2.4K, 4.8K, 9.6K, 19.2K, 38.4K, 52K, 57.6K

2.4K, 4.8K, 9.6K, 19.2K, 38.4K, 52K

2.4K, 4.8K, 9.6K, 19.2K, 31.2K

2.4K, 4.8K, 9.6K, 19.2K, 38.4K, 56K, 57.6K, 60K

2.4K, 4.8K, 9.6K, 19.2K, 38.4K, 56K, 60K

2.4K, 4.8K, 9.6K, 19.2K, 38.4K

* *

Por t Ra te

Selects the DTE interface line rate. The choices are 2.4, 4.8, 9.6, 19.2, 31.2, 38.4, 52, 56, 57.6, 60, and 64 kbps. The available rates depend on the port, net mode, DTE mode, and the DTE format.

DSR

Data Set Ready is output from the unit to the DTE. Its behavior can be set to TEST>OFF where DSR is On except when the unit is in test or set to Forced On all the time rega rdless of any unit condition.

DCD

Data Carrier Detect is output from the unit to the DTE. Its behavior can be set to one of the fol lowing.

Idle>Off - DCD is On except when the unit is receiving an idle, OOS, or OOF code or an LOS.

Force On - DCD is on all the time regardless of any unit condition.

Configuration

Far RTS - This option adds tracking of the far-end’s RTS lead to the existing Idle>Off capability. DCD is On except when the unit is receiving an OOS, or OOF code or an LOS. It is also Off when the far-end unit’s RTS is inactive.

For tracking to occur, set the unit’s Mode to TXP I or TXP-II and RTS to Normal.

✍

RTS

Request To Send is an input to the unit from the DTE. Clear To Send is an output from the unit to the DTE. The behavior of RTS and CTS is set as follows. In the Normal setting, the unit reacts to RTS from the DTE. When RTS is On, the unit transmits data normally and turns CTS On (depending on the Circuit Assurance setting and after the delay set by the RTS/CTS Dela y option) . When RTS is Off, the unit t ransmits idle cod e to the network a nd turn s CTS Off. In the Forced On setting, the unit ignores the state of the RTS lead from the DTE and forces it On internally a nd forces CTS On.

RTS is ignored w hen in the TD M mode.

✍

RTS/CTS Delay

This option allows choosing the delay on the RTS to CTS change. When RTS Control is set to Normal, CTS follows the state of RTS after some delay depending on the data rate and the setting of this field. This delay can be Normal or LONG as shown in Table 4-6.

Ta b l e 4 - 6

DDS Rate (kbps) Normal Option Long Option

56 0.4 ± 0.02 ms 0.8 ± 0.04 ms 64 0.3 ± 0.015 ms 0.6 ± 0.03 ms

DTR Alarm

Selecting Enable allows the unit to alarm on loss of DTR. This occurs when the DTE port sees that the DTR signal is low. The default setting is Disable.

V.54 Loop

Selecting Enable allows the unit to respond to inband V.54 loop commands. If Disable is selected, the unit ignores these commands.

LL Enable

This option allows enabling or disabling the local loop activation by the local loopback signal (EIA-530 or RS-232 pin 18) on the DTE interface.

RL Enable

RTS/CTS Delay Options

Alarm Configuration

The Alarm Configuration screen (Figure 4-9) allows reviewing and setting alarm related thresholds for the selected element. These thresholds are the minimum

42 CHAPTER 4: TERMINAL INTERFACE

acceptable performance levels. To modify the parameters, highlight the desired statistic and press the spacebar to increase the value or backspace to decrease the value and press Enter. If this value is surpassed, an alarm indication appears. Setting a field to none (--) disables the alarm for that statistic.

Figure 4-9

Alarm Configuration Screen

Element

This field allows reviewing and modifying the threshold values for the near-end or far-end unit. The screen position on either unit is independent. If the unit is in the DTE Port Parameters screen on the n ear-end unit, togg ling the Element to Far displays the last screen accessed on the far-end unit such as the Main Menu, Utilities, Configuration, or Summary screen.

Loss of Signal Seconds

A one second period in which the DDS received signal is interrupted. The choices are 1, 2, 3, 4, 5, 10, 20, 30, and none (--).

Out of Service Seconds

A one second period during which the Out Of Service code is received. The choices are 1, 2, 3, 4, 5, 10, 20, 30, and none (--).

Out of Frame Seconds

A one-second period in which the Out Of Frame code is received or a frame sync loss occurred. The choices are 1, 2, 3, 4, 5, 10, 20, 30, and none (--).

FDL Errored Seconds

A one-second period in which two or more FDL messages (out of the last 32 FDL messages) has an incorrect CRC or during which the message No Far End Response is displayed in the upper left hand corner of the screen. The choices are 1, 2, 3, 4, 5, 10, 20, 30, and none (--).

Configuration

Alarm Reset Timer

Determines the seconds after alarm conditions clear before indications are removed. The choices are 10, 30, 60, 90, 100, 200, 300, 400, 500, 600, 700, 800, 900, and None (--). If this value is set to None, the alarm conditions do not automatically reset.

DBU Configuration

This unit offers a method of providing an alternate data path when the DDS network connection fails. This alternate data path is established across an ISDN line. The DBU Configuration screen (Figure 4-10) allows establishing the DBU protocols.

Figure 4-10

DBU Configuration Screen

DBU Status

Shows the current state in the left brackets and the programming choices in the right brackets. The possible status values are DISABLED, ENABLED, DISALLOWED, DIALING, CONNECTING, ANSWERING, and ACTIVE. The available DBU commands are as follows:

DISABLE - DBU is disabled. ENABLE - The DBU activates when the DDS line fails. ENABLE DAILY - The DBU only activates if the time is set in the DBU

Activation Periods. ACTIVATE - Manually activates the D BU function. NOREVERT - Allows the unit to respond to a dial backup situation only during

the specified time period for that day. Selecting this option causes the Daily Periods configuration field to appear. The unit remains in Dial Backup mode until the end of the period, even if the line conditions improve.

FDL alarm triggered DBU is always treated as NON-REVERTIVE.

✍

44 CHAPTER 4: TERMINAL INTERFACE

DBU Activator

This field allows sele cting the ala rm the unit uses to activate the dial bac kup sequence. The choices are LOS, OOS, OOF, FDL, or ANY alarm thresholds.

