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Frame Slip Alarms and Noises Occur When the eSpace U1910 Connects to a Device Through a T1 Trunk

Publication Date:  2019-07-28 Views:  160 Downloads:  0

Issue Description

When the eSpace U1910 connects to a device through a T1 trunk, a lot of frame slip alarms and noises occur.

Alarm Information


Handling Process

Step 1 Check the E1 jumper caps on the CVