ADTRAN ISU 512 User Manual
ISU 512
61202.086L1-1B
September 1997
ISDN Service Unit
USER MANUAL
Part Number
ISU 512 (U Interface) 1202086L1
ISU 512 ST (ST Interface) 1202086L2
RS-530 to V.35 Adapter 1200072L1
RS-366 Y Cable 1200120L1
RJ-45 to DB-25 Adapter 3196.ADPT003
Trademark:
5ESS is a registered trademark of AT&T
DMS-100 is a trademark of Northern Telecom, Inc.
ISU is a trademark of ADTRAN, Inc.
901 Explorer Boulevard
P.O. Box 140000
Huntsville, AL 35814-4000
Phone: (205) 963-8000
© 1997 ADTRAN, Inc.
All rights reserved.
Printed in USA.
FCC regulations require that the following information be provided in this manual:
1. This equipment complies with Part 68 of the FCC rules. On the bottom of the equipment housing is a label that shows the FCC registration number and Ringer Equivalence Number (REN) for this equipment. If requested, provide this information to
the telephone company.
2. If this equipment causes harm to the telephone network, the telephone company
may temporarily discontinue service. If possible, advance notification is given, otherwise, notification is given as soon as possible. The telephone company will advise
the customer of the right to file a complaint with the FCC.
3. The telephone company may make changes in its facilities, equipment, operations,
or procedures that could affect the proper operation of this equipment; advance notification and the opportunity to maintain uninterrupted service is given.
4. If experiencing difficulty with this equipment, please contact ADTRAN for repair
and warranty information. The telephone company may require this equipment to
be disconnected from the network until the problem is corrected, or it is certain the
equipment is not malfunctioning.
5. This unit contains no user serviceable parts.
6. An FCC compliant telephone cord with a modular plug is provided with this equipment. In addition, an FCC compliant cable appropriate for the dial backup option
ordered is provided with this equipment. This equipment is designed to be connected to the telephone network or premises wiring using an FCC compatible modular
jack, which is Part 68 compliant.
7. The following information may be required when applying to the local telephone
company for leased line facilities.
Service Type Digital Facility
Interface Code
ISDN 021S5 6.0F RJ-49C
Service Order Code Network Jacks
FEDERAL COMMUNICATIONS COMMISSION
RADIO FREQUENCY INTERFERENCE STATEMENT
1202086L1
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential environment. This equipment generates, uses,
and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio or TV reception, which can be determined
by turning the equipment off and on. The user is encouraged to try to correct the interference
by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Change or modifications to this unit not expressly approved by the party responsible
for compliance could void the user's authority to operate the equipment.
1202086L2
This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential environment. This equipment generates, uses,
and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio or TV reception, which can be determined
by turning the equipment off and on. The user is encouraged to try to correct the interference
by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Change or modifications to this unit not expressly approved by the party responsible
for compliance could void the user's authority to operate the equipment.
CANADIAN EMISSIONS REQUIREMENTS
1202086L1
This digital apparatus does not exceed the Class B limits for radio noise emissions from
digital apparatus as set out in the interference-causing equipment standard entitled
"Digital Apparatus," ICES-003 of the Department of Communications.
Cet appareil nuerique respecte les limites de bruits radioelectriques applicables aux
appareils numeriques de Class B prescrites dans la norme sur le materiel brouilleur:
"Appareils Numeriques," NMB-003 edictee par le ministre des Communications.
1202086L2
This digital apparatus does not exceed the Class A limits for radio noise emissions
from digital apparatus as set out in the interference-causing equipment standard entitled "Digital Apparatus," ICES-003 of the Department of Communications.
Cet appareil nuerique respecte les limites de bruits radioelectriques applicables aux
appareils numeriques de Class A prescrites dans la norme sur le materiel brouilleur:
"Appareils Numeriques," NMB-003 edictee par le ministre des Communications.
CANADIAN EQUIPMENT LIMITATIONS
Notice: The Canadian Industry and Science Canada label identifies certified equipment. This certification means that the equipment meets certain telecommunications
network protective, operational, and safety requirements. The Department does not
guarantee the equipment will operate to the user’s satisfaction.
Before installing this equipment, ensure that it is permissible to be connected to the facilities of the local telecommunications company. The equipment must also be installed using an acceptable method of connection. In some cases, the company’s inside
wiring associated with a single-line individual service may be extended by means of a
certified connector assembly (telephone extension cord). Compliance with the above
conditions may not prevent degradation of service in some situations.
Repairs to certified equipment should be made by an authorized Canadian maintenance facility designated by the supplier. Any repairs or alterations made by the user
to this equipment, or equipment malfunctions, may give the telecommunications company cause to request the user to disconnect the equipment.