DBU Activation Periods

This field allows selecting the time of day that the Dial Backup option is allowed to place a backup call. The selections for these fields are 0 to 24. The selections can be scrolled through by pressing the space bar. A setting of [00] - [24] means that the unit calls out anytime there is an alarm condition on the network. Setting the first field to 8, for a day, and the second field to 17 allows Dial Backup operations from 8:00 a.m. to 5:00 p.m. of that day. A setting of [00]-[00], [24]-[24] (or any matching start and end times) disables DBU for that day.

The DBU command must be set to Enable Daily or Nonrevertive to enable the daily

✍

activation periods.

DBU Mode

This field allows selecting the call response mode for the unit. If set to ORIGINATE, the unit initiates a call when needed. If set to ANSWER, it only answers an incoming call. If set to CALLBACK ORIGINATE, it calls the pre-defined number, issues a password, hangs up, and then waits for the other end to call back. Aft er the password is delivered in the secure mode, the unit is in ANSWER mode only. If the setting is CALLBACK ANSWER, the unit waits for a call and password from the CALLBACK ORIGINATE unit.

DBU Dial String#

This field is used to enter the telephone number of up to 30 characters that the unit calls. This is a don't care field when the Dial Backup Mode is ANSWER. This string must include the ATDT command prefix.

Initialization String

This field allows e ntering th e modem initializat ion string of up to 30 chara cters. See the modem documentation for further information. The default setting is AT&F.

Disconnection String

This field allows entering a character string of up to 30 characters to be output when the modem session is terminated. The default setting is ATH0.

Reset String

This field allows e ntering ad ditional initializa tion comma nds to be sent dur ing a DBU failure. To reduce the average DBU connection time, commands are not sent at every DBU attempt. Consult the external DBU device manual for further commands .

Internal ISDN Setup

Selecting this command opens the internal ISDN setup screen to allow configuring the internal ISDN terminal adapter. The setup screen is specific to the optional terminal ad apter. It does not allow enteri ng gene ric AT commands. Instead, c hoose

Configuration

the ISDN switch type and version. Then, enter the TEI, SPID, and directory number information supplied by the ISDN service provider. The PRISM 41TDM uses this data to generate the correct AT commands for the DBU Configuration screen Reset fields.

This scree n is only available if an int ernal I SDN ter minal ad apter is in stalled i n the

✍

unit.

Internal ISDN Module Access

This command is used only by Verilink service personnel when troubleshooting problems in the field. It is not user accessible.

TCP/IP

Configuration

The TCP /IP Configuration screen (Figure 4-11) is accessible for the SLIP, Ethernet or Token Ring interface. It allows for the entry of those parameters required for proper operation with an Ethernet or Token Ring - based LAN manager.

Figure 4-11

TCP/IP Configuration Screen

Element

This field allows reviewing and modifying the TCP/IP addresses for the near-end or far-end unit. The screen position on either unit is independent. If the unit is in the DTE Port Parameters screen on the near-end unit, toggling the Element to Far displays the last screen accessed on the far-end unit such as the Main Menu, Utilities, Configuration, or Summary screen.

Reset LAN Interface

For changes to take effect , the LAN inte rface must be re set or the para meters must be stored to the EEPROM. Selecting this field opens a confirmation screen which prompts proceeding with the reset.

Selecting the Reset LAN Interface command disrupts data service.

46 CHAPTER 4: TERMINAL INTERFACE

LAN Connection

This field allows selecting SLIP interface for the network connection.

PRISM I P Address

This field accepts IP addresses. Each device connected to the LAN is required to have a unique IP address identifier.

Subnet Mask

This field is provided to manually override the subnet mask setting which is otherwise discovered by the TCP/ IP software.

Router IP Address

This field accepts the IP address of the default router.

Filter IP Address

These eight fields accept the IP address of the source packet filter. If any of these fields are set, access is allowed only by the specified IP addresses.

SNMP

Configuration

The SNMP Configuration screen (Figure4-12) is accessible for the SLIP, Ethernet or Token Ring SNMP interface. It allows for the entry of those parameters required for proper operation with an SNMP-based network manager.

Figure 4-12

SNMP Configuration Screen

The PRISM 41TDM supports alarm reporting by SNMP TRAPs when running the LAN or SLIP interface. If the unit’s IP connection is LAN or direct SLIP, it expects an IP connection to always be present and thus sends its TRAP messages immediately. If the IP connection is dial SLIP, the unit dials out from the modem connected to the SLIP port using the number programmed in the SNMP Configuration screen and sends trap messages upon connection.

Configuration

The PRISM 41TDM has an embedded SNMP agent supporting MIB-2 and a proprietary DDS MIB. The SET command is supported and has the functionality described below. The PRISM 41TDM also supports a single Telnet session.

Element

This field allows reviewing and modifying the SNMP addresses for the near-end or far-end unit. The screen position on either unit is independent. If the unit is in the DTE Port Parameters screen on the n ear-end unit, togg ling the Element to Far displays the last screen accessed on the far-end unit such as the Main Menu, Utilities, Configuration, or Summary screen.

SNMP Sets

This field enables or disables the set commands (SNMP). Refer to Appendix A, SNMP Agen t, for detailed in formation on th e available MIB variables.

TRAP IP Address

These six rows require numeric entries. Each row contains four 3- digit numbers which are separated by periods. Each of these numbers can range from 0 to 255.

These fields accept the IP address of a network device to which alarm reporting traps are to be sent. The unit detects and reports alarms and provides several options for reporting them, one of which is SNMP traps. When an alarm occurs, the unit sends a trap message to up to six destinations on the user’s network. The trap message is formatted per RFC 1157. The generic trap type is enterprise specific (generic - trap = 6).

Up to six trap IP addresses can be assigned to report via SNMP. The unit reports each alarm by transmitting an SNMP trap to each trap IP address. DDS network problems often cause more than one alarm type. In these cases, multiple trap messages are generated, each with a different specific trap type.

The following five menu item s allow the entry of up to 58 charac ters identif ying the appropriate group, person, device function, or unit location.

Read Community

This display accepts a character string of up to 58 characters identifying the group authorized to perform read operations.

Write Community

This display accepts a character string of up to 58 characters identifying the group authorized to perform write operations.

System Contact

This display accepts a character string of up to 58 characters identifying the person responsible for a network device.

System Name

This display accepts a character string of up to 58 characters identifying the functionality of the network device.

48 CHAPTER 4: TERMINAL INTERFACE

System Location

This display accepts a character string of up to 58 characters identifying the physical location of network device.

Management

Por t s

The Management Ports screen (Figure 4-13) sets the following parameters for the Call On Alarm (COA) connection on both the SUPV and SLIP ports.

Figure 4-13

Management Ports Screen

Element

This field allows reviewing and modifying the SUPV and SLIP port management values for the near-end or far-end unit.

