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Server Cards

Reference Guide

Publication 2008-S

Revision A0

IMACS System

Release 5.1.6

April 2003

Trademarks:

5ESS is a registered trademark of Lucent Technologies DMS-100 and DMS-200 are trademarks of Northern Telecom. Nortel is a trademark of Northern Telecom

HyperTerminal is a registered trademark of Microsoft

Premisys is a registered trademark of Premisys Communications, Inc. SLC is a registered trademark of Lucent Technologies

Windows 3.1 and 95 are registered trademarks of Microsoft

All other trademarks and registered trademarks are the property of their respective holders.

FCC Registration number: 1H5SNG-73866-DD-E (integral CSU) B468NR-68618-DM-E (internal modem)

Canadian Certification Number: 1932 5217 A

Canadian DOC Load number: 5

Ringer Equivalence number: 0.2A (internal modem)

Approvals:

UL listed to UL# 1459 Second Edition, Third Edition

CSA listed to C22.2 No. 950-M89

COPYRIGHT © 1992-2003 Premisys Communications, Inc. All rights reserved.

This publication is protected by federal copyright law. No part of this publication may be copied or distributed, transmitted, transcribed, stored in a retrieval system, or translated into any human or computer language in any form or by any means, electronic, mechanical, magnetic, manual or otherwise, or disclosed to third parties without the express written permission from the manufacturer.

The manufacturer makes no representation or warranties with respect to the contents hereof and specifically disclaims any implied warranties of merchantability or fitness for a particular purpose. Further, the manufacturer reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation from the manufacturer to notify any person of such revision or changes.

Product Description

The Server Cards provide voice compression that accept inputs directly from Voice Cards in the same system unit, or voice traffic from WAN links through the system.

Server Cards

ADPCM

ADPCM 64 (887160)

FRS

ACS-FRS (881160)

MCC

ACS-MCC (881360)

ATM ACS-ATM (882060)

ISDN-PRI ISDN-PRI (884060)

PRI-BRI

ACS-PRI (881162)

IMUX

IMUX (8880)

IPR

IPR 10B2 (883060), IPR 10BT (883160), IPR (881161)

Note: Cards listed in italics have been Manufacturing Discontinued (MD), but are supported under this product host code for backward compatibility.

Using this Server Card Reference Guide

This Server Card Reference Guide provides technicians with installation, switch settings, connector pinouts, configuration, and troubleshooting information for the Server Cards.

Chapter 1. ADPCM Card

Chapter 2, FRS Card

Chapter 3, MCC Card

Chapter 4, PRI-BRI Card

Chapter 5, IPR Card

Contents

1.1

Introduction ....................................................................................................

1-1

1.2

ADPCM Card Descriptions ............................................................................

1-1

1.2.1

ADPCM 64 Card Description (887160).....................................................

1-1

1.2.1.1

Card Jumper/Switch Settings .................................................................

1-2

1.2.1.2

Installing the ADPCM Card ...................................................................

1-2

1.3

ADPCM Card User Screens and Settings ......................................................

1-3

1.3.1

ADPCM Card Main Screen........................................................................

1-3

1.4

ADPCM Card Error Messages .......................................................................

1-7

1.5

ADPCM Card Troubleshooting .....................................................................

1-7

1.6

ADPCM Server Card Specifications ..............................................................

1-8

2.1

Introduction ....................................................................................................

2-1

2.2

ACS-FRS Card Descriptions ..........................................................................

2-1

2.2.1

ACS-FRS Card Description (881160) ........................................................

2-1

2.2.1.1

Card Jumpers/Switch Settings................................................................

2-1

2.2.1.2

Installing the Card ..................................................................................

2-1

2.3

ACS-FRS Card User Screens and Settings ....................................................

2-2

2.3.1

ACS-FRS Card Main Screen ......................................................................

2-2

2.3.2

Frame Relay Endpoints Screen ..................................................................

2-8

2.3.3

FRS Circuits Screen .................................................................................

2-11

2.3.4

FRS Circuit Performance Data Screen .....................................................

2-15

2.3.5

Circuit Congestion Data Screen ...............................................................

2-18

2.3.6

Port Performance Data Screen..................................................................

2-21

2.3.7

LMI Data Screen ......................................................................................

2-23

2.3.8

Global Setup Screen .................................................................................

2-26

2.4

ACS-FRS Card Error Messages ...................................................................

2-27

2.5

ACS-FRS Card Troubleshooting .................................................................

2-27

2.6

ACS-FRS Server Card Specifications ..........................................................

2-28

3.1

Introduction ....................................................................................................

3-1

3.2

ACS-MCC Card Descriptions ........................................................................

3-1

3.2.1

ACS-MCC Card Description (881360) ......................................................

3-1

3.2.1.1

Jumper/Switch Settings ..........................................................................

3-2

3.2.1.2

Installing the Card ..................................................................................

3-2

3.3

ACS-MCC Card User Screens and Settings ..................................................

3-3

3.3.1

ACS-MCC Card Main Screen (Ethernet Port Configuration)....................

3-3

3.3.1.1

C-Port and Numbered Port Configuration (1.1 Version Only) ..............

3-7

3.4

Network Port Statistics Screen .....................................................................

3-11

3.4.1

MCC Protocol Stack Data Screen ............................................................

3-13

3.5

ACS-MCC Card Error Messages .................................................................

3-16

3.6

ACS-MCC Card Troubleshooting ................................................................

3-16

4.1

Introduction ....................................................................................................

4-1

4.1.1

Definitions ..................................................................................................

4-1

4.1.1.1

Timeslot..................................................................................................

4-1

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4.1.1.2

DS0 ........................................................................................................

4-1

4.1.1.3

B Channel ..............................................................................................

4-2

4.1.1.4

D Channel ..............................................................................................

4-2

4.1.1.5

Facility ...................................................................................................

4-2

4.1.1.6

Interface .................................................................................................

4-2

4.1.1.7

NFAS (Non-Facility Associated Signaling) ..........................................

4-2

4.1.1.8

Trunks ....................................................................................................

4-3

4.1.2

Selecting D Channels, B Channels, and DS0s ...........................................

4-3

4.1.3

Network and User Side Protocols ..............................................................

4-6

4.1.4

Call Routing ...............................................................................................

4-8

4.1.4.1

Calls Originating from an HSU Port .....................................................

4-8

4.1.4.2

Calls Destined to an HSU Port ..............................................................

4-8

4.1.4.3

Calls Originating from a D Channel ......................................................

4-8

4.1.5

ISDN Trunks ..............................................................................................

4-9

4.1.6

Local Routing ............................................................................................

4-9

4.1.7

Call Profiles .............................................................................................

4-11

4.2

ACS-PRI/BRI Card Description ..................................................................

4-12

4.2.1

ACS-PRI/BRI Card Description (881162) ..............................................

4-12

4.2.1.1

Card Jumpers/Switch Settings .............................................................

4-12

4.2.1.2

Installing the Card ...............................................................................

4-12

4.3

ACS-PRI/BRI Card User Screens and Settings ...........................................

4-13

4.3.1

ACS-PRI/BRI Card Main Screen ............................................................

4-13

4.3.1.1

Main Screen Parameters ......................................................................

4-13

4.3.2

D Channel Configuration Screen .............................................................

4-16

4.4

Configuring ISDN Features .........................................................................

4-20

4.4.1

Assigning Interface Identifications ..........................................................

4-20

4.4.2

Assigning B Channels..............................................................................

4-22

4.4.3

Assigning B Channels to One D Channel................................................