Users should ensure for their own protection that the electrical ground connections of
the power utility, telephone lines, and internal metallic water pipe system, if present,
are connected together. This precaution may be particularly important in rural areas.
Users should not attempt to make such connections themselves, but should contact the
appropriate electric inspection authority, or an electrician, as appropriate.
Load Number (LN) assigned to each terminal device denotes the percentage of the
The
total load to be connected to a telephone loop which is used by the device, to prevent
overloading. The termination on a loop may consist of any combination of devices
subject only to the requirement that the total of the Load Numbers of all devices does
not exceed 100.
Quick Start Guide
Before configuring the ISU
TM
512, the telephone service provider must supply
the switch type, service profile identifier (SPID), and local directory number
(LDN). For example, for one ISDN BRI 2B+D line:
Switch Type National ISDN-1
SPID1 20455512120100
SPID2 20455512130100
LDN1 5551212
LDN2 5551213
To configure the ISU 512 from the front panel press
tus screen and continue entering the appropriate numbers until the Switch
type, SPIDs and LDNs have been entered. (Note: Outside the U.S. and Canada,
you will not need to enter SPIDs.)
1=Netw. options 1=Dial Line
3=CONFIG 2=DTE options 2=Leased Line
3=BONDING setup 4=Dial options 1=Set SPID
4=Quick setup 5=Auto answer 2=Set LDN
Enter from the initial sta-
1=AT&T 5ESS
2=DMS-100
1=Switch type
2=Call type 4=NEC
3=Terminal ID
6=Connect Timout
7=Call Screening
8=Passwords
9=Maint Setup
3=NATIONAL ISDN1
5=EuroISDN
Press Cancel to exit to the status screen and verify Ready conditions for each
BRI line configured. If the status screen reads SYNC , DOWN , TEI , or SPID,
either the configuration of the switch type and SPIDs are incorrect or there
may be a problem with the ISDN line or translations; see the chapter Trouble-
shooting . Outside of the U.S. and Canada, only the LDNs will need to be en-
tered.
Service Profile/
Directory Number
SPID1/LDN1
SPID2/LDN2
SPID3/LDN3
SPID4/LDN4
SPID5/LDN5
SPID6/LDN6
SPID7/LDN7
SPID8/LDN8
Line
Interface
Line 1 128 kbps
Line 2 256 kbps
Line 3 384 kbps
Line 4 512 kbps
Maximum
Bandwidth
To configure the ISU 512 using the VT 100 terminal interface, use the following
procedure:
1. Connect a VT 100 async terminal, or personal computer with a terminal
emulator package, to the Chain In port using an RJ-45 cable and the RJ-45
to DB-25 adapter (part number 3196.ADPT003).
2. Configure the terminal for 9600 bps, 8 data bits, 1 stop bit, no parity
(8/1/n).
3. Type
!V and press Enter .
4. When the terminal displays the Configuration menu, enter the assigned
SPIDs, LDNs, and switch type.
5. Connect the ISDN lines.
Once the Ready condition has been achieved, a call can be placed from the
Configuration menu using the Ctl+D command, a test can be run using Ctl+T ,
or the status of the line can be checked using Ctl+V . The status of the line and
the interface leads can be monitored while a call is active. Ctl+X exits the
VT 100 terminal and returns control to the Maintenance interface.
Table of Contents
Chapter 1. Understanding ISDN and the ISU 512 ..................................................... 1
ISDN Overview .................................................................................................................. 1
Product Overview.............................................................................................................. 1
ISU 512 Interoperability .................................................................................................... 4
Recommended Operating Protocols................................................................................ 5
Chapter 2. Ordering ISDN.............................................................................................. 7
Chapter 3. Installation.................................................................................................... 9
Installation........................................................................................................................... 9
Network Connection.......................................................................................................... 9
DTE Data Connection........................................................................................................ 10
Dial Interface Connection.................................................................................................. 10
Smart Dial String Formats.......................................................................................... 10
The Maintenance Interface................................................................................................ 12
Software Update .......................................................................................................... 13
VT 100 Menu Interface ...................................................................................................... 14
Chapter 4. Operation ....................................................................................................... 19
Initial Self Test .................................................................................................................... 19
Menu Structure................................................................................................................... 20
Main Menu ................................................................................................................... 20
Status Menu .......................................................................................................... 20
Test Menu.............................................................................................................. 20
Configuration (CONFIG) Menu ........................................................................ 21
Dial Menu.............................................................................................................. 21
Basic Menu Traversal.................................................................................................. 21
Front Panel .......................................................................................................................... 22
LCD Window................................................................................................. 23
Enter ................................................................................................................ 23
Numeric Keypad ........................................................................................... 23
Cancel.............................................................................................................. 23
Up and Down Arrows.................................................................................. 23
LED Description ............................................................................................ 23
Chapter 5. Configuration ................................................................................................ 25
Using ISDN Basic Rate Switched Service ....................................................................... 25
Configuring Network Options for Dial Operation ....................................................... 27
Switch Type.................................................................................................................. 27
Call Type....................................................................................................................... 27
Speech.................................................................................................................... 28
Audio..................................................................................................................... 28
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Table of Contents
Data 56 kbps.......................................................................................................... 28
Data 64 kbps.......................................................................................................... 28
Terminal Identification ............................................................................................... 29
Setting the SPID.................................................................................................... 29
Setting the LDN.................................................................................................... 30
Dial Options.................................................................................................................. 30
Front Panel............................................................................................................ 31
