Appendix A Cisco 3825 Mobile Wireless Edge Router RAN-O Command Reference

gsm-abis jitter

gsm-abis jitter

Sets the amount of transmit jitter delay for the GSM-Abis interface.If the transmit jitter is set to 4 ms, data received on the backhaul with a time equal to 0 milliseconds will be stored in the jitter buffer and transmitted with a time equal to 4 milliseconds. The transmit jitter buffer allows some amount of jitter in the arrival of data on the backhaul to be tolerated without introducing errors into the stream of data.

To set the jitter, use the gsm-abis jitter Interface configuration command.

 

 

 

gsm-abis jitter ms

 

 

 

 

Syntax Description

 

ms

Sets the number of milliseconds for the jitter. The default value is 4 ms.

 

 

 

 

 

 

 

Defaults

 

There are no default settings or behaviors.

Command Modes

Command History

Interface configuration

ReleaseModification

12.4(2)MR

This command was introduced.

 

 

Examples

 

The following example shows how to set the jitter level to 8 ms:

 

 

 

Router(config)# interface Serial10/1/0:0

 

 

 

Router(config-if)# no ip address

 

 

 

Router(config-if)#encapsulation gsm-abis

 

 

 

Router(config-if)# load-interval 30

 

 

 

Router(config-if)#gsm-abis local 10.10.10.2 6661

 

 

 

Router(config-if)#gsm-abis remote 10.10.10.1 5553

 

 

 

Router(config-if)# gsm-abis jitter 8

 

 

 

Router(config-if)# no keepalive

 

 

 

 

Related Commands

 

Command

Description

 

 

 

 

 

 

 

 

gsm-abis congestion abate

Sets the congestion abatement detection level at which the remote

 

 

 

 

router will stop suppressing timeslots because congestion has been

 

 

 

 

alleviated.

 

 

 

 

 

 

 

 

gsm-abis congestion critical

Defines the critical timeslots that are exempt from suppression

 

 

 

 

during congestion onset.

 

 

 

 

 

 

 

 

gsm-abis congestion enable

Sets the congestion detection algorithm to monitor the transmit

 

 

 

 

jitter buffer and to send congestion indicator signals to the remote

 

 

 

 

when congestion is detected.

 

 

 

 

 

 

 

 

gsm-abis congestion onset

Sets the congestion onset detection level at which the remote router

 

 

 

 

will start suppressing all timeslots that are not defined as critical in

 

 

 

 

an effort to alleviate the congestion.

 

 

 

 

 

 

 

 

 

 

 

 

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

 

 

 

 

 

 

 

 

 

OL-15667-03

 

 

 

 

A-29

 

 

 

 

 

 

 

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Cisco Systems 3825 manual Gsm-abis jitter, Following example shows how to set the jitter level to 8 ms