4-23

4.4.4

Assignments for Two or More D Channels .............................................

4-25

4.4.5

B Channel Status......................................................................................

4-27

4.4.6

Assigning ISDN Trunks...........................................................................

4-29

4.4.7

Routing ISDN Trunks ..............................................................................

4-30

4.4.8

Assignment of Services ...........................................................................

4-31

4.4.9

Routing of Incoming Calls.......................................................................

4-33

4.4.10

Special Numbers ......................................................................................

4-34

4.4.11

Performance Monitoring ..........................................................................

4-35

4.4.12

Remote Login Using the D Channel ........................................................

4-37

4.4.13

Initiate Remote Login ..............................................................................

4-38

4.4.14

Terminate the Session ..............................................................................

4-38

4.5

ACS-PRI/BRI Card Error Messages ...........................................................

4-39

4.6

ACS-PRI/BRI Card Troubleshooting ..........................................................

4-39

5.1

Introduction ...................................................................................................

5-1

5.2

IPR Card Descriptions ...................................................................................

5-1

5.2.1

IPR 10B2 and 10BT Cards Description (883060/883160) ........................

5-1

5.2.1.1

Card Jumpers/Switch Settings ...............................................................

5-2

5.2.2

Installing the IPR Cards .............................................................................

5-2

5.3

Frame Relay Network ....................................................................................

5-3

5.3.1

IPR Connecting IP LANs ..........................................................................

5-3

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Server Cards

5.3.1.1

IPR to the Internet ..................................................................................

5-4

5.3.1.2

IPR..........................................................................................................

5-5

5.4

IPR WAN Routing .........................................................................................

5-6

5.4.1

Hub-and-Spoke...........................................................................................

5-6

5.5

Fully Meshed vs. Partially Meshed ................................................................

5-7

5.5.1

Fully Meshed Frame Relay Network .........................................................

5-7

5.5.2

Partially Meshed Frame Relay Network (Same IP Network) ....................

5-8

5.5.3

Partially Meshed Frame Relay Network (Different IP Network) ..............

5-9

5.5.4

Unnumbered IP Interface .........................................................................

5-10

5.6

IPR Card Configuration Screens and Settings .............................................

5-11

5.6.1

IPR 10B2 (883060) and 10BT (883160) Cards Main Screen ..................

5-11

5.6.2

Ethernet and Default IP Screen ................................................................

5-13

5.6.3

Ethernet Performance Screen ...................................................................

5-16

5.6.4

ARP Screen ..............................................................................................

5-17

5.6.5

Frame Relay Ports Configuration Screen .................................................

5-18

5.6.6

Frame Relay PVC Configuration Screen .................................................

5-21

5.6.7

PVC Performance Screen .........................................................................

5-24

5.6.8

Frame Relay Port Performance Screen.....................................................

5-25

5.6.9

Frame Relay Port LMI Screen..................................................................

5-26

5.6.10

IP Routing Table Screen...........................................................................

5-27

5.6.11

Static Routes Configuration Screen..........................................................

5-28

5.6.12

IP Performance Screen (Netstats).............................................................

5-30

5.7

IPR Card Error Messages .............................................................................

5-31

5.8

IPR Card Troubleshooting ...........................................................................

5-31

5.9

IPR Server Card Specifications ....................................................................

5-32

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Server Cards

Figures

1-1

Typical ADPCM Card Main Screen .....................................................................................

1-3

2-1

Typical ACS-FRS Card Main Screen (ports C1 to C4) ........................................................

2-2

2-2

Typical ACS-FRS Card Main Screen (numbered ports) ......................................................

2-3

2-3

Typical Frame Relay Endpoints Screen................................................................................

2-8

2-4

Typical Circuits Screen.......................................................................................................

2-11

2-5

Typical FRS Endpoint Circuit ............................................................................................

2-12

2-6

Typical Circuit Performance Data Screen ..........................................................................

2-15

2-7

Typical Circuit Congestion Data Screen ...........................................................................

2-18

2-8

Typical Port Performance Data Screen..............................................................................

2-21

2-9

Typical LMI Data Screen ...................................................................................................

2-23

2-10

Global Data Screen ............................................................................................................

2-26

3-1

Typical MCC Application ....................................................................................................

3-2

3-2

Typical ACS-MCC Card Main Screen ................................................................................

3-3

3-3

Typical C-Port Screen..........................................................................................................

3-7

3-4

Typical Numbered Port Screen............................................................................................

3-8

3-5

Typical Network Port Data Screen ....................................................................................

3-11

3-6

Typical MCC Protocol Stack Data Screen ........................................................................

3-13

4-1

ISDN Channels: 191B+D ....................................................................................................

4-3

4-2

DS0s and B Channels on the Same Facility ........................................................................

4-4

4-3

ACS-PRI/BRI Links to Two Carriers from an ISDN PBX .................................................

4-5

4-4

ACS-PRI/BRI Links to Two Carriers ..................................................................................

4-6

4-5

Network and User Side Protocols ........................................................................................

4-7

4-6

Call Routing .......................................................................................................................

4-10

4-7

ACS-PRI/BRI Call Status Screen ......................................................................................

4-13

4-8

D Channel Configuration Screen .......................................................................................

4-16

4-9

Interface Identification Screen............................................................................................

4-21

4-10

Basic Bmap Screen ............................................................................................................

4-22

4-11

Assigned Bmap Screen ......................................................................................................

4-23

4-12

WAN Cross-Connect Screen .............................................................................................

4-24

4-13

Assigning B Channels........................................................................................................

4-25

4-14

Completed BMap Screen ...................................................................................................

4-26

4-15

Status Screen ......................................................................................................................

4-27

4-16

Assigned Trunk Screen ......................................................................................................

4-29

4-17

Add Trunk Route Screen ...................................................................................................

4-30

4-18

Add Trunk Route Screen ...................................................................................................

4-31

4-19

Assigning Services Screen.................................................................................................

4-32

4-20

Routing Numbers Screen ...................................................................................................

4-33

4-21

Special Numbers Screen ....................................................................................................

4-34

4-22

Performance Monitoring Screen ........................................................................................

4-35

4-23

CPU Card Screen ...............................................................................................................

4-37

4-24

ISDN Card Screen .............................................................................................................

4-38

5-1

IPR Card Connected to IP LANs through Frame Relay Network .......................................

5-3

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IMACS System Release 5.1.6

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5-2

IPR Card Routed to the Internet through Frame Relay Network ........................................

5-4

5-3

IPR Card Connected to IP Nodes on Ethernet to Frame Relay Network............................

5-5

5-4

Hub-and-Spoke Topology ...................................................................................................

5-6

5-5

Fully Meshed Frame Relay Network with Full Connectivity .............................................

5-7

5-6

Partially Meshed Frame Relay Network without Full Connectivity (Same IP Network)...

5-8

5-7

Partially Meshed Frame Relay Network with Full Connectivity (Different IP Network) ..

5-9

5-8

Unnumbered Frame Relay IP Interface.............................................................................

5-10

5-9

IPR 10B2 and 10BT Card Interface Main Screen.............................................................

5-11

5-10

IPR 10B2 and 10BT Ethernet and Default IP Screen .......................................................

5-13

5-11

IPR 10B2 and 10BT Ethernet Performance Screen ..........................................................

5-16

5-12

IPR 10B2 and 10BT ARP Table Screen ...........................................................................

5-17

5-13

IPR 10B2 and 10BT Frame Relay Menu ..........................................................................

5-18

5-14

IPR 10B2 and 10BT Frame Relay PVC Configuration Screen ........................................