RS-366 .................................................................................................................... 31
1 sec or EON................................................................................................... 31
2 sec or EON................................................................................................... 31
5 sec or EON (default)................................................................................... 32
10 sec or EON................................................................................................. 32
20 sec or EON................................................................................................. 32
Wait for EON ................................................................................................. 32
Security ........................................................................................................... 32
V.25 bis................................................................................................................... 32
Auto Answer ................................................................................................................ 33
Disabled................................................................................................................. 33
Enabled.................................................................................................................. 33
Dump all calls....................................................................................................... 33
Connect Timeout.......................................................................................................... 34
Call Screening............................................................................................................... 34
Remote Access.............................................................................................................. 35
Remote Download (RDL) ................................................................................... 35
Remote Supervision............................................................................................. 36
Maintenance Setup ...................................................................................................... 37
Auto Traps...................................................................................................... 37
ADLP Address............................................................................................... 37
Port Mode ....................................................................................................... 37
Call NumID .................................................................................................................. 38
Configuring the ISU 512 for Leased Digital Service...................................................... 39
Clock Mode................................................................................................................... 39
Channel Rate ................................................................................................................ 40
Test Remote .................................................................................................................. 41
Maintenance Setup ...................................................................................................... 41
Auto Traps...................................................................................................... 41
ADLP Address............................................................................................... 41
Port Mode ....................................................................................................... 41
Setting DTE Options .......................................................................................................... 42
Maximum Bit Rate....................................................................................................... 42
Connector Type............................................................................................................ 43
RS-530 to V.35 Cable.................................................................................................... 43
RS-366 Y Cable ............................................................................................................. 43
CTS Options.................................................................................................................. 44
CD Options................................................................................................................... 44
DTR Options................................................................................................................. 44
DSR Options ................................................................................................................. 45
BONDING setup ................................................................................................................ 46
61202.086L1-1 User Manual 61202.086L1-1
Table of Contents
TXINIT .......................................................................................................................... 46
TXFA.............................................................................................................................. 47
TXADD01...................................................................................................................... 47
TXDEQ .......................................................................................................................... 47
TANULL ....................................................................................................................... 47
TCID .............................................................................................................................. 48
Call Stagger................................................................................................................... 48
Transparent 2x Clear Channel Protocol.......................................................................... 49
Quick Setup Configuration............................................................................................... 50
Dial 512K....................................................................................................................... 50
Dial 384K....................................................................................................................... 51
Dial 448K....................................................................................................................... 51
Dial 336K....................................................................................................................... 51
Video 384K.................................................................................................................... 52
Video 336K.................................................................................................................... 52
Leased Master .............................................................................................................. 52
Leased Slave and Ldm SlvMstr................................................................................. 53
Dialing Options .................................................................................................................. 54
Hang Up Line............................................................................................................... 54
Dial Number................................................................................................................. 54
Redial Last Number .................................................................................................... 54
Answer Call.................................................................................................................. 54
Dial Stored Number.................................................................................................... 54
Store/Review Number ............................................................................................... 55
Configuring the ISU 512 for V.25 bis In-band Dialing.................................................. 56
Chapter 6. Testing ............................................................................................................ 57
Test Options ........................................................................................................................ 57
Loopback DTE.............................................................................................................. 57
Loopback Protocol....................................................................................................... 57
2047 Checker ................................................................................................................ 58
