Server Alarms - Avaya Support

Communication Manager Maintenance Object Repair Procedures
TN464GP/TN2464BP UDS1 Circuit Packs with
Echo Cancellation
The TN464GP and TN2464BP UDS1 circuit packs feature an integrated echo canceller. Echo
cancellation is a Software Right-To-Use feature that can be turned on as needed. Echo
cancellation supports channels carrying voice and is not intended for channels that support
data. The TN464GP/TN2464BP have the capability to detect modem tone and turn off echo
cancellation accordingly for the duration of a data call. Echo cancellation on the TN464GP/
TN2464BP is administrable per channel. The echo cancellation circuitry on a given TN464GP/
TN2464BP is driven by administrable parameters.
The TN464GP/TN2464BP circuit packs are intended for use with ATM, IP, wideband, or other
complex services which are likely to have problems with echo.
Echo cancellation on a TN464GP/TN2464BP is a right-to-use feature that is activated by means
of the License File. Echo cancellation is enabled on the System-Parameters Customer-Options
screen. The Maximum Number of DS1 Boards with Echo Cancellation field on the
System-Parameters Customer-Options screen indicates the number of DS1 boards on which
echo cancellation is activated for a specific customer.
The DS1 Circuit Pack screen for the TN464GP/TN2464BP circuit packs has fields to support
echo cancellation: Echo Cancellation, EC Direction, and EC Configuration. The Echo
Cancellation field appears when the Echo Cancellation feature is activated on the
System-Parameters Customer Options screen. The EC Direction and EC Configuration fields
appear when the DS1 Echo Cancellation field is enabled.
● EC Direction determines the direction from which echo will be eliminated, ether inward or
outward.
● EC Configuration is the set of parameters used when cancelling echo. This information is
stored in firmware on the UDS1 circuit pack.
Echo cancellation is turned on or off on a per trunk-group basis using change trunk-group.
If the TRUNK GROUP field, DS1 Echo Cancellation is y, echo cancellation is applied to every
TN464GP/TN2464BP trunk member in that trunk group. The echo cancellation parameters
used for a given trunk member are determined by the Echo Cancellation Configuration Number
administered on the DS1 Circuit Pack screen for that specific trunk’s board.
Note: It
Note:
is not necessary to busyout a port or trunk group to change the DS1 Echo
Cancellation field on the Trunk Group screen. However, the modified setting does
not take effect until one of the following occurs:
● Port is busied out/released
● Trunk Group is busied out/released
● Test trunk group is executed
● Periodic maintenance runs
1382 Maintenance Alarms for Avaya Communication Manager, Media Gateways and Servers