COA Connection (SUPV)

This field controls the remote alarm re porting. ASC II alarm reporti ng through th e supervisory port is independent of trap alarm reporting. The ASCII alarm report type is set by the following choices:

Disabled - Alarm reporting is disabled. Dial - Sends reports through an attached AT command set compatible modem

connected to the SUPV serial port, which must dial out to a remote modem. The message format is described in the Element ID field.

Direct - Sends reports to a printer or terminal connected directly to the supervisory port.

COA messages are reported in the following format in the DIAL or DIRECT modes only:

Element ID<CR><LF> TxPORT DDS DSU Alarm Report MM/DD/YY HH:MM:SS<CR><LF> NET Alarms: alarms <CR> <LF>

Configuration

DTE Alarms: alarms <CR> <LF>

where (alarm s) is a string cons isting of some or all of the identi fiers LOS, OOF, OOS, or DTR A, or DTR B. The following is an example:

Site B

TxPORT DDS DSU Alarm Report 08/04/96 17:24:55 NET Alarms: LOS DTE Alarms: DTR A

The user-programmable Element ID string (see Utilities on page 51) is transmitted first to allow the COA function to send a message with a specific meaning to some host (such as a log on message).

Primary Dial String

This field is an ASCII string for the primary call on alarm telephone number used in the DIAL mode . This string mus t include the ATDT command prefix (ex. ATDT555-1212). The unit attempts three times to connect using the primary number. If these attemp ts fail, it m akes three more attempts using the secondary number (if it is not blank). If the secondary number fails, the unit waits five minutes and re-attempts to communicate with the primary number. If a connection is not made, the unit sends a notification message and then disconnects.

Secondary Dial String

This field is an ASCII string for the secondary call on alarm telephone number used in the DIAL mode. This string must include the ATDT command prefix (ex. ATDT555-1212). If the unit did not connect using the primary number, it makes three attempts to connect using the secondary number (if it is not blank). If the secondary number fails, the unit waits five minutes and re-attempts to communicate with the primary number. If a connection is not made, the unit sends a notification message and then disconnects.

Initialization String

The modem initi alization stri ng is entered in th is field. Refer to the mo dem’s documentatio n for further in formation. The default setting is ATE1Q0V1S0=1.

Disconnection String

This field identifies the character string to be output when the modem session is terminated. T he default settin g is ATH.

SLIP Port Rate

The choices are 1.2K, 2.4K, 9.6K, and 19.2K.

SLIP Connection

This field controls remote SNMP trap reporting. Trap reporting through the SLIP port is independent of ASCII alarm reporting. The trap report type is set by the following choices:

Disabled - Trap reporting is disabled.

Dial - Sends traps through a modem to the SLIP server.

50 CHAPTER 4: TERMINAL INTERFACE

Direct- Sends traps directly to the SLIP server.

Primary Dial String

Secondary Dial String

Initialization String

The modem initi alization stri ng is entered in th is field. Refer to the mo dem’s documentation for further information. The default setting is ATE1Q01V1S0=1.

Disconnection String

This field identifies the character string to be output when the modem session is terminated. T he default settin g is ATH.

Compressed SLIP

The choices are Auto, Disable, and Enable. The Auto setting allows the unit to negotiate with the far end to enable or disable SLIP compression, depending on the type of connection.

Utilities

Summary

The Summary screen (Figure 4-14) is a display- only screen summarizing the unit configuration including stored memory. The current column displays the current unit configuration. The saved column displays the configuration stored in memory.

Figure 4-14

Summary Screen

Utilities

The Utilities screen (Figure 4-15) handles the functions described in the following paragraphs.

Figure 4-15

Utilities screen

Element

This field allows reviewing and modifying the values for the near-end or far-end unit. The screen position on either unit is independent. If the unit is in the DTE Port Parameters screen on the near-end unit, toggling the Element to Far displays the last screen accessed on the far-end unit such as the Main Menu, Utilities, Configuration, or Summary screen.

52 CHAPTER 4: TERMINAL INTERFACE

Element ID

Unit Addre ss

LCD Contrast

Set Time

Set Date

New

Password

This field allows identifying the unit using up to 27 alphanumeric characters.

The unit address between 1 and 250.

Sets the LCD display contrast to a value between 0 (high contrast) and 15 (low contrast). If the contrast value makes the screen appear blank (values 11 through

15), reset this value for better viewing.

The time is entered in this field using the 24 - hour HH : MM : SS format. For example, 3:45 a.m. is entered as 03:45:00 and 3:45 p.m. is entered as 15:45:00.

The date is ente red in this field u sing the MM/DD/ Y Y format. For examp le, July 4, 1996 is entered as 07/04/96.

The PRISM 41TDM is Year 2000 date compliant. All date related functions for the

✍

year 2000 and after operate without discrepancies or interruptions.

This field allows entry of a password of up to 10 characters. An empty string (Enter only) disables the password feature. After pressing Enter, the new password activates and no longer appears. Therefore, type carefully when entering a new password and verify befo re press ing Enter. When the terminal interface is exited and later reactivated, this password must be entered exactly to gain access. If the wrong password is entered, the software prompts reentering the password.

Store Parameters

to EEPROM

Maintenance

Reset

Factory

Reset

Do not exit the terminal interface program until the password procedure is fully understood. If a password has been specified, type it exactly to reenter the program.

If a password is programmed and forgotten, contact Verilink Technical support for a one-time backdoor password.

This command causes the unit to store all user-selectable parameters into non-volatile memory. These settings then become the saved configuration which can be loaded at power-up.

This command causes the unit to restart and interrupt network traffic. As a safety precaution, the system re-prompts to execute this command.

This field clears all user-selectable parameters, performance registers, passwords, and alarms but saves the IP Address. All alarm threshold parameters are set to default values. These settings are then written to non-volatile memory as the saved configuration.

This command causes the unit to restart and interrupt network traffic. As a safety precaution, the system re-prompts executing this command.

Clears all user-selectable parameters including the IP Address. To exit this screen without performing the reset function, press the Enter key with No selected. To proceed with the reset function, move the cursor to Yes and press Enter. This operation resets all parameters to the factory default settings and clears all performance registers.

This command causes the unit to restart and interrupt network traffic. As a safety precaution, the system re-prompts to execute this command.

SNMP A

This unit has an embedded SNMP agent which can be accessed either through the built in SLIP interface or the optional Network Interface Card (NIC). The NIC can either be an Ethernet or Token Ring interface. With these interfaces, access can be gained to the PRISM 41TDM through Telnet or SNMP. The Telnet session is simply a connection to the user interface of the unit.