Near-End Block Errors/Far-End Block Errors (NEBE/FEBE).............................. 59
Software Version.......................................................................................................... 59
Chapter 7. Troubleshooting ........................................................................................... 61
If Self Test Fails................................................................................................................... 61
If an ISDN Network Line Reads Down .......................................................................... 61
If the Display Reads TEI1.................................................................................................. 63
If the Display Reads TEI2.................................................................................................. 64
If the Display Reads SPID{1,3,5, or 7}.............................................................................. 65
If the Display Reads SPID{2,4,6, or 8}.............................................................................. 65
Chapter 8. Specifications Summary.............................................................................. 67
Specifications and Features............................................................................................... 67
Network Interface ......................................................................................... 67
DTE Interface ................................................................................................. 67
Dialing Selections.......................................................................................... 67
Data Rates....................................................................................................... 67
61202.086L1-1 ISU 512 User Manual
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Table of Contents
Rate Adaption ................................................................................................ 67
Interoperability .............................................................................................. 67
D Channel Switch Compatibility ................................................................ 68
B Channel Aggregation ................................................................................ 68
Display ............................................................................................................ 68
Environmental ............................................................................................... 68
Physical ........................................................................................................... 68
Power............................................................................................................... 68
Appendix A. Status Buffer Messages........................................................................... 69
Appendix B. S-Register List ........................................................................................... 79
Appendix C. AT Commands ........................................................................................... 85
Appendix D. Pinouts ....................................................................................................... 89
Acronyms ............................................................................................................................ 97
Glossary............................................................................................................................... 99
Index .................................................................................................................................... 107
61202.086L1-1 User Manual 61202.086L1-1
List of Figures
Figure 1-1: ISU 512 Rear Panel ..................................................................................... 2
Figure 1-2: ISU 512 (U interface) Applications .......................................................... 4
Figure 3-1: Maintenance Port VT 100 Menu ............................................................... 12
Figure 3-2: VT 100 Configuration Menu ..................................................................... 15
Figure 3-3: VT 100 Configuration Menu 2 .................................................................. 15
Figure 3-4: VT 100 Status Screen .................................................................................. 16
Figure 3-5: VT 100 Test Menu ....................................................................................... 16
Figure 3-6: VT 100 Dial Menu ....................................................................................... 17
Figure 4-1: Network Connection Status ...................................................................... 19
Figure 4-2: LCD Display of the Main Menu ............................................................... 20
Figure 4-3: ISU 512 Front View .....................................................................................22
Figure 5-1: Configuration Menu ..................................................................................26
Figure 5-2: Dial Options Menu ..................................................................................... 31
Figure 5-3: Leased Line Menu ...................................................................................... 39
Figure 5-4: Limited Distance Modem Application .................................................... 40
Figure 5-5: Leased Application with Channel Banks ................................................ 40
Figure 6-1: ISU 512 Loopback Points ........................................................................... 57
Figure D-1: EIA-232 to DB-25 Adapter Connector ..................................................... 89
Figure D-2: RJ-45 ISDN Line Interface ......................................................................... 89
Figure D-3: EIA-232, RS-366, and RS-530 Connector ................................................. 90
Figure D-4: V.35 Connector ........................................................................................... 90
Figure D-5: RS-366 Y Cable ............................................................................................ 95
Figure D-6: RS-530 to V.35 Adapter Cable ..................................................................95
61202.086L1-1 ISU 512 User Manual
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Table of Contents
vi
61202.086L1-1 User Manual 61202.086L1-1
List of Tables
Table 1-A: ISU 512 Synchronous Rates ...................................................................... 5
Table C-A: AT Commands ............................................................................................ 85
Table D-A: Pinouts for Chain In and Chain Out Ports .............................................89
Table D-B: Pinouts for IFC RJ-45 Connectors ............................................................ 90
Table D-C: RS-366 Dialing Port Pinouts ......................................................................91
Table D-D: RS-530 Pinouts ............................................................................................ 92
Table D-E: V.35 Pinouts ................................................................................................ 93
Table D-F: RS-530-to-V.35 Adapter Cable Pinouts ................................................... 94
61202.086L1-1 ISU 512 User Manual
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Table of Contents
viii
61202.086L1-1 User Manual 61202.086L1-1
Understanding ISDN and the ISU 512
ISDN OVERVIEW
Chapter 1
The Integrated Services Digital Network (ISDN) is a public or private switched
digital network. ISDN is an international standard for digital communications, allowing a full range of enhanced services supporting voice, data, and
image applications through standard interfaces over a single pair of telephone
wires. ISDN provides a means of integrating these services and modernizing
communication networks for information movement and management efficiency.
PRODUCT OVERVIEW
The ADTRAN ISDN Service Unit (ISU
nects data terminal equipment (DTE) to the ISDN network or to a leased digital network for data transmission. The ISU 512 is a basic inverse multiplexer
that provides cost-effective high-speed data transmission for a single application at rates up to 512 kbps.
From the network, ISDN is delivered by up to four 2-wire 2B1Q ISDN Basic
Rate U-interfaces which connect directly to the ISU 512 (U interface). ISDN
network termination is designed into the ISU 512, eliminating the need for separate NT1s. For network testing, the ISU 512 responds to NT1 test commands
from the telephone company central office (CO). The ISU 512 (ST interface) is
designed to work with the 4-wire AMI signals provided by an NT1.