5-21

5-15

IPR 10B2 and 10BT PVC Performance Screen ................................................................

5-24

5-16

IPR 10B2 and 10BT Frame Relay Port Performance Screen ...........................................

5-25

5-17

IPR 10B2 and 10BT Frame Relay Port LMI Screen.........................................................

5-26

5-18

IPR 10B2 and 10BT IP Routing Table Screen..................................................................

5-27

5-19

IPR 10B2 and 10BT IP Static Routes Configuration Menu Screen..................................

5-28

5-20

IPR 10B2 and 10BT IP Performance Screen (Netstats)....................................................

5-30

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Tables

1-1

ADPCM Compression Rates ..............................................................................................

1-2

1-2

ADPCM Card Main Screen Actions .................................................................................

1-4

1-3

ADPCM Card Setting Options and Defaults .....................................................................

1-4

2-1

ACS-FRS Card Main Screen Actions ................................................................................

2-4

2-2

ACS-FRS Card Main Screen Option Settings and Defaults...............................................

2-4

2-3

Frame Relay Endpoints Screen Actions .............................................................................

2-9

2-4

FRS Circuits Screen Actions ............................................................................................

2-12

2-5

Circuit Performance Data Screen Actions ........................................................................

2-16

2-6

Circuit Congestion Data Screen Actions ..........................................................................

2-19

2-7

Port Performance Data Screen Actions ............................................................................

2-22

2-8

LMI Data Screen Actions .................................................................................................

2-24

2-9

Global Data Screen Actions .............................................................................................

2-26

3-1

Main Screen Actions ..........................................................................................................

3-4

3-2

Main Screen Option Settings and Defaults........................................................................

3-4

3-3

Port Assignment Screen Actions ........................................................................................

3-8

3-4

Port Screen Option Settings and Defaults ..........................................................................

3-9

3-5

Network Port Data Screen Actions...................................................................................

3-13

4-1

Call Status Screen .............................................................................................................

4-14

4-2

ACS-PRI/BRI Screen Menu of Actions ...........................................................................

4-15

4-3

Options and Defaults ........................................................................................................

4-17

4-4

ACS-PRI/BRI Screen Menu of Actions ...........................................................................

4-19

4-5

Status Screen Menu of Actions ........................................................................................

4-28

5-1

IPR 10B2 and 10BT Card Main Screen Actions ..............................................................

5-12

5-2

IPR 10B2 and 10BT Card Interface Option Settings and Defaults ..................................

5-12

5-3

IPR 10B2 and 10BT Ethernet and Default IP Screen Actions .........................................

5-13

5-4

IPR 10B2 and 10BT Ethernet and Default IP Option Settings and Defaults ...................

5-14

5-5

IPR 10B2 and 10BT Frame Relay Menu Screen Actions ................................................

5-18

5-6

IPR 10B2 and 10BT Frame Relay Menu Option Settings and Defaults ..........................

5-19

5-7

IPR 10B2 and 10BT Frame Relay PVC Configuration Screen Actions ..........................

5-21

5-8

IPR 10B2 and 10BT FR PVC Configuration Option Settings and Defaults ....................

5-22

5-9

IPR 10B2 and 10BT IP Static Routes Configuration Table Screen Actions....................

5-28

5-10

IPR 10B2 and 10BT IP Static Routes Configuration Option Settings and Defaults ........

5-29

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ADPCM Card

Introduction

Chapter 1

ADPCM Card

1.1Introduction

This chapter provides installation, configuration, and troubleshooting information for the Adaptive Differential Pulse-Code Modulation (ADPCM) Card. This card is labeled as the ADPCM 64 card on its faceplate ejector.

1.2ADPCM Card Descriptions

1.2.1ADPCM 64 Card Description (887160)

The ADPCM 64 Card has 32 pairs of voice compression engines that accept inputs directly from voice, SRU, and/or BRI data cards in the same system unit, or voice traffic from WAN links through the system. This card requires a matching card at the other end to decompress the voice channels to normal 64 kbps operation.

With previous versions of the IMACS, signaling conversion was only supported for voice ports when routed over the WAN and not when routed through an ADPCM card. With version 5.3.1 and higher of the IMACS host CPU firmware, signaling conversion is also supported for voice channels routed through the ADPCM. The conversion table is the same as for passing the channel through a WAN, and available from the interface card’s main screen by selecting “taBs”. Signaling conversion is enabled / disabled using the same SIG CONV parameter as used for conversion over a WAN. This field is found on Figure 1-1, the E & M Voice Card’s main screen.

Each pair of compression engines uses one 64 kbps DS0 time slot for two compressed voice channels. Each engine can compress 64 kbps voice traffic into 24 kbps, 32 kbps, or 40 kbps, depending on the voice signal quality required.

The rate of a DS0 time slot is 64 kbps, so the sum of the compression rates for engines 1 and 2 must equal 64 kbps. For example, if you assign a 32 kbps circuit to engine 1, engine 2 can only accept another 32 kbps circuit. Also, a 40 kbps circuit can only be paired with a 24 kbps circuit, and vice versa.

The ADPCM compression engines always work in pairs. Engines 1 and 2, 3 and 4, 5 and 6, and 7 and 8 are paired. Each member of the pair must have the same ADPCM WAN port and ADPCM time slot. Also, both members of the compression engine pair must be active before either port will operate.

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IMACS System Release 5.1.6

1-1

ADPCM Card Descriptions

ADPCM Card

The ADPCM 64 Card can transport low-speed asynchronous data transmission (19.2 kbps or less) from an SRU user card port that will occupy a 24 kbps engine. Each data circuit must be paired with a 40 kbps voice channel. The card can also compress B-channel voice traffic from a BRI card without restricting compression rates.

The Integrated Access System can have up to three ADPCM 64 Cards (two normal cards and an identical redundant card).

The ADPCM 64 Card supports Transition Signaling as defined in ANSI T1.302-1989, with the exception of the Alarm bits. ANSI T1.302 specifies signaling at the 32 bps compression rate. The card uses this scheme for 24 bps and 40 bps, even though those rates are not included in the standard. Table 1-1 summarizes the signals supported by each transcoder data rate. Your DS0 time slot configuration must adhere to these specifications.

Table 1-1. ADPCM Compression Rates

Transcoder

Voice Quality

Modem Data

DTMF

FAX

Rate

(MOS)*

 

 

 

 

 

 

 

 

24 kbps

3.6-3.8 Range

no

no

no

32 kbps

4.0-4.3 Range

up to 4.8 kbps

OK

Group II

 

 

V.32 9.6 kbps

 

 

 

 

 

 

 

40 kbps

4.0-4.3 Range

up to 12 kbps

OK

Group III

 

 

V.32 14.4 (no/yes)

 

 

 

 

 

 

 

*MOS = Mean Opinion Score based on subjective evaluation

1.2.1.1Card Jumper/Switch Settings

The ADPCM 64 Card does not have any jumpers or switches on its motherboard.

1.2.1.2Installing the ADPCM Card

Insert the ADPCM card into one of the server card chassis slots (P1 to P3). The system can accommodate up to three server cards.

1-2

IMACS System Release 5.1.6

Server Cards

ADPCM Card

ADPCM Card User Screens and Settings

1.3ADPCM Card User Screens and Settings

1.3.1ADPCM Card Main Screen

You must configure the ADPCM card ports for operation. This is done from the ADPCM Card Main Screen, which is shown in Figure 1-1. To go to this screen, highlight the ADPCM card in the System Main Screen and press <Enter>.

