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Cisco BTS 10200 Softswitch

Early ACM Timer Feature

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Configurable ACM Timer Based On Incoming Trunk Group

OVERVIEW

CONFIGURING

Turning the ACM Timer On or Off


Setting the Value For the ACM Timer

OPERATING

Billing Fields

Measurements

Announcements

Command Responses

Tones

Cause Codes

Recoverable and Non-Recoverable Error Codes

TROUBLESHOOTING

Events and Alarms

REFERENCES

CLI Reference Guide

New and Modified Object Commands

Modified TRUNK GROUP Table

Related Documents


Configurable ACM Timer Based On Incoming Trunk Group

Feature History

Release
Modification

Release 4.4

This feature was introduced.


This document describes the configurable ACM timer feature and contains the following sections.

•OVERVIEW

•CONFIGURING

•OPERATING

•TROUBLESHOOTING

•REFERENCES

OVERVIEW

The originating carrier allocates a certain amount of time for wholesale carriers to find a destination for a call before route advancing and attempting the call with another provider. In calls to some destinations, it takes a longer amount of time than allocated to set up the call.

This feature introduces the ability for the Cisco BTS 10200 Softswitch to generate an ANSI SS7 ISUP Address Complete Message (ACM) for calls that terminate to remote destinations that require longer times to identify and seize an outgoing trunk. A configurable timer starts as soon as the IAM is received and triggers the sending of an ACM back to the originating switch after the timer expires, if the BTS has not received an ALERT message from the terminating switch.

If there is interworking with continuity testing, the activation of this timer will be postponed until the Continuity Test result message (COT) is received.

This functionality is intended for the transit carrier market and should be used with trunk groups carrying only transit calls. Trunk groups carrying traffic for local subscribers should not utilize this feature.

At this time, this feature is only applicable to SS7 trunk groups configured with the ANSI ISUP protocol.

CONFIGURING

This section explains how to perform the following tasks:

•Turning the ACM Timer On or Off

•Setting the Value For the ACM Timer

Note These tasks include examples of CLI commands that illustrate how to provision the specific feature. Most of these tables have additional tokens that are not included in the examples. For a complete list of all CLI tables and tokens, refer to the Cisco BTS 10200 Softswitch Command Line Interface Reference Guide.

Turning the ACM Timer On or Off

The ACM timer is off by default and is turned on/off with the send_early_bkwd_msg token in the Trunk Group table. Enter the following CLI command to turn on the ACM timer: 

CLI>change trunk-grp ID=101; send_early_bkwd_msg=Y;


Setting the Value For the ACM Timer

The length of the ACM timer is controlled by the value of the early_bkwd_msg_tmr token in the Trunk Group table. Acceptable values are 0 - 30 seconds, and the default value is 5 seconds. To set the value of the ACM timer, use a CLI command similar to the following: 

CLI>change trunk-grp ID=101; early_bkwd_msg_tmr=20;

OPERATING

This section explains how this feature affects the following operational areas:

•Billing Fields

•Measurements

•Announcements

•Command Responses

•Tones

•Cause Codes

•Recoverable and Non-Recoverable Error Codes

Billing Fields

There are no new, modified, or deleted billing fields related to the features described in this document.

Note See the Cisco BTS 10200 Softswitch Billing Guide for detailed information regarding billing fields.

Measurements

There are no new, modified, or deleted measurements related to the features described in this document.

Note See the Measurements section of the Cisco BTS 10200 Softswitch Operations and Maintenance Guide for a complete list of all traffic measurements.

Announcements

There are no new, modified, or deleted announcements related to the features described in this document.

Note See the Announcements section of the Cisco BTS 10200 Softswitch Provisioning Guide for details on the announcement files and announcement provisioning.

Command Responses

There are no new, modified, or deleted command responses related to the features described in this document.

Note See the Command Responses section of the Cisco BTS 10200 Softswitch Command Line Interface Reference Guide for a complete list of system command responses.

Tones

There are no new, modified, or deleted command responses related to the features described in this document.

Note See the Tones section of the Cisco BTS 10200 Softswitch Operations and Maintenance Guide for a complete list of tones.

Cause Codes

There are no new, modified, or deleted command responses related to the features described in this document.

Note See the Cause Codes section of the Cisco BTS 10200 Softswitch Provisioning Guide for a complete list of cause codes.

Recoverable and Non-Recoverable Error Codes

There are no new, modified, or deleted error codes related to the features described in this document.

Note See the Error Codes section of the Cisco BTS 10200 Softswitch Operations and Maintenance Guide for a complete list of error codes.

TROUBLESHOOTING

This section lists the Events and Alarms that are new or revised (or deleted) as a result of this feature.

Events and Alarms

There are no new, modified, or deleted events or alarms related to the features described in this document.

Note See the Events and Alarms section of the Cisco BTS 10200 Softswitch Operations and Maintenance Guide for details about causes and corrective actions.

REFERENCES

The following sections provide references related to the Early ACM Timer feature.

CLI Reference Guide

This section describes new or modified CLI command, tokens, or values introduced with the implementation of the features covered in this document.

Note All existing commands used with this feature are documented in the Cisco BTS 10200 Softswitch Command Reference Guide.

Caution This section describes only the information that is new for the feature covered in this document. Tables, tokens, and values that remain unchanged are not included here.

New and Modified Object Commands

Configuring this feature includes provisioning the following modified object:

•Modified TRUNK GROUP Table

Note An asterisk preceding a token name in the following tables indicates that the token is mandatory.

Modified TRUNK GROUP Table

Two new tokens, send_early_bkwd_msg and early_bkwd_msg_tmr, are added to the TRUNK GROUP table to support the feature described in this document.

Examples 


change trunk-grp id=101; call-agent-id=CA146; tg-type=ss7; send-early-bkwd-msg=Y; 
early-bkwd-msg-tmr=20;

Syntax Description

send-early-bkwd-msg

When set to Y, the early backward message timer will be started, and an early message will be sent when it expires.

CHAR(1):Y/N (Default=N)

early-bkwd-msg-tmr

The timer value, in seconds, for the early backward message timer.

INTEGER:0-30 (Default=5).


Related Documents

Related Topic
Document Title

Release Notes, Release 4.4

Cisco BTS 10200 Softswitch Release Notes for Release 4.4

System Overview

Cisco BTS 10200 Softswitch System Description, Release 4.4

Provisioning

Cisco BTS 10200 Softswitch Provisioning Guide, Release 4.1, 4.2, and 4.4

Operations and Maintenance

Cisco BTS 10200 Softswitch Operations and Maintenance Guide, Release 4.1, 4.2, and 4.4

CLI Commands

Cisco BTS 10200 Softswitch Command Line Interface Reference Guide, Software Releases 4.1, 4.2, 4.4.1, and 4.4

Operations and Maintenance

Cisco BTS 10200 Softswitch Operations and Maintenance Guide