™
) 512 is a stand alone device that con-
61202.086L1-1 ISU 512 User Manual
1
Chapter 1: Understanding ISDN and the ISU 512
The ISU 512 transmits data over an RS-530 or V.35 interface, selectable from
the front panel. The ISU 512 performs at synchronous data transfer rates of 56
kbps to 512 kbps. At rates over 64 kbps, the BONDING Mode 1 inverse multiplexing protocol synchronizes data over up to eight 64 kbps B channels. By
supporting BONDING, the ISU 512 interoperates with other BONDING-compatible inverse multiplexers and ISDN terminal adapters. The ISU 512 is intended to support the transfer of data and images over ISDN.
The ISU 512 has four RJ-45 jacks available on the rear panel for network connection (see Figure 1-1).
2
#1 #2
CONTROL/
CHAIN PORT
IN
ISDN IFC
OUT
#3
V.35
#4
RS530
RS366 DIALING PORT
O
N
90-250 VAC
50/60HZ.15A
O
F
F
Figure 1-1
ISU 512 Rear Panel
The ISU 512 (U interface) also supports a leased digital connection that allows
data to be transferred at up to 512 kbps. This type of service is a permanent
connection between end points and is sometimes referred to as a leased connection, a dedicated connection, a nailed-up connection, a private circuit, or a
limited distance modem (LDM) connection. Leased connection or leased application is used in this manual to represent these types of services.
The ISU 512 can be configured using the front panel keypad, remotely over the
ISDN line, or using a VT 100 terminal operating at 9600 bps (8 data bits, 1 stop
bit, no parity). The VT 100 terminal interface is connected to the ISU 512
through the Chain In port on the rear of the unit. See the section VT 100 Menu
Interface in Chapter 3 for more information. The front panel keypad and the
terminal interface support test modes, test status, and dialing.
ISU 512 User Manual 61202.086L1-1
Chapter 1: Understanding ISDN and the ISU 512
Dialing from the ISU 512 is accomplished in a variety of ways:
• Manually from the front panel keypad.
• Manually from up to ten stored numbers.
• Automatically through an RS-366 dialing port used in video conferencing
applications; a special RS-366 Y cable provides the two RS-366 interfaces
for this application (part number 1200120L1).
• V.25 bis in-band dialing (used in applications such as LAN/WAN bridging).
• Dialing while DTR is enabled. From Stored Number 0.
• Dialing from the VT 100 terminal interface.
The ISU 512 (U interface) also supports dedicated leased 2B1Q services. This
provides a dedicated point-to-point service (as in a limited distance modem or
leased line application) with no dialing necessary.
The ISU 512 is designed to operate in a dual-port mode for videoconferencing
at 112/128 kbps. This allows end-to-end compatibility when communicating
with a video system that is utilizing two Switched 56 DSUs or a dual-port
ISDN terminal adaptor. For this application, 56/64 kbps is transmitted over
the V.35 interface and the RS-530 interface. An RS-530 to V.35 adapter (part
number 1200072L1) is available to provide the necessary V.35 interface for the
second port. Also, a special RS-366 Y cable (part number 1200120L1) provides
the two RS-366 interfaces for this application. For convenience in communicating with multiple video sites, the ISU 512 transparently switches between
the dual-port mode at 112/128 kbps and the single-port mode of 336/384 kbps
without user intervention and reconfiguration of the unit.
61202.086L1-1 ISU 512 User Manual
3
Chapter 1: Understanding ISDN and the ISU 512
ISU 512 INTEROPERABILITY
Telephone networks are evolving from analog technologies to digital technologies such as ISDN. This transition is time-consuming and costly for telephone companies and upgrading all locations and facilities is a lengthy
process.
The ISU 512 bridges this transition by supporting communications with existing and future network services and equipment. The ISU 512 supports communications with Switched 56 (SW56) Service and Switched 56 DSUs (2-wire
and 4-wire) as well as various ISDN terminal adapters, ISDN terminal equipment, and BONDING Mode 1-compatible inverse multiplexers.
4
Figure 1-2 illustrates the ISU 512 (U interface) operation in various switched
network services and customer premises products.
Videoconferencing
•Cost-effective video at 384 and
512 kbps
•Interoperates with
SW56 DSUs and dual port
ISDN TAs at 112/128 kbps
High-Speed File Transfers
•Image transfer
•Data backup
Disaster Recovery - T1 Backup
•TSU with Dial Backup
Module (DBU)
•Up to 512 kbps of backup
bandwidth
The ISU 512 (ST interface) will also support these configurations but will require an
external NT1 for each BRI line.