Figure 1-1. Typical ADPCM Card Main Screen

The bottom highlighted line of this screen shows several actions you can perform from the screen. To perform an action, simply press the key indicated by the uppercase letter of the desired action. For example, to save your configuration settings, press “s” to invoke the Save command. Table 1-2 lists these actions.

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ADPCM Card User Screens and Settings

ADPCM Card

 

Table 1-2. ADPCM Card Main Screen Actions

 

 

Action

Function

 

 

Save

Saves changes to settings.

Undo

Returns all settings to the last saved state.

 

 

Refresh

Redraws the current screen with the latest information.

 

 

pg_Left

Pages through the 64 engines (highest to lowest), 8 at a time.

pg_riGht

Pages through the 64 engines (lowest to highest), 8 at a time.

 

 

SWitch

Switches an active ADPCM card to its redundant mate.

 

 

Main

Returns to the ADPCM Card Main Screen. If changes are made to settings

 

and not saved, users will be prompted to save or lose changes.

 

 

Table 1-3 summarizes the ADPCM card configuration parameters and available settings. These are also described in the following paragraphs.

Table 1-3. ADPCM Card Setting Options and Defaults

Parameter

 

 

 

 

User Options

 

Default

 

 

 

 

 

 

 

 

 

 

STATE

stdby

actv

rdnt

 

 

 

 

 

stdby

USER

n/a

uX-1 through uX-8

 

 

 

n/a

 

 

 

 

 

 

 

 

WAN/SERV

n/a

w1-1

w1-2

w2-1 w2-2

w3-1

w3-2 w4-1 w4-2

none

 

 

 

 

 

 

 

 

TS

n/a

01-24 01-31

 

 

 

 

01

ADPCM W/S

w1-1

w1-2 w2-1

w2-2

w3-1

w3-2

w4-1 w4-2

none

ADPCM TS

01-24 01-31

 

 

 

 

 

01

TYPE

n/a

v&s

v trnsp

 

 

 

 

v&s

 

 

 

 

 

 

 

 

 

RATE

n/a

24K

32K

40K

 

 

 

24K

SIG MODE

n/a

e&m

fxs

plar

fxo

user

 

 

e&m

 

 

 

 

 

 

 

 

 

CODING

n/a

u-law a-inv

 

 

 

 

 

u-law

 

 

 

 

 

 

 

 

 

 

TC CGA

n/a

idle

busy

 

 

 

 

 

idle

 

 

 

 

 

 

 

 

 

 

STATE

The State setting determines whether the port is active or inactive. When assigning ADPCM engine pairs for WAN traffic, set the State setting to stdby (standby) for ports that are not yet used or not yet configured. Set it to actv (active) for ports that are ready for use.

Setting the State to rdnt (redundant) for any port on an unused card will cause that card to act as the redundant back-up for all of the other ADPCM cards in that unit. Once a card is designated as a redundant ADPCM card the only way it can be used for regular ADPCM traffic is to change the state of the selected port back to either actv or stdby.

When assigning ADPCM engine pairs from user cards, changing the port from stdby to actv and saving the selection information on the user card screen will cause the system to automatically assign an ADPCM engine.

When the engine is assigned from a user card, no changes can be made from the ADPCM card screen to any of the fields.

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ADPCM Card User Screens and Settings

USER

The User setting identifies the user card and port connected to this engine. This is the place where the ADPCM card will expect incoming (non-compressed) voice, subrate data, and B-channel traffic. If assigned from a voice, SRU, or BRI card port, this selection will show the user card slot and port number (e.g., u5-2 for the card in slot U5, port 2). If you are assigning a WAN time slot, this setting will show n/a.

WAN/SERV

The WAN/SERV setting identifies the incoming WAN link connected to this engine. This is the place where the ADPCM card will expect incoming (non-compressed) voice. If you are assigning voice traffic to a WAN time slot, this setting will show w1-1 to w4-2. If you are assigning to a voice card or SRU card port, this setting will show n/a.

TS

The Time slot parameter selects the specific time slot of the above WAN link on which the ADPCM card can expect incoming voice traffic. If WAN 1-1 is equipped with a T1 CSU module or a DSX/CEPT module configured for T1 DSX interface, the options are 1 to 24. If a DSX/CEPT module is installed on that WAN port and that module is configured for CEPT E1 interface, the options are 1 to 15 and 17 to 31. If you are assigning time slots to voice or SRU card ports, this setting will be n/a.

ADPCM W/S

The ADPCM W/S setting identifies the outgoing WAN link to which the engine is connected. If you are assigning to a voice, SRU, or BRI card port, or to voice traffic from a WAN time slot, this setting will show w1-1 through w4-2. This is the WAN link to which the ADPCM card will send its outgoing (compressed) traffic.

ADPCM TS

The ADPCM Time slot parameter selects the specific time slot on the WAN link chosen in the previous setting that the ADPCM card will send outgoing compressed traffic. The options are determined by the equipment on the WAN link selected in the previous setting. If WAN 1-1 is equipped with an 812 CSU or 811 DSX/CEPT Module configured for DSX, the options are 1 to 24. If a DSX/CEPT module is installed and configured for CEPT E1, the options are 1 to 15 and 17 to 31.

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ADPCM Card User Screens and Settings

ADPCM Card

TYPE

The Type parameter identifies the voice and signaling requirements for the incoming circuit. The options are v (voice), voice and v&s (signaling) and trnsp (transparent). Use v when the input to the ADPCM channel is a 64 kbps channel and inband signaling is not required. Use v&s when the input to the ADPCM channel is a 64 kbps voice channel and the ADPCM card must also provide inband signaling.

The trnsp setting allows you to map the outputs of SRU ports to the ADPCM channel. The subrate data will be clocked into the ADPCM channel at an input rate of 24 kbps, then passed transparently (non-compressed) through the ADPCM card to the appropriate WAN time slot. This could be useful if you have an odd number of voice channels and want to utilize the empty engine pair of the last ADPCM channel.

The B-channel traffic from the BRI card also uses the trnsp setting, but it does not place any restrictions on the compression rates.

If the engine is assigned to a voice card, this selection will show v&s. If assigned to an SRU card, it will show trnsp. You cannot change it from this screen.

RATE

The Rate parameter identifies the compression requirements for the incoming circuit. The options are 24K, 32K, and 40K. The sum of the pair of engines must always equal 64 kbps.

If this engine is assigned to a user card port, the selection will show the value that was chosen on that port. It cannot be changed from this screen.

SIG MODE

The Signaling Mode parameter identifies the type of signaling required for the incoming circuit from the network. If v&s was chosen in the Type setting, the options are e&m, fxs, plar, and fxo. If v or trnsp was chosen in the Type setting, the only option is n/a.

If this engine is assigned to a user card, this selection will show user. It cannot be changed from this screen.

CODING

The Coding parameter identifies the PCM companding format required for the incoming circuit from the network. The choices are u-law or a-inv.

If this engine is assigned to a voice or BRI card, this selection will show the value you selected for that port. If this engine is assigned to an SRU card, this selection will show u-law. It cannot be changed from this screen.

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ADPCM Card Error Messages

TC CGA

The Trunk Conditioning CGA setting identifies the type of trunk conditioning required for the incoming circuit. If v&s is chosen in the Type setting, the options are idle or busy. If trnsp or v is chosen as the Type, the only option is n/a.

If this engine is assigned to a voice card, this selection will show the value you selected on the voice card port. If assigned to an SRU or BRI card port, the field will show n/a. It cannot be changed from this screen.

1.4ADPCM Card Error Messages

Refer to Appendix B in the System Reference Guide for further information on Error Messages regarding this card.