SNMP access to the unit is limited to Management Information Bases (MIBs) supported by the embedded SNMP agent. The SNMP agent supports MIB-II (RFC

1213). This appendix describes in detail how the embedded SNMP agent conforms to the RFC.

GENT

RFC 1213

systemTable sysDescr: (read-only)

This RFC defines the MIB-II specification.

This entry is a textual description of the entity. It should include the full name and version ident ification of the sys tem's hard ware type, soft ware operati ng-system, and networking software. It is mandatory that this only contain printable ASCII characters. For the PRISM 41TDM, this value returns the string TxPORT SNMP Agent.

sysObjectID: (read-only)

The vendor's authoritative identification of the network management subsystem contained in the entity. This value is allocated within the enterprises subtree (1.3.6.1.4.1) and provides an easy and unambiguous means for determining ‘what kind of box' is being managed. For example, if vendor ‘Flintstones, Inc.' was assigned the subtree 1.3.6.1.4.1.4242, it could assign the identifier

1.3.6.1.4.1.4242.1.1 to its ‘Fred Router'. For the PRISM 41TDM, this value returns the Object Identifier of 1.3.6.1.4.1.254.1.1.

sysUpTime: (read-only)

The time (in hundredths of a second) since the network management portion of the system was last re-initialized.

sysContact: (read-write)

The textual identification of the contact person for this managed node, together with information on how to contact this person. The string defaults to ‘no system contact.’

54 APPENDIX A: SNMP AGENT

sysName: (read-write)

An administratively-assigned name for this managed node. By convention, this is the node's fully-qualified domain name. The default is ‘no system name’.

sysLocation: (read-write)

The physical location of this node (e.g.,‘telephone closet, 3rd floor'). The default is ‘no system location’.

sysServices: (read-only)

A value which indicates the set of services that this entity primarily offers. The value is a sum. This sum initially takes the value zero. Then, for each layer, L, in the range 1 through 7, that this node performs transactions for, 2 raised to (L - 1) is added to the sum. For example, a node which performs primarily routing functions would have a value of 4 (2 offering application services would have a value of 72 (2 the context of the Internet suite of protocols, values should be calculated accordingly:

1 physical (e.g.,repeaters)

(3-1)

). In contrast, a node which is a host

(4-1)

+ 2

(7-1)

). Note that in

2 datalink/subnetwork (e.g., bridges) 3 internet (e.g., IP gateways) 4 end-to-end (e.g., IP hosts) 7 applications (e.g., mail relays) For systems including OSI protocols, layers 5 and 6 may also be counted. The

PRISM 41TD M returns a value of 72 representing a host offering application services.

ifTable ifNumber: (read-only)

The number of network interfaces (regardless of their current state) present on this system. There are always a minimum of 3 (SLIP, Network - DDS, and Port 1). The optional in terface is an NIC (Ethernet or Token Ring) card.

ifIndex: (read-only)

A unique value for each interface. Its value ranges between 1 and the value of ifNumber. The value for each inte rface must remain c onstant at leas t from one re-initiali zation of the enti ty's network man agement syste m to the next re-initialization.

With NIC Without NIC

- SLIP

- NIC

- DDS

- DTE A Port

- DTE B Port (TDM (only)

- SLIP

- DDS

- DTE A Port

- DTE B Port (TDM only)

RFC 1213

ifDescr: (read-only)

A textual string containing information about the interface. This string should include the name of the manufacturer, the product name and the version of the hardware interface.

SLIP Interf ace Ethernet NIC Token Ring NIC DDS Network Interface DDS DTE RS-232/V.35 Port

- Returned for the SLIP Interface

- Returned for the NIC, for Ethern et interface

- Returned for the NIC, for Token Ring

- Returned for the DDS interface

- Returned for D TE Port

ifType: (read-only)

The type of interface, distinguished according to the physical/link protocol(s) immediately ‘below' the network layer in the protocol stack.

other(1)

- none of the following

regular1822(2) hdh1822(3) ddn-x25(4) rfc877-x25(5) ethernet-cs macd(6) iso88023-csmacd(7) iso88024-tokenBus(8)

Ethernet NIC

iso88025-tokenRing(9) iso88026-man(10) starLan(11) proteon-10Mbit(12) proteon-80Mbit(13) hyperchannel(14) fddi(15) lapb(16) sdlc(17) ds1(18) e1(19)

- european equiv. of T-1

basicISDN(20) primaryISDN(21)

- proprietary serial

propPointToPointSerial(22) ppp(23) softwareLoopback(24)

Token Ring NIC

Port 1

56 APPENDIX A: SNMP AGENT

eon(25)

- CLNP over IP [11]

ethernet-3Mbit(26) nsip(27) slip(28) ultra(29) ds3(30) sip(31) frame-relay(32)

- XNS over IP

- generic SLIP

- ULTRA technologies

- T-3

- SMDS

ifMtu: (read-only)

The size of the largest datagram which can be sent/received on the interface, specified in octets. For interfaces that are used for transmitting network datagrams, this is the size of the largest network datagram that can be sent on the interface.

296

- returned for th e SLIP Interface

1500

- returned for the N IC interfac e (if Eth ernet)

2000

- returned for the N IC interfac e (if Token Ring)

- returned for the DDS and Port 1 interfaces

ifSpeed: (read-only)

An estimat e of the i nterface's c urrent ba ndwidth in bits per second. For interfaces which do not vary in bandwidth or for those where no accurate estimation can be made, this object should contain the nominal bandwidth.

9600

- returned fo r the SLIP Inter face at 9600 bau d

19200

- returned for the SLIP Interface at 19200 baud

38400

- returned for the SLIP Interface at 38400 baud

56000

- returned for the SLIP Interface at 56000 baud

10000000 4000000 16000000

- returned for th e NIC (if Ethern et)

- returned for th e NIC (if Token Ring at 4 Mbps)

- returned fo r the NIC (if Token Ring at 16 Mbps)

ifPhysAddress: (read-only)

The interface's address at the protocol layer immediately ‘below' the network layer in the protocol stack. For interfaces which do not have such an address (e.g., a serial line), this object should contain an octet string of zero length. One exception is the NIC interface which returns the physical address of the unit.

ifAdminStatus: (read-write)

The desired state of the interface. The testing(3) state indicates that no operational packets can be passed. For the PRISM 41TDM, you do not have write permission.

up(1)

- Ready to pass packets

DDS

down(2) testing(3)

- In test mode

ifOperStatus: (read-only)

The current operational state of the interface. The testing(3) state indicates that no operational packets can be passed.

up(1)

- Ready to pass p ackets. This value is re turned if the inte rface is active,

and does not have a testing status.

down(2) testing(3)

- Returned if the interface is not enabled

- In test mode. Th is value is returned fo r the DDS and DTE

interfaces if the interface has a test loop or BERT active.