ISDN SWITCH
ISDN SWITCH
ISDN SWITCH
Up to 4 BRI U-Interfaces
Up to 4 BRI U-Interfaces
Up to 4 BRI U-Interfaces
T1
ADTRAN T1 DSU/CSU,
TSU 100, OR TSU 600
RS CS TD RD CD TR SR
ISU 512
ISU 512
1 2 3
ENTER
4 5 6
7 8 9
CANCEL
*
#0
RS-530/V.35
V.35
ISU 512
RS CS TD RD CD TR SR
ISU 512
1 2 3
ENTER
4 5 6
7 8 9
#0
CANCEL
*
512 kbps
High-speed
workstation
ISU 512
ISU 512
1 2 3
ENTER
4 5 6
7 8 9
RS CS TD RD CD TR SR
V.35
#0
CANCEL
*
Bridge/Router
Figure 1-2
ISU 512 (U interface) Applications
ISU 512 User Manual 61202.086L1-1
Chapter 1: Understanding ISDN and the ISU 512
RECOMMENDED OPERATING PROTOCOLS
The ISU 512 supports BONDING Mode 1. For applications such as videoconferencing, in which the unit needs to interoperate with two SW56 lines or one
dual-port ISDN device, the 2 x clear channel protocol (dual-port mode) is used.
The ISU 512 automatically uses the 2 x clear channel protocol whenever it does
not find a BONDING partner. The first call (incoming or outgoing) connects
to the V.35 port in 2 x clear channel protocol. The second call (incoming or outgoing) connects to the RS-530 port. An RS-530 to V.35 cable (part number
1200072L1) may be required in some applications. Table 1-A lists the synchronous rates supported by the ISU 512, and the number of interfaces required
from the telephone company to accomplish the rate.
ISU 512 Synchronous Rates
Rates
(Synchronous)
1x56K BONDING/Clear Channel 1
1x64K BONDING/Clear Channel 1
2x56K BONDING/2 x Clear Channel Protocol 1
2x64K BONDING/2 x Clear Channel Protocol 1
3x56K BONDING 2
3x64K BONDING 2
4x56K BONDING 2
4x64K BONDING 2
5x56K BONDING 3
5x64K BONDING 3
6x56K BONDING 3
6x64K BONDING 3
7x56K BONDING 4
7x64K BONDING 4
8x56K BONDING 4
8x64K BONDING 4
Rate Adaption Method
Table 1-A
IFCs
Required
61202.086L1-1 ISU 512 User Manual
5
Chapter 1: Understanding ISDN and the ISU 512
6
ISU 512 User Manual 61202.086L1-1
Chapter 2
Ordering ISDN
ISDN is a complex service with many network options. Obtaining service
from the local telephone company and long distance providers can be complicated.
The following instructions only apply to North American switches.
In North America, the development of ISDN Ordering Codes (IOCs) simplifies
the process of ordering ISDN service. The ISDN Solutions Group, a consortium of ISDN equipment vendors, service providers, and Bellcore, established
these codes to represent predetermined line configurations for ISDN Basic
Rate service for specific applications.
ADTRAN and Bellcore have registered and tested eight generic IOCs. These
IOCs are supported by all major local exchange carriers as well as several independent carriers.
Capability S ( previously Generic Data M) ordering code is recommended for
ISU 512 applications. It is the most feature-rich and supports most voice and
data applications. The voice capability is not necessary for operation of the
ISU 512; however it is useful in troubleshooting a misconfigured ISDN line. In
some areas, ISDN tariffs may warrant the use of ordering codes with less features. For example, in a particular region, there may be additional monthly expense associated with having voice service on each B channel. If you have a
data only application Capability R (previously Generic Data I ) may be more
cost-effective. Each ISDN line provides 112/128 kbps of service. If 512 kbps is
needed for your application, order four ISDN lines. If 384 kbps is needed, only
order three ISDN lines, etc.
61202.086L1-1 ISU 512 User Manual
7
Chapter 2: Ordering ISDN
For more information regarding ordering ISDN, see the ADTRAN document
Ordering ISDN Service User Guide part number 60000.015-8, or contact the tele-
phone company for alternative line configurations. The Ordering ISDN Service
User Guide is available on the ADTRAN home page at http://www.adtran.com
(go to the Service and Support page and then to the ISDN Information Desk)
or by calling ADTRAN at (205) 963-8000.
8
ISU 512 User Manual 61202.086L1-1
INSTALLATION
Chapter 3
Installation
After unpacking the unit, immediately inspect it for possible shipping damage. If damage is discovered, file a claim immediately with the shipping carrier, then contact ADTRAN Customer Service; see the inside back cover of this
manual for phone numbers.
NETWORK CONNECTION
The ISU 512 (U interface) supports either
512 (ST interface) supports only Dial operation. Four 8-pin RJ-45 modular
jacks on the rear panel of the ISU 512 allow connection to either network service.