1.5ADPCM Card Troubleshooting

The following are instructions on how to troubleshoot the ADPCM card. This is in case the card fails for any reason:

1.Green LED on faceplate.

2.Verify that the card is in the right slot, P1 through P3.

3.Reseat the card if necessary. This can be done with the power on.

4.View the card status on the main screen.

5.Check the cards configuration options. Select the card from the main screen to do this.

6.Now try to log into the ADPCM main screen. If this still didn’t work the card may be bad. Try swapping it with a new card.

7.If the ADPCM card is determined to be faulty, replace it and return the faulty unit for repair to the location specified by your distributor.

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ADPCM Server Card Specifications

ADPCM Card

1.6ADPCM Server Card Specifications

ADPCM Card (887160)

Input Voice Channels

Can originate from any 2-wire or 4-wire voice card or from a DSO on a

 

WAN (El/T1 or HDSL) interface. -law & A-law 64Kbps PCM

 

compatible on a per channel basis.

Input Sub-rate Data

SRU data traffic at 19.2Kbps or less can be carried on a 24Kbps

 

sub-channel.

Input BRI traffic

B channel voice traffic can be compressed at any of the configurable

 

rates.

Modem Data Support

Transcoder rate: 24, 32 or 40 Kbps; Modem Data: none, up to 4.8Kbps,

 

V.32 to 9.6Kbps, up to 12Kbps and V.32 bis to 14.4Kbps

Fax Support

Transcoder rate for fax: 24, 32 or 40 Kbps; none, Group II and Group

 

III fax.

Voice Quality

As measured by Mean Opinion Score (MOS) analysis, a subjective

 

evaluation with a range of 0 (poor quality) to 5 (good quality). Toll

 

quality voice is accorded a MOS of 4.0 24Kbps transcoder rate MOS is

 

3.6-3.8; 32Kbps transcoder rate MOS is 4.0-4.3 and 40Kbps transcoder

 

rate MOS is 4.0-4.3

Echo Cancellation

Non provided—typically not required

Signaling

Transmitted in-band utilizing CAS transitional signaling, as per ANSI

 

T1.302—1986 for 32Kbps and modified for use with 24Kbps and

 

40Kbps. Note Robbed Bit Signaling Alarm Transmission, as specified

 

in ANSI T1.302a-1989 is not supported.

Maximum Card Count

3 (2 active, 1 redundant)

Transcoder Operation

Compliant to G.761 Alarm Indication and Fault Handling.

Standards Compatibility

ANSI

T1.302 1989

 

T1.302a 1992

 

T1.303 1989

CEN

EN 500 081-1

 

EN 500-092-1

 

EN 60950/A2

ITU-T

G.721

 

G.723

 

G.726 12/90

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FRS Card

Introduction

Chapter 2

FRS Card

2.1Introduction

This chapter provides installation, configuration, and troubleshooting information for the Frame Relay Server (FRS) (881160) card with the 62180 Firmware.

Note that this card is labeled as an ACS card on its faceplate ejector. It is identified as an FRS card only in the user interface screens shown in this chapter. Throughout the remainder of this chapter, it will be referred to as the ACS-FRS card.

2.2ACS-FRS Card Descriptions

2.2.1ACS-FRS Card Description (881160)

The ACS-FRS card concentrates multiple N x 56K or N x 64K frame relay data streams onto one or more Nx56/64K links of the Integrated Access System. In addition to frame relay concentration, the card encapsulates data for Nx56/64K HDLC or SDLC data streams. The frame relay server software runs on the card, which provides up to 68 logical ports. Up to 128 permanent virtual circuits (PVCs) can be configured on a single card. The aggregate speeds of all ports associated with each FRS cannot exceed 8 Mbps.

The maximum frame size supported by the ACS-FRS card is 4,096 bytes per frame. Each card can switch 4,000 frames per second, assuming a frame size of 64 bytes per frame. Up to three ACS-FRS cards can be used in a system.

2.2.1.1Card Jumpers/Switch Settings

The ACS-FRS card does not have any jumpers or switches on its motherboard.

2.2.1.2Installing the Card

Insert the ACS-FRS card into one of the server card chassis slots (P1 to P3). The system can accommodate up to three server cards.

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ACS-FRS Card User Screens and Settings

FRS Card

2.3ACS-FRS Card User Screens and Settings

2.3.1ACS-FRS Card Main Screen

You must configure the ACS-FRS card for operation after installing it. This is done in the ACS-FRS Card Main Screen (Figure 2-1). To go to that screen, highlight the desired ACS-FRS card in the System Main Screen and press <Enter>.

Figure 2-1.Typical ACS-FRS Card Main Screen (ports C1 to C4)

The 68 logical ports of the card are labeled C1 to C4 and 1 to 64. However, numbered ports 1 to 64 do not appear in the above display. To see those ports, press the "<" and ">" keys to scroll through them, eight at a time. Figure 2-2 shows an ACS-FRS card Main Screen display for the first eight numbered ports.

The ports C1 to C4 cannot be used for Nx56k, only port 1 to 64 can.

Both the IPR (883060/883160) and the PM-IOR (828060) cards be used with the ACS-FRS card. The PM-IOR card however, is limited to only 14 PVCs per card, whereas the maximum number of PVCs available on the IPR card is 128.

When connecting the ACS-FRS card to the IPR or the PM-IOR, one of the 64 ports available will be used for the communication between the two.

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The maximum bandwidth possible between the IPR and ACS-FRS cards is 62 time slots provided on the internal buses “A” and “B.”

The “C1” and “C2” ports of the FRS card cannot together be assigned more than 32 time slots due to hardware limitations. The same is true for the FRS ports “C3” and “C4”. A total of 64 time slots can be assigned all the “C” ports. A similar limitation exists for the ports 1-64 terminating the voice circuits. Each group of 32 ports, 1-32, and 32-64 share a common internal pipe limited to 32 time slots each. The maximum number of time slots allows per port is one when all ports per group is active. If half the number of ports of a group is active, twice the number of time slots can be assigned per port.

The maximum internal bandwidth between FRS cards and HSU cards of an Integrated Access System is limited by the pools size of 126, but also limited by usage from this pool by the IPR/FRS connections and possible voice card usage.

Figure 2-2.Typical ACS-FRS Card Main Screen (numbered ports)

Table 2-1 lists the actions you can perform from the ACS-FRS Card Main Screen. These actions are listed at the bottom line of the screen; they are performed by pressing the uppercase letter key. For example, to save your option settings, press “s” to invoke the Save command. Table 2-2 summarizes the parameters and their option settings and defaults.

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ACS-FRS Card User Screens and Settings

FRS Card

 

 

Table 2-1. ACS-FRS Card Main Screen Actions

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Action

 

 

 

 

Function

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Save

Saves changes to settings.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Undo

Returns all settings to the last saved state.

 

 

 

 

 

Refresh

Redraws the screen.

 

 

 

 

 

 

 

 

< and >

Lets you scroll through the 68 logical ports assignable on each ACS-FRS

 

 

 

card.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Endp

Brings up the PVC Endpoints Screen where endpoints for each PVC are

 

 

 

assigned. See the PVC Endpoints Screen section of this chapter.

 

 

 

 

 

 

 

 

 

Circ

Brings up the Circuits Screen where alternate endpoints and endpoint

 

 

 

switching are assigned. See the Circuits section of this chapter.

 

 

 

 

 

 

 

 

 

 

Perf

Initiates Port Performance Monitoring of the selected ACS-FRS card port.

 

 

 

Refer to Port Performance Data section of this chapter.