IfLastChange: (read-only)

The value of sysUpTime at the time the interface entered its current operational state. If the current state was entered prior to the last re-initialization of the local network management subsystem, then this object contains a zero value. The PRISM 41TDM returns the time in hundredths of a second since the interface was changed or reset.

The TxPORT enterprise DDS MIB contains the following objects that allow unit management from any SNMP manager.

DDS Network

Objects

ddsNetRate: (read-write)

This object al lows you to verify or set the identifier of the cu rrent DDS network rate. Only t he ddsNetRate56000 and ddsNetRate64000 apply to the PRI SM 41TDM. Both ra tes are contro lled by the ddsNetMode setting and cannot be changed i ndepende ntly.

ddsNetRate2400 ddsNetRate4800 ddsNetRate9600 ddsNetRate19200 ddsNetRate38400 ddsNetRate56000 ddsNetRate64000

- 2400bps

- 4800bps

- 9600bps

- 19200bps

- 38400bps

- 56000bps

- 64000bps

ddsNetMode: (read-write)

This variable describes the mode in which data is being sent from the DDS unit back towards the network. Changing the value of this variable can cause a loss of remote communi cations.

ddsNetModeNormal(1)

- normal data mode of operation.

58 APPENDIX A: SNMP AGENT

ddsNetModeP roprietary(2 )

- Data being sent out on the DDS network is in a proprietary mode to allow for remote communications, rate adaption, SYNC to ASYNC modes, and/or TDM modes.

ddsNetMode64KClearChannel(3)

- A special case of DDS-II, where the line

rate is 72K, the data rate is 64K, and there is no secondary channel.

ddsNetMode6 4KCCProprie tary(4)

- A special case of DDS-II, where the line rate is 64K, and there is no secondary channel. In addition, the data being sent out on the DDS network is in a proprietary mode to allow for remote communications, rate adaption, sync to async, and/or TDM modes.

ddsNetSendCode: (read-write)

This variable describes what type of test code is being sent from the DDS unit back towards the network.

ddsNetSendNoCode(1) ddsNetSendOtherTestPattern(2) ddsNetSend511Pattern(3)

- Normal data mode of operation

- Sending some other stress pattern than 511

- Sending 511 stress pattern toward the network

ddsNetLoopConfig: (read-write)

This variable allows you to set or view the current loop state of the DDS network interface.

ddsNetNoLo op(1) ddsNetLocalLoop(2)

- Normal data mode of operation

- Data is loop ed back toward the D DS network swit ch

activated loop

ddsNetLineLoop(3)

- Data is looped back toward the DDS network sealing

current activated loop

ddsNetOthe rLoop(4) ddsNetFarEndLineLoop(5)

- Other loop than listed above is active

- Far end unit cur rently has a line loop active

ddsNetStatus: (read-only)

Reports current operational status of the network interface

ddsNetNoAl arm(1) ddsNetLOS(2) ddsNetOOS(3) ddsNetOOF(4)

- DDS network inte rface has no curr ent alarms

- DDS network interface has Loss Of Signal

- DDS network interface is receiving Out Of Service codes

- DDS network interface has Out Of Frame condition

ddsNetTimingSource: (read -write)

Allows you to select or verify the current timing source for the DDS network interface. For the 41TDM in DDS-I or TXP-I mode, only ddsNetTimingNet and ddsNetTimingInt apply. In DDS-II or TXP-II mode, only ddsNetTimingNet applies.

ddsNetTiming Net(1)

interface timing

- Unit dependent upon network for DDS network

DDS

ddsNetTimingInt(2) ddsNetTimingDTE(3)

- Unit supplying timing for DDS network interface

- Unit dependent upon DTE device for network

interface timing

ddsNetRemComm: (read -only)

Reports status of the remote communications link

ddsNetRemCommEnabled(1)

- Remote communications can be carried out

end to end

ddsNetRemCommDisabled(2) ddsNetRem CommNotAvailable(3)

- Remote comm unications are not allowed

- This unit does not support remote

communications

ddsNetCircuitAssur: (read -write)

Allows you to enable or check setting of the circuit assurance option. Circuit Assurance does not apply to the DDS-II operating mode.

ddsNetCircuit AssurEna bled(1)

- Circuit Assurance is enabled and the

integrity of the DDS loop will be maintained

ddsNetCircuit AssurDis abled(2)

- Circuit Assura nce is disable d

ddsNetCircuit AssurNotAvailable(3)

Assurance

ddsNetAntiStrTimer: (read-write)

This variable describes the current setting for the anti streaming timer.

ddsNetAntiStrTimerOff(1) ddsNetAnt iStrTimer10 (2) ddsNetAnt iStrTimer 30(3) ddsNetAnt iStrTimer 60(4)

ddsNetLoopMode: (read-write)

Allows you to review or set Loop Mode to unidirectional or bidirectional

ddsNetLoopModeUnidirectional(1)

unidirectional Local loop will be bidirectional

ddsNetLoo pModeBidi rectional(2 )

DDS DTE Objects ddsDteRate: (read-write)

Allows you to verify or select the DDS DTE data rate. The available rates depend upon the ddsNetMode, ddsDteMode, and ddsDteFormat settings.

- This unit does not support Circuit

- AntiStreaming Timer is off AntiStreaming Timer is set to 10 seconds

AntiStreaming Timer is set to 30 seconds

AntiStreaming Timer is set to 60 seconds

- Line, Data, and V54 loops will be

- All loops will be bidirectional

ddsDteRate2400 ddsDteRate4800 ddsDteRate9600

- 2400bps

- 4800bps

- 9600bps

60 APPENDIX A: SNMP AGENT

ddsDteRate19200 ddsDteRate38400 ddsDteRate52000 ddsDteRate54000 ddsDteRate56000 ddsDteRate57600 ddsDteRate60000 ddsDteRate62000 ddsDteRate64000

- 19200bps

- 38400bps

- 52000bps

- 54000bps

- 56000bps

- 57600bps

- 60000bps

- 62000bps

- 64000bps

ddsDteFormat (read-write)

This variable describes the current operations format of the DTE interface. Only the ddsDteFormatSync applies if ddsNetMode is DDS-I or DDS-II.

ddsDteFormatSync(1)

- DTE in terface is c urrently s et to ope rate in

Synchronous clocking format

ddsDteFormatAsync(2)