Dial operation uses the ISDN Basic Rate interface and allows the ISU 512 to
dial out over the ISDN network. When used in this mode of operation, the
telephone company provided ISDN Basic Rate interface is connected to the RJ45 connectors marked ISDN IFC #1 , #2 , #3 , and #4 . Connect the Basic Rate interfaces to the ISU 512 in order, starting with
number of lines (four) is reached.
The Leased mode of operation supports a dedicated 2B1Q data service at rates
of up to 512 kbps by using nailed up circuits or a permanent connection between end points. This could be a limited distance modem or point-to-point
connection.
See the appendix Pinouts for network connection pin assignments.
Dial or Leased operation. The ISU
ISDN IFC #1 , until the maximum
61202.086L1-1 ISU 512 User Manual
9
Chapter 3: Installation
DTE DATA CONNECTION
Data terminal equipment (DTE) is connected to the ISU 512 by using the V.35
interface, and/or the RS-530 interface on the rear panel of the ISU 512. The
maximum cable lengths recommended are 50 feet for the RS-530 interface, or
150 feet for the V.35 interface. The pin assignments for the DTE interfaces are
shown in the appendix Pinouts.
The RS-530 interface and the V.35 interface support data rates up to 512 kbps.
The DTE rate can be configured from the front panel or the VT 100 terminal
interface of the ISU 512. See the chapter Configuration for information regarding configuring the ISU 512 with the appropriate data rates for the application.
To prevent possible radio frequency interference emissions, shielded cables are required.
DIAL INTERFACE CONNECTION
If out-of-band RS-366 dialing is required for applications such as video conferencing, the dialing interface of the host DTE should be connected to the port
labeled RS366 DIALING PORT. A special RS-366 Y cable provides the two
RS-366 interfaces required for dual-port videoconferencing applications (part
number 1200120L1). For pin assignment information for the RS-366 connector
and the RS-366 Y cable, see the appendix Pinouts.
Smart Dial String Formats
The ISU 512 accepts changes to Call Type and Channel Rate by using suffix
commands appended to the end of the dial string. The following string format
is used.
dial string
XXX XXX XXXX #C #R
Where #C changes the Call Type as follows:
1 = Speech
2 = Audio
3 = 56K Data
4 = 64K Data
call type
channel rate
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Chapter 3: Installation
Where #R changes the Channel Rate (number of ISDN B channels) as follows:
0 = (2x56k and 2x64k) 2 x Clear Channel Protocol
1 = 1 B Channel (1x56k, 1x64k) BONDING Mode 1
2 = 2 B Channels (2x56k, 2x64k) BONDING Mode 1
3 = 3 B Channels (3x56k, 3x64k) BONDING Mode 1
4 = 4 B Channels (4x56k, 4x64k) BONDING Mode 1
5 = 5 B Channels (5x56k, 5x64k) BONDING Mode 1
6 = 6 B Channels (6x56k, 6x64k) BONDING Mode 1
7 = 7 B Channels (7x56k, 7x64k) BONDING Mode 1
8 = 8 B Channels (8x56k, 8x64k) BONDING Mode 1
The following are dialing examples:
Two-port call using 64k call type (2x64) 7082906055#4#0
Two-port call using 56k call type (2x56k) 7082906055#3#0
BONDING 384k using 64k call type (6x64k) 7082906055#4#6
BONDING 336k using 56k call type (6x56k) 7082906055#3#6
BONDING 256k using 64k call type (4x64k) 7082906055#4#4
If no suffix is used, the call is placed using the values configured for the ISU
512. For example, if the ISU 512 is configured for 384K, the dial string
7082906055 is the same as 7082906055#4#6.
If the Channel Rate suffix is used, the Call Type suffix is required. However,
the Channel Rate is not required to make changes to the Call Type. For example, if the ISU 512 is configured for 384K Call Type, only the #3 suffix is re-
quired to change the Call Type to 336K. The dial string 7082906055#3 is the
same as 7082906055#3#6.
When placing non-bonded two channel calls, the originating end must use
both the Call Type and Channel Rate suffixes; otherwise, the ISU 512 attempts
to negotiate BONDING before using 2 x Clear Channel protocol. This works
for Ascend and ADTRAN; Promptus hangs the call up. Using the Channel
Rate suffix #0 causes the ISU 512 to omit BONDING negotiation and use only
2 x Clear Channel protocol; this succeeds with all vendors.
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Chapter 3: Installation
THE MAINTENANCE INTERFACE
The Maintenance Interface is available at 9600 bps, 8 data bits, no parity,
through the CHAIN IN port. See the appendix Pinouts for the Chain In port
pinout. The VT 100 terminal or null modem can be connected to the Chain In
port using the RJ-45 to DB-25 adapter (part number 3196.ADPT003) and the
RJ-45 to RJ-45 cable provided with the unit. The port contains transmit and receive data (EIA-232 compatible). This interface can be used to set internal Sregisters, dial ISDN connections, and disconnect calls. This port also allows
ADTRAN Technical Support personnel to retrieve vital information from the
unit if a problem is encountered during initial configuration of the ISU 512.