 

 

 

 

 

 

 

 

 

 

Lmi

Brings up the LMI Screen where additional performance statistics are

 

 

 

stored. See the LMI section of this chapter.

 

 

 

 

 

 

 

 

 

 

 

 

Glob

Brings up the Global Screen that identifies the ACS-FRS card by IP number

 

 

 

and netmask. See the Global Setup section of this chapter.

 

 

 

 

 

 

 

 

 

 

Main

Returns to the System Main Screen. If changes are made to settings and not

 

 

 

saved, you will be prompted to save or lose changes.

 

 

 

 

 

 

 

 

 

 

Table 2-2. ACS-FRS Card Main Screen Option Settings and Defaults

 

 

 

 

 

 

 

 

 

 

Parameter

 

 

User Options

 

Notes

Default

 

 

 

 

 

 

 

 

 

 

 

 

STATE

 

stdby

actv

 

 

 

 

 

stdby

 

 

 

 

 

 

 

 

 

 

 

WAN/SRV

 

none

w1-1 w1-2

w2-1

w2-2

w3-1

 

none

 

 

 

 

w3-2

w4-1 w4-2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TS

 

n/a

table

 

 

 

 

 

n/a

 

 

 

 

 

 

 

 

 

 

 

 

RATE

 

64k

 

 

 

 

 

 

64

 

PORT TYPE

 

none

u-dce

nni

u-dte

frad

 

 

none

 

 

 

 

 

 

 

 

 

 

LOOPBACK

 

off line local

 

 

 

 

off

 

 

 

 

 

 

 

 

 

 

 

 

LMI

 

none

ansi

ccitt

lmi

 

 

1

none

 

DCE PARAM

 

n/a

enabl

 

 

 

 

2

n/a

 

DTE PARAM

 

n/a

enabl

 

 

 

 

3

n/a

 

 

 

 

 

 

 

 

 

 

 

 

ASYNC

 

no

yes

 

 

 

 

 

no

 

 

 

 

 

 

 

 

 

 

 

CONG THRS

 

enabl

1%-100%

 

 

 

4

enabl (95%)

 

Notes:

1.ansi, ccitt, and lmi can only be selected when Port Type is changed to any selection other than none.

2.When Port Type is u-dce or nni, this parameter will let you change the Error Threshold, Poll Verify Timer, and Events Counter settings.

3.When Port Type is u-dte or nni, this parameter will let you change the Error Threshold, Poll Interval Timer, Events Counter, and Full Status Frequency.

4.Press <Enter> to select the desired Congestion Threshold percentages.

5.If connected to a user port, this displays user slot number and port (e.g. U1-2).

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ACS-FRS Card User Screens and Settings

STATE

The State setting determines whether the port is active or inactive. Set the State field to stdby (standby) for ports you are not using or have not yet configured. Or, set it to actv (active) for ports that are ready for use.

WAN/SRV

The WAN setting identifies the WAN link assigned to this port. You do not have to assign all ports on the same card to the same WAN link. You also don’t have to assign card ports to contiguous time slots of a WAN link. The default value is none.

TS

The Time Slot setting identifies the time slots on the WAN link when wan is selected in the previous setting. The ACS-FRS card can use many (up to 24 T1 or 31 E1) time slots on a single WAN port, in order to create a super-rate circuit for an individual FRS port. One or all time slots of a T1 or E1 link can be assembled for use by the FRS port, according to the speed requirements of the DTE.

You can assign time slots by pressing <Enter> and using the space bar to select and deselect the required number of time slots. These assignments do not have to be contiguous.

RATE

The Rate setting allows you to adjust the speed of the circuit according to the application requirements. The only speed available for ports C1to C4 is 64k (64 kbps). However, ports 1 to 64 can be set to either 56k or 64k.

PORT TYPE

The Port Type identifies the type of interface expected for this port. The selections are none, u-dce (User-to Network Interface), nni (Network to Network Interface), u-dte (User-to Terminal Equipment), and frad (Frame Relay Assembler/Dissembler).

LMI

The Local Management Interface setting allows you to select the protocol to be used by this port. The options are none, ansi (ANSI T1.617 Annex D), ccitt (ITU Q.933 Annex A), and lmi (Group of Four specification).

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ACS-FRS Card User Screens and Settings

FRS Card

DCE PARAM

The DCE Parameters setting will show n/a unless a Port Type of u-dce or nni is selected. Once set to enable, the user may choose from the following options:

Error Threshold (N392)

Poll Verify Timer (T391)

Events Counter (N393)

The Error Threshold (N392) counts the errors that will be tolerated during the cast number of events as set by the Events Counter before declaring the LMI link down. The number of errors options are 1 to 10. The value is input using the keyboard of the control terminal. The default is 3.

The Poll Verify Timer (T391) allows you to select the time interval (in seconds) that should elapse between “keep alive” messages sent from the corresponding DTE. The number of seconds options are 5 to 30. The default is 15 seconds.

The Events Counter (N393) allows you to select the window size for the number of events (frames) in which errors will be counted. If error threshold (N392) is exceeded within cast N393 frames, the link is declared down. The number of events counted are 1 to 10. The default is 4.

DTE PARAM

The DTE Parameters setting will show n/a unless a Port Type of u-dte or nni is selected. Once set to enable, the user may choose from the following options:

Error Threshold (N392)

Poll Interval Timer (T391)

Events Counter (N393)

Full Status Frequency (N391)

The Error Threshold (N392) counts the errors that will be tolerated during the cast number of events as set by the Events Counter before declaring the LMI link down. The number of errors options are 1 to 10. The value is input using the keyboard of the control terminal. The default is 3.

The Poll Verify Timer (T391) allows you to select the time interval (in seconds) that should elapse between “keep alive” messages sent from the corresponding DCE. The number of seconds options are 5 to 30. The default is 15 seconds.

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The Events Counter (N393) allows you to select the window size for the number of events (frames) in which errors will be counted. If error threshold (N392) is exceeded within cast N393 frames, the link is declared down. The number of events counted are 1 to 10. The default is 4.

The Full Status Frequency (N391) allows you to select the number of “keep alive” messages (see T391 above) that should elapse before the full status inquiry message is sent. The number of messages are 1 to 255. The default is 6.

ASYNC

This setting specifies whether a synchronous state's update messages are to be sent when changes on the link occur. If set to no, link updates are sent at regular intervals, in response to Full Status Requests.

CONG THRS

The Congestion Threshold allows you to select the amount (in percentage) that the internal Tx queues on the port must be filled before declaring this port is congested (this information is communicated by FECN and BECN flags). The options are 1 to 100.The default is 95.

Since DE (Discard-Eligibility) frames are not queued to the same extent as non-DE frames, DE-frames may be dropped when mixed with non-DE frames on the same port before congestion control is initiated.

To assure congestion control is initiated even for DE-frames under the conditions mentioned above, the TX threshold value must be reduced sufficiently to match the percentage DE-frames being buffered.

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ACS-FRS Card User Screens and Settings

FRS Card

2.3.2Frame Relay Endpoints Screen

You can have up to four frame relay endpoints (two for the actual endpoints of the PVC and two that can act as backup should the primary link fail). All frame relay endpoints are inventoried on the Frame Relay Endpoints Screen, and all endpoints must be defined from this screen before the user can provision the circuit.

Figure 2-3 shows a typical Frame Relay Endpoints Screen, which can be viewed by pressing “e” (Endp) in the ACS-FRS Card Main Screen. Table 2-3 lists the actions you can perform from the bottom line of this screen.