- DTE interface is currently set to operate in the

Asynchronous clocking format

ddsDteFormatNotAvail(3)

- DTE interface operating format is not available

ddsDteParity: (read -write)

Allows you to verify or select parity for the DTE interface. This variable is only valid when the DTE Mode is set to ASYNC. For the PRISM 41TDM, the value always returns ddsDteParityNotAvail. This value cannot be modified.

ddsDteParityNone(1)

- DTE interface is currently set for no parity bit

checking or generation

ddsDteParityOdd(2) ddsDteParit yEven(3) ddsDteParityMark(4) ddsDteParitySpace(5) ddsDteParityNotAvail(6)

- DTE interface is currently set for odd parity

- DTE interface is cu rrently set fo r even parity

- DTE interface is currently set fo r mark parity

- DTE interface is currently set fo r space parity

- Parity setting on the DTE interface is not available.

ddsDteStopBit: (read-write)

Allows you to verify or set the stop bit setting for the DTE interface. This variable is only valid when the DTE interface is set to ASYNC. For the PRISM 41TDM, the value always returns ddsDteStopBitNotAvail. This value cannot be modified.

ddsDteStopBit1(1)

- DTE interface is configured to operate in the ASYNC

mode with 1 stop bit

ddsDteStopBit2(2)

- DTE interface is configured to operate in the ASYNC

mode with 2 stop bits

DDS

ddsDteStopBitNotAvail(3)

- Stop bit information is not available. The DTE

interface is probably configured for synchronous operation.

ddsDteSendCode: (read-write)

Allows you to start or verify the setting of the DTE BERT. This variable describes what type of test code is being sent from the DDS unit back towards the DTE.

ddsDteSendNoCode(1) ddsDteSendOtherPattern(2) ddsDteSend511Pattern(3)

- Normal data mode of operation

- Sending some other stress pattern than 511

- Sending 511 stress pattern toward the DTE

ddsDteLoopConfig: (read-write)

Allows you to set a DTE loop or verify the status of a DTE loop

ddsDteNoLoop(1) ddsDteV54Loop(2)

- Normal data mode of operation

- Data is looped back toward the DDS network and toward

the DTE loop activated via V.54 loop codes

ddsDteDat aLoop( 3)

- Data is looped back toward the DTE loop activated via

data loop code received from the network

ddsDteOthe rLoop(4)

- DTE interface has some loop other than one of the

above listed loops active

ddsDteFarEndV54Loop(5)

- The far end unit has a V.54 loop current on it's

DTE interface

ddsDteStatus: (read-only)

Reports the current operations status of the DTE interface

ddsDteNoAl arm(1) ddsDteDtrAlarm(2)

- DTE interface has no current alarms

- DTE interface has currently declared a loss of DTR

alarm

ddsDteInterfaceType: (read-only)

Reports the DTE interface type being used

ddsDteInterfaceV35(1) ddsDteInterface232(2) ddsDteInterfaceOther(3) ddsDteInterfaceNotAvail(4) ddsDteInterface530(5)

- DTE interface is a V.35

- DTE interface is a RS232

- DTE interface is something other than listed above

- DTE interface typ e is not available

- DTE in terface is a n EIA-530

ddsDteV54Loop: (read-write)

Allows you to select or verify the operational state of the V.54 option

ddsDteV54LoopEnabled(1)

- The unit will currently respond to V.54 loop

codes

62 APPENDIX A: SNMP AGENT

ddsDteV54LoopDisabled(2)

- The unit will not respond to V.54 loop codes

ddsDteRtsCtsDelay: (read -write)

Allows you to verify or select the delay used in the transition time on RTS and CTS. For the PRISM 41TDM, only the ddsDteRtsCtsDelayNormal and ddsDteRtsCtsDelayLong option are valid.

ddsDteRtsC tsDelayOff (1) ddsDteRtsCtsDelayNormal(2)

- Delay is turned off

- Delay is a normal amount based on the data

rate and the h ardware

ddsDteRtsCtsDelayLong(3)

- Delay is generally doubled from the normal

delay

ddsDteRtsCTSDelayUserDefined(30)

- Delay has been user defined to some

other value, when thi s value is set the dela y is set to 30ms

ddsDteRtsStatus: (read-only)

Reports the current status of the RTS control lead

ddsDteRtsStatusHigh(1) ddsDteRtsStatusLow(2)

- RTS control lead is in the active HIGH s tate

- RTS control lead is in the active LOW state

ddsDteCtsStatus: (read-only)

Reports the current stat us of the CTS con trol lead

ddsDteCtsStatusHigh(1) ddsDteCtsStatusLow(2)

- CTS control lead is in the active HIGH state

- CTS control lea d is in the active LOW state

ddsDteDcdStatus: (read-only)

Reports the current status of the DCD control lead

ddsDteDcdStatusHigh(1) ddsDteDcdStatusLow(2)

- DCD control lead is in the active HIGH state

- DCD control lead is in the active LOW state

ddsDteDtrStatus: (read-only)

Reports the current status of the DTR control lead

ddsDteDtrStatusHigh(1) ddsDteDtrStatusLow(2)

- DTR control lead is in the active HIGH state

- DTR control lead is in the active LOW state

ddsDteDsrStatus: (read- only)

Reports the current status of the DSR control lead

ddsDteDsrStatusHigh(1) ddsDteDsrStatusLow(2)

- DSR control lead is in the active HIGH state

- DSR control lead is in the active LOW state

ddsDteDsrControl: (read-write)

Allows you to review and configure the DTE DSR lead (Circuit 107/CC)

TxPORT

ddsDteDsrControlTestOff(1) ddsDteDsrControlForcedOn(2)

- DSR is on except when the unit is in test

- DSR is on regardless of any unit condition

ddsDteDcdControl: (read-write)

Allows you to review and configure the DTE DCD lead (Circuit 109/CF).

ddsDteDcdControlIdleOff(1)

- DCD is on except when the unit is receiving

Idle Code from the network.

ddsDteDcdControlForcedOn(2)

- DCD is on regardless of any unit condition

ddsDteRtsControl: (read-write)

Allows you to review or configure the DTE RTS and CTS leads (Circuit 105/CA and 106/CB).

ddsDteRtsC ontrolNormal( 1)

- RTS, Circuit Assurance, and Antistreaming

control CTS

ddsDteRtsControlForcedOn(2)

- RTS is ignored, CTS is on regar dless of any

unit condition

ddsDteDtrAlarm: (read-write)

Allows you to enable or disable monitoring on the DTR lead (Circuit 108/CD).

TxPORT

ddsDteDtrAlarmEnabled(1) ddsDteDtrAlarmDisabled(2)

- DTR low is an alarm condition

- DTR is ignored

ddsDteRLDetect: (read-write)

Allows you to override the DTE RL input pin on the Remote Loopback lead (Circuit 140/RLB)

ddsDteRLDetectEnabled(1) ddsDteRLDetectDisabled(2)

- RLB high activates the Remote V.54 Loop

- RLB is ignored

ddsDteLLDetect: (read-write)

Allows you to override the DTE LL input pin on the Local Loopback lead (Circuit 141/LLB).

ddsDteLLDetectEnabled(1) ddsDteLLDetectDisabled(2)

- LLB high activates the Local Loop

- LLB is ignored

The TxPORT enterprise proprietary MIB contains objects that allow unit management from any SNMP manager. Far End parameters can only be retrieved when the unit is configured for proprietary mode of operation on both ends of the network.

companyName (read-only)

Displays the company name (TxPORT, Inc.).

64 APPENDIX A: SNMP AGENT

companyStatement (read-only)

Displays the TxPORT vision statement.

companyStreetAddr (read-only)

Displays the TxPORT headquarters street address (127 Jetplex Circle).

companyCityState (read-only)

Displays the TxPORT headquarters location (Madison, AL 35758).

companyTechService (read-only)

Displays the TxPORT Technical Support telephone number (1-800-285-2755).

companyInHouseSales (read-only)

Displays the TxPORT Sales telephone number (1-800-926-0085).

companyEmailAddr (read-only)

Displays the E-mail address to obtain information concerning TxPORT and its products (info@txport.com).

productModelNumber (read-only)

Displays the product model number for the device currently being queried (Model 41TDM).

productModelDescr (read-only)

Displays a brief description of the product (DDS CSU/DSU).

productElementId (read-only)

Displays the element ID of the unit.

productSoftwareRev (read-only)

Displays th e curren t unit s oftware r evision.

productHardwareRev (read-only)

Displays the current unit hardware revisio n.

productSerialNum (read-only)

Displays the unit’s serial number.

productPhysicalAddress (read-only)

Displays the unit’s physical ethernet or token ring address.

productNmsAddress (read-only)

Displays the unit’s NMS address.

optionCardDesc (read-only)

Displays a brief description of the option card.

optionCardSoftwareRev (read-only)

Displays the software revision of the option card.

optionCardHardwareRev (read-only)

Displays the hardware revisio n of the option c ard.

optionCardPhysicalAddress (read-only)

Displays the physical address tied to the option card.

TxPORT

66 APPENDIX A: SNMP AGENT

USTOMER

Verilink provides easy access to customer support information through a variety of services. This section describes these services.

The product referenced by this document was originally developed and sold by TxPORT®, Inc. In 1998, TxPORT was acquired by Verilink® Corporation, an industry-leading supplier of WAN access products for telecommunications network servic e providers and corporate e nterprises. As a Verilink customer, you will continue to receive the highest quality technical sup port and customer service available. While this product is now proudly associated with Verilink, please note that the TxPORT name may continue to be used to identify pre-existing proprietary properties.

ERVICE

Support from Your Network Supplier

Support from Verilink

Telephone

If assistance is required, contact your network supplier. Many suppliers are authorized Verilink service partners who are qualified to provide a variety of services, including network planning, installation, hardware maintenance, application training, and support services. When you contact your network supplier for assistance, have the following information ready:

Diagnostic error messages

✦

A list of system hardware and software, including revision levels

✦

Details about recent configuration changes, if applicable

✦

If you are unable to receive support from your network supplier or want to contact us directly, Verilink offers worldwide customer support 24 hours a day, 7 days a week by telephone, e-mail, and through Verilink’s Internet web site.

To speak directly with a Verilink customer service representative, you may dial one of the following numbers:

Sales and Marketing: 800-VERILINK (837-4546)

✦

Technical Support

✦

toll-free: 800 -285 - 2 755 local: (256) 772 - 3770

E-mail

Internet

You can request sales and marketing information or pose a technical support question about your Verilink product with direct e-mail access by contacting:

Sales and Marketing: info@verilink.com

✦

Technical Support: support@verilink.com

✦

Access the l atest networki ng informa tion on Verilink’s Internet web sit e by entering our URL into your Internet browser:

68 APPENDIX B: CUSTOMER SERVICE

http://www.verilink.com/

This service features information about Verilink products, customer service, technical support, latest news releases, and more.

Ordering Information

Optional Equipment

Each PRISM 41TDM unit is supplied with a reference manual and is equipped with data ports. Also provided is an 8-pin modular to 8-pin modular (four twisted pairs) network cable (9- 1001 -004-010). Table 2-1 displays the unit ordering numbers and options.

Ta b l e 2 - 1

Part Number Description

F-4103-001--11100 F-4103-001--11101

Unit Ordering Numbers

41TDM, 115 V 41TDM, 115 V, ISDN

You may also require optional equipment for the installation and operation of the unit. Table 2-2 lists the available options for the PRISM 41TDM.

Ta b l e 2 - 2

9-1001-070-xxx 9-1544-619-xxx 9-1001-004-xxx

Option Equipment for the PRISM 41TDM

Network Cables

DDS cross-over kit Network LAN interface

EIA-530 Cables

9-1001-511-xxx 9-1001-511N-xxx 9-1001-512-xxx 9-1001-512N-xxx

9-1001-110-xxx 8-pin to 6-pin DBU to ISDN interface

9-1001-052-xxx 9-1001-053-xxx 9-1001-086-xxx

DB-25 to DB-25 male to male, straight through DB-25 to DB-25 male to male, null modem DB-25 to DB-25 male to female, straight through DB-25 to DB-25 male to female, null modem

Dial Back-Up Cables

V.35 Cables

DB-25 to Winchester 34-pin male to male, straight through DB-25 to Winchester 34-pin male to female, straight through DB-25 to Winchester 34-pin male to male, null modem

RS-232 Cables

Returning Products

Ta b l e 2 - 2

9-1001-211-xxx 9-1001-212-xxx 9-1001-044-xxx

*xxx denotes the cable length (in feet).