Most problems can be solved without resorting to this port for assistance.
The terminal should be set for 9600 bps, 8 data bits, and no parity. The maintenance port is activated by typing !V at the - - 512-> prompt.
There are four maintenance port commands available to display and clear the
status buffer, display the internal print buffer, loop status and help screen; see
Figure 3-1.
Figure 3-1
Maintenance Port VT 100 Menu
Plugging the RJ-45 cable from the telephone service provider into the Chain In or
Chain Out ports could cause damage to the ISU 512.
12 ISU 512 User Manual 61202.086L1-1
Software Update
There are two methods available for updating ISU 512 software. The local
method involves using the Chain In port and is described in this section. The
remote method involves transmitting smart dial strings over a dial-up connection and is described in the section Remote Access of the chapter Configuration.
The ISU 512 contains Flash memory allowing the software to be updated using
the Chain In port. The ISU 512 software can be updated using any PC with an
EIA-232 COM port and a communication package supporting XMODEM protocol. Download speed and format are set to 38400 bps, 8 data bits, 1 stop bit,
no parity, and no flow control. After obtaining a new code file with the extension (.bin) from Technical Support (see the inside back cover), use the following procedure to update the software:
Ensure the terminal software package has flow control turned off.
1. Power the ISU 512 Off.
2. Connect the PC to the ISU 512 using an RJ-45 to DB-25 adapter (part number 3196.ADPT003) connected from the Chain In (RJ-45) connector on the
rear panel of the ISU 512 to the COM port on the PC. See the appendix Pi-
nouts for a diagram of this cable.
3. Start the communication package, supporting XMODEM protocol, on the
PC. Set for Connect Local if necessary.
4. Set the COM port for 38400, 8, 1, n and no flow control.
5. Start the XMODEM protocol and transfer the .bin file to the ISU 512.
XMODEM should come on-line and wait for the far end to connect. The
far end in this case is the ISU 512.
6. Power On the ISU 512 while holding the Up Arrow. Holding the Up Ar-
row during self test initiates the software update.
Chapter 3: Installation
Do not power Off the unit during the loading process. After the load is complete the
ISU 512 restarts itself. If power is lost during the software load, repeat the procedure
from the beginning.
It may be necessary to set the communications software to Connect Local, which sets
the session up to ignore carrier detect on the EIA-232 port and transfer files anyway.
61202.086L1-1 ISU 512 User Manual 13
Chapter 3: Installation
VT 100 MENU INTERFACE
The VT 100 menu interface can be used by connecting a VT 100 compatible terminal to the Chain In port on the back of the ISU 512. The VT 100 terminal (or
PC running terminal emulation software) is connected to the Chain In port using the RJ-45 to DB-25 adapter (part number 3196.ADPT003) and the RJ-45 to
RJ-45 cable provided with the unit. See the appendix Pinouts for the Chain In
port pinout information. The Chain In port is a DCE connector that contains
transmit (Tx) and receive (Rx) data (EIA-232 compatible signals) and system
ground. The terminal should be set for 9600 bps, 8 data bits, 1 stop bit, and
no parity. The VT 100 menu is activated by typing !V at the - - 512-> prompt.
Remote access to the ISU 512 is supported through the Chain In port by use of
a null modem cable connected to a modem (DCE interface). Use the RJ-45 to
DB-25 adapter (part number 3196.ADPT003) and the RJ-45 to RJ-45 cable to
connect the modem to the Chain In port. Ensure that the modem is set for Ig-
nore DTR and Auto Answer is enabled.
The VT 100 menu interface can be used instead of the front panel to set options
and dial up ISDN connections. Test functions and unit status can also be obtained by using the VT 100 menu interface. To select a function, press the number corresponding to the function and press Enter.
The bottom of each screen displays commands available for accessing other
menus or exiting the VT 100 interface. These commands require the use of the
Control key (Ctl) and a letter.
The first screen displayed is the Configuration Screen (Ctl+C). From this
screen ISU 512 options are configured; see Figure 3-2. Selecting option 32)-
MORE- displays a second Configuration screen with additional setup options;
see Figure 3-3.
The Status Screen (Ctl+V) is used to view the current status of the ISU 512; see
Figure 3-4. The Test Screen (Ctl+T) activates DTE and protocol loopbacks; see
Figure 3-5. The Dial Screen (Ctl+D) is used to dial and terminate calls; see Figure 3-6.
Select Ctl+X to exit the VT 100 menu interface and return control to the Maintenance interface. See the section The Maintenance Interface for more information.
14 ISU 512 User Manual 61202.086L1-1
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