Figure 2-3.Typical Frame Relay Endpoints Screen

In Figure 2-3 above illustrates the frame relay endpoint screen for two voice circuits terminated on port 01, and 02 transported over port “C1” via the HSU to the remote device. Figure 2-3 also shows the three IP endpoints defined on C1 towards the remote device, and on C2 towards the IPR.

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ACS-FRS Card User Screens and Settings

 

Table 2-3. Frame Relay Endpoints Screen Actions

 

 

 

Action

 

Function

 

 

 

Refresh

 

Redraws the screen.

 

 

 

New

 

Adds new circuit endpoints for each of the Frame Relay ports

dElete

 

Deletes the highlighted endpoints. The system requires confirmation with a

 

 

yes/no question before deleting the circuit.

 

 

 

pgUp

 

Pages through the pages of Frame Relay endpoints from newest to oldest.

pgDn

 

Pages through the pages of Frame Relay endpoints from oldest to newest.

 

 

 

Main

 

Returns to the System Main Screen. If changes are made to settings and not

 

 

saved, you will be prompted to save or lose changes.

 

 

 

NAME

The Name setting allows you to identify each of the endpoints with a discrete name. This setting is case-sensitive, so a endpoint called “P101” is not the same as one called “p101.” Circuits are built using these names.

PORT

The Port number identifies the Frame Relay port used for this circuit. This information is input by the user from the keyboard. Valid entries are C1 to C4 and 1 to 64.

DLCI

The Data Link Connection Identifier is a unique number assigned by the carrier to this endpoint. The number must be between 1 and 996 (ansi or ccitt), or 1 and 1007 (lmi). The other numbers within the 1023 range are reserved.

BC(Kb)

The Bits Committed setting defines the threshold for the transmit rate (outgoing frames) where the card will make every effort to deliver the traffic to the subscriber. The time used to average rate is determined by the card by dividing the Committed Information Rate (CIR) by Bc. The number input must be between 0 and 2048.

BE(Kb)

The Bits Excessive setting defines the threshold for the transmit rate (outgoing frames) where the carrier will admit the frames into the network (in effect, this is the maximum transmission rate). Frames sent below this threshold but above the BC (KB) threshold are admitted into the carrier network with the DE (discard eligibility) bit set. If congestion occurs in the network, these frames are the first to be discarded. The options are 0 to 2048.

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ACS-FRS Card User Screens and Settings

FRS Card

CIR (Kbps)

The Committed Information Rate (in kbps) is the actual information rate contracted with the carrier. The options are 0 to 2048. CIR/Bc is used to calculate average data rate.

When CIR is set to 0, all frames forwarded will have the DE-bit set.

ALLOW RED

When Allow Red is set to yes transmit rate exceeding BC+Be will be forwarded if there is capacity available. When set to no forwarding will not be attempted.

PRI

The Priority field allows selection of priority 1-4. This field is only available for the ACS-FRS (881163) card. Default setting is priority “4”. When the user has installed ACS-FRS (8811) card the priority field will not be able to be edited and will show n/a.

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2.3.3FRS Circuits Screen

The FRS Circuits Screen allows you to identify PVC endpoints and alternate PVCs to serve as backups to the original endpoints if the main link fails. Endpoints must be inventoried on the PVC Endpoints Screen before they can be used to set up backup circuits. Figure 2-4 shows a typical Circuits Screen, and Figure 2-5 is an endpoint circuit example. Table 2-4 lists the actions you can perform from the bottom of this screen.

Figure 2-4.Typical Circuits Screen

Currently the FRS is limited to 128 circuits connecting 256 endpoints. The Integrated Access System is required to serve a maximum of 8 EBTS units, each having a total of 16 channels. Each EBTS can be address by three different IP addresses. Each IP address represents a specific type of service. Each of the services: signaling, messing, and NMS will be addressed EBTS by a different IP address. The IP router card will encapsulate IP Datagrams for each service with a unique DLCI value. The IP frames are self-contained in that channel information is embedded in the data of the datagram.

The total of 152 circuits will be required for both voice and IP circuits. Even though the maximum number of circuits for a single FRS card could be expanded to accommodate the needed number. When using two FRS cards, 64 circuits per card can be used as IP circuits after 64 circuits have been used as voice circuits.

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ACS-FRS Card User Screens and Settings

FRS Card

 

Table 2-4. FRS Circuits Screen Actions

 

 

Action

Function

 

 

Refresh

Redraws the screen.

 

 

New

Creates new circuit.

dEl

Deletes the highlighted circuit. You will be prompted with a yes/no question

 

prior to actual deletion of the circuits.

 

 

pgUp

Pages up through the circuits.

pgDn

Pages down through the circuits.

 

 

Perf

Brings up circuit performance data for the highlighted circuit. See the

 

Circuit Performance Data section of this chapter.

 

 

Status

Shows circuit status, as described above.

 

 

swA

Used for manually switching from primary endpoint A to alternate endpoint

 

A, and back.

 

 

swB

Used for manually switching from primary endpoint B to alternate endpoint

 

B, and back.

 

 

Main

Returns to the FRS Card Main Screen. If changes are made to settings and

 

not saved, you will be prompted to save or lose changes.

 

 

End Points

Frame Relay

Network

IAD #1

NY Prm

LA Prm

NY Alt

LA Alt

Router

IAD #2

Figure 2-5.Typical FRS Endpoint Circuit

STATE

The State setting shows the status of the circuit. The options are stdby and actv. This setting shows the administrative state of the circuit. The operational state of each of the endpoints of the circuit is shown in the STATUS column.

ENDP A

Endpoint A is the FRS port used to provide service to the primary end of the PVC. All of the endpoint names assigned on the PVC Endpoints Screen (discussed earlier) are eligible options.

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ENDP B

Endpoint B is the FRS port used to provide service to the secondary end of the PVC. All of the endpoint names assigned on the PVC Endpoints Screen (discussed earlier) are eligible options.

ALT A

Alternate Endpoint A is the FRS port used to provide backup service to the primary end of the PVC. All of the endpoint names assigned on the PVC Endpoints Screen (discussed earlier) are eligible options.

ALT B

Alternate Endpoint B is the FRS port used to provide backup service to the secondary end of the PVC. All of the endpoint names assigned on the Endpoint screen (discussed earlier) are eligible options.

SWCH A

The Switch A setting identifies the method used to switch from the primary Endpoint A to the Alternate Endpoint A. The options are manual and w/to (with time-out). If w/to is chosen, a second setting appears for the user to select the time-out period (in minutes) from 1 to 60.

In the event of a failure of the primary endpoint, a setting of manual allows the user to manually switch from primary to the alternate endpoint. When the primary endpoint is restored, the user must manually switch it back again.

In the event of a failure of the primary endpoint, a setting of w/to will automatically switch the PVC from primary to alternate. When the primary endpoint is restored, the system will automatically switch it back again after the predetermined time set by the user.

SWCH B

The Switch B setting identifies the method used to switch from the primary Endpoint B to the Alternate Endpoint B. The options are manual (pressing “b” from the bottom line of the screen), and w/to (with time-out). If w/to is chosen, a second setting appears for the user to select the time-out period (in minutes) from 1 to 60.

In the event of a failure of the primary endpoint, a setting of manual allows the user to manually switch from primary to the alternate endpoint if he chooses. When the primary endpoint is restored, the user must manually switch it back again.

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In the event of a failure of the primary endpoint, a setting of w/to will automatically switch the PVC from primary to alternate. When the primary endpoint is restored, the system will automatically switch it back again after the predetermined time set by the user.