9-1001-072-1 9-1001-073-2 9-1001-091-1 9-1001-091-2

9-1001-015-1 9-1001-015-2 9-1001-016-1 9-1001-016-2

Option Equipment for the PRISM 41TDM

DB-25 to DB-25 male to male, straight through DB-25 to DB-25 male to female, straight through DB-25 to DB-25 male to male, null modem

8-pin RJ-48 to IBM Type 1(Token Ring ) DB-9 female to 8-pin RJ-48 (PC to SUPV) 8-pin RJ-48 to DB-25 m ale (modem to SUP V) 8-pin RJ-48 to DB-25 fe male (modem to SUPV)

DB-25 male to 8-pin (modem to SUPV) DB-25 female to 8-pin (modem to SUPV) DB-25 male to 8-pin (terminal to SUPV) DB-25 female to 8-pin (termi nal to SUPV)

Cable Kits

Adapters

MIBs

Returning Products

9-1000-1000-1 9-1000-4000-1

9-3100-002-1 9-3100-002-2

TxPORT MIB DDS MIB

Rack Mount Kits

19-inch 23-inch

If for any reason y ou must return you r Verilink product, it m ust be returned to the factory, shipping prepaid and packaged to the best commercial standard for electronic equipment. Verilink will pay shipping charges for delivery on return. You are responsible for mode and cost of shipment to Verilink.

You must have a Return Material Authorization (RMA) number marked on the shipping package. Products sent to Verilink without RMA numbers will be returned to the sender unopened, at the sender’s expense. A product sent directly to Verilink for repair must first be assig ned a Return Mater ials Authorizatio n (RMA) number.

You may obtain an RMA number by calling Customer Service at 800-VERILINK, extension 2282. When calling Verilink for an RMA, please have the following information available:

Model number and serial number for each unit

✦

Reason for return and symptoms of problem

✦

Warranty statu s (if known)

✦

70 APPENDIX B: CUSTOMER SERVICE

Purchase order number to cover charges for out - of -warranty items

✦

Name and phone number of person we can contact if we have questions about the

✦

unit(s) Mode of shipment required (second-day air is the normal mode of shipment for all

✦

returned material unless otherwise specified) Units being returned to Verilink should be sent to the following address:

Verilink Corporation 127 Jetplex Circle Madison, Alabama 35758

NDEX

Symbols

% EFS

Acknowledgment Activate Remote Access ALARM Alarm Configuration Alarm Reset Timer Alarm Thresholds Alarms Anti - Streaming Timer Antistream ing Timer ART

BERT

25, 35

BERT Function Bit Errors

26, 35

Canadian Emissions Requirements Circuit Assurance Clear Alarms Clear Tests COA Connection (SUPV) Compressed SLIP Configuration Contrast Copyright CTS/RTS Control Cursor Customer Service

16, 30

18, 38

20, 41

Data Loop Data Mode Date / Time DCD Control DDS DDS DTE Objects

20, 40

DDS Mode DDS Network Objects DDS Network Parameters DDS-I DDS-II Device Type and Revision Diagnostics Dial Connection Direct Connection Disconnection String Documentation Disclaimer DSR DSR Control DTE Alarms DTE Port Parameters DTE Status DTR Alarm

17, 38

49, 50

20, 40

18, 39

21, 41

Elapsed Time Element Element ID E-mail

Errored Seconds Ethernet Exit

31, 33, 37, 39, 42, 45, 47, 48

30, 51, 52

26, 35

Factory Reset Far Loops Far V.54 Loop FCC Requirements Features Field Types Filter IP Ad dress Format Front Panel Buttons Front Panel Interface Front Panel LEDs

iii

24, 46

19, 40

General

ifTable Initialization String Interface Interface Access Interface Conventions IP Port

49, 50

LAN

LAN Connection Line Loop LL Enable Local Loop Loop

Loop Mode LOS

Loss of Signal Seconds

21, 41

26, 35 25, 34

Maintenance Maintenance Reset Management Ports Menu Element Menu Title Messages Mode

19, 39

16, 30

Near Loops NET

NET / DTE Status NET Alarms Network Network Configuration Network Management New Password

OOF

OOS

Optional Equipment Ordering Information Out of Frame Seconds Out of Service Seconds

8, 68

16, 29

32, 42

Pattern Sync Port A Port B Port Connections POWER Power Connection Primary Dial String PRISM I P Address

14, 19, 40

49, 50

Rate

17, 20, 38, 40

Read Community Reset Alarm Registers Reset Errors Reset LAN Reset LAN Interface Returning Products returning products for repair RFC 1213 RL Enable Router IP Address RTS/CTS Delay

21, 41

24, 47

24, 46

21, 41

Save Configuration Scroll

Secondary Dial Strin Select

Set Date Set Time SLIP SLIP Connection SLIP Port Rate SLIP Rate SNMP Agent SNMP Configuration SNMP Set SNMP Sets Specifications

Start Test Status Store Parameters to EEPROM Subnet Mask Summary Supplied Materials Support from TxPORT

Network Interface

49, 50

23, 46

24, 46

Support from Your Network Supplier SUPV

Sync

System Contact System Location System Name systemTable

24, 47

24, 48

24, 47

TCP/IP Configuration technical support

product repair iv Telephone Terminal Interface TEST Test Length Time Timing Token Rate Token Ring Trademarks TRAP IP Address

26, 27

17, 38

11 ii

Trap IP Address TXP-I

17, 38

TXP-II TxPORT Type

17, 38

Unit Address Unit Components Unit I P Address Unloop Unpacking and Inspection Utilities

27, 51

V.54 Loop

21, 26, 34, 41

Write Community

24, 47

Verilink PRISM 41TDM User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

What is a reference guide

Where do I go for information

Conventions

Introduction

Features

Specifications

Standard mode

Proprietary, non-TDM mode

Proprietary, TDM mode

Standard Mode

Proprietary, Non-TDM Mode

Proprietary, TDM Mode

Diagnostics

Dial Backup

Pow er

Mechanical

Environmental

Compatibility

Ordering Information

Optional Equipment

Unpacking and Inspection

Supplied Materials

Front Panel Indicators

BACKUP

POWER

Front Panel Buttons

TEST

ALARM

Port Connections

Exit

Scroll

Select

Token Ring

SLIP

Direct Connection

Dial Connection

SUPV

Por t A

Power Connection

Por t B

Interface Conventions

Menu Title

Menu Element

Information Element

Cursor

Network Configuration

DDS Mode

DDS-I

DDS-II

Rate

Timing

TXP-I

TXP-II

Circuit Assurance

Alarm Thresholds

Mode

Format

Rate

Interface

RTS/CTS Delay

DTR Alarm

LL Detect

RL Detect

DBU Configuration

DBU Command

DBU Activator

DBU Mode

DBU Activation Periods

SNMP Configuration

DBU Password

DBU Dial String

DBU Init String

DBU Disconnect String

Router IP Address

Subnet Mask

Filter IP Address