STATUS

The Status column shows the status of the Primary and Alternate endpoints and the connection of the PVC. You cannot edit this field. The values are “A” (Primary A is active), “B” (Primary B is active), “U” (the connection is up), “a” (Alternate A is active), “b” (Alternate B is active) and “D” (connection is down). Only displays status when “S” (Status) is selected from the bottom of the screen.

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2.3.4FRS Circuit Performance Data Screen

The ACS-FRS card accumulates statistics that show performance characteristics of each circuit. To access the FRS Circuit Performance Data Screen, highlight one of the circuits on the FRS Circuits Screen and press “p” (Perf). Figure 2-6 shows a typical FRS Circuit Performance Data Screen, and Table 2-5 lists the actions you can perform from its bottom line.

The circuit performance data is kept in 15-minute (900 seconds) time increments for a total of 96 periods (24 hours). Each screen shows the current 15 minute segment and the past 12 periods with totals at the bottom of the column. Press “d” to page backward through the previous 96 periods, or “u” to page forward through these periods. After each period, the oldest 15-minute segment (from exactly 24 hours ago) is discarded. Since information is not updated on screen in real time, you must press “r” (Refresh) periodically to obtain up-to-date statistics for the current period.

Figure 2-6.Typical Circuit Performance Data Screen

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Table 2-5. Circuit Performance Data Screen Actions

 

 

 

Action

 

Function

 

 

 

Refresh

 

Since performance statistics are not updated on screen in “real” time, the

 

 

refresh key must be pressed to obtain updated performance figures.

 

 

 

Clear

 

Clears all performance statistics for the highlighted port.

 

 

 

PgUp

 

Pages up through the 96 time segments.

PgDn

 

Pages down through the 96 time segments.

ConG

 

Brings up the Circuit Congestion Data Screen. See the Circuit Congestion

 

 

Data section of this chapter.

 

 

 

Main

 

Returns to the Circuits Screen.

 

 

 

AB FRAMES

The AB FRAMES counter shows the total number of frames sent from endpoint A to endpoint B.

BA FRAMES

The BA FRAMES counter shows the total number of frames sent from endpoint B to endpoint A during the time period.

AB BYTES

The AB BYTES counter shows the total number of bytes sent from endpoint A to endpoint B during the time period.

BA BYTES

The BA BYTES counter shows the total number of bytes sent from endpoint B to endpoint A during the time period.

AB DRP

The AB DRP counter shows the total number of frames dropped that were sent from endpoint A to endpoint B during the time period.

BA DRP

The BA DRP counter shows the total number of frames dropped that were sent from endpoint B to endpoint A during the time period.

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STATUS

The Status column shows the status of the selected circuit during the 15-minute intervals. The Status values are A or a (capital A means endpoint A was switched from alternate to primary and lower-case a means the endpoint A was switched from primary to alternate); B or b (capital B means endpoint B was switched from alternate to primary, lower-case b means endpoint B was switched from primary to alternate); D (connection was down during that period); and S (circuit was placed in standby state during that period).

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2.3.5Circuit Congestion Data Screen

The ACS-FRS card also accumulates statistics that show you the congestion characteristics of each of the circuits. To access the Circuit Congestion Data Screen, press “g” (conG) in the FRS Circuit Performance Data Screen. Figure 2-7 shows a typical Circuit Congestion Data Screen, and Table 2-6 lists the actions you can perform from its bottom line.

The data on this screen is kept in 15-minute (900 seconds) time increments for a total of 96 periods (24 hours). Each screen shows the current 15 minute segment and the twelve past periods with totals at the bottom of the column. Press “d” (pgDn) to scroll backward through the previous 96 periods, or “u” (pgUp) to scroll forward through these periods. After each period, the oldest 15-minute segment (from exactly 24 hours ago) is discarded. Since information is not updated on screen in real time, you must press “r” (Refresh) periodically to obtain up-to-date statistics for the current period.

Figure 2-7. Typical Circuit Congestion Data Screen

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Table 2-6. Circuit Congestion Data Screen Actions

 

 

 

Action

 

Function

 

 

 

Refresh

 

Since performance statistics are not updated on screen, you must press “r

 

 

to obtain updated performance figures.

 

 

 

pgUp

 

Pages up through the 96 time segments.

 

 

 

pgDn

 

Pages down through the 96 time segments.

A->b

 

Selects the direction of the congestion data.

B->a

 

Selects the direction of the congestion data.

 

 

 

Main

 

Returns to the Circuit Performance Data Screen.

 

 

 

GREEN FR

The Green Frames counter shows the total number of frames sent on the circuit that fell within the Committed Information rate contracted with the carrier during the time period.

DROP

The first DROP shows the number of Green Frames that were dropped by the card during the time period.

YEL FR

This counter shows the total number of frames on the circuit that exceeded the Bc rate but were within the Be rate assigned to the endpoint during the time period.

DROP

The second DROP shows the number of Yellow Frames that were dropped by the card during the time period.

RED FR

This counter shows the total number of frames on the circuit that exceeded the Be rate assigned to the endpoint during the time period.

DROP

The third DROP shows the number of Red Frames that were dropped by the card during the time period.

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FECN

The Forward Error Congestion Notification counter logs the number of frames with the FECN bit set by the system. This flag tells you that congestion avoidance procedures should be initiated.

BECN

The Backward Error Congestion Notification counter logs the number of frames with the BECN bit set by the system. This flag tells you that congestion avoidance procedures should be initiated.

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2.3.6Port Performance Data Screen

The ACS-FRS card also accumulates statistics that show you the performance characteristics of each active port. To address the Port Performance Data Screen, highlight one of the 68 ports on the ACS-FRS Card Main Screen and press “p” (Perf). This will access the Port Performance Data Screen associated with the selected port. Figure 2-8 shows a typical Port Performance Data Screen, and Table 2-7 lists the actions you can perform from its bottom line.

The data on this screen is kept by 15-minute (900 seconds) time increments for a total of 96 periods (24 hours). Each screen shows the current 15 minute segment and the past 12 periods with totals at the bottom of the column. Press “d” (pgDn) to page backward through the previous 96 periods, or “u” (pgUp) to page forward through these periods. After each period, the oldest 15-minute segment (from exactly 24 hours ago) is discarded. Since information is not updated on screen in real time, you must press “r” (Refresh) periodically to obtain up-to-date statistics for the current period.

Figure 2-8. Typical Port Performance Data Screen

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Table 2-7. Port Performance Data Screen Actions

 

 

 

Action

 

Function

 

 

 

Refresh

 

Since performance statistics are not updated on screen in “real” time, the

 

 

refresh key must be pressed to obtain updated performance figures.

 

 

 

Clear

 

Clears all performance data for the highlighted port.

 

 

 

pgUp

 

Scrolls up through the 96 time segments.

pgDn

 

Scrolls down through the 96 time segments.

Main

 

Returns to the System Main Screen.

 

 

 

PORT

The Port setting shows the port number associated with the performance statistics on this screen. This was the port highlighted on the Main screen when the “P” key was pressed. The FRS card has a maximum of 68 ports.

FRAME Rx

The Frame Received column tabulates the total number of frames received during the 15 minute period.

FRAME Tx

The Frame Transmitted column tabulates the total number of frames transmitted during the 15 minute period.

OCTETS Rx

The Octets Received column tabulates the total number of bytes received during the 15 minute period.

OCTETS Tx

The Octets Transmitted column tabulates the total number of bytes transmitted during the 15 minute period.

DRPRx

The Dropped (frame) Received column tabulates the total number of frames dropped on port while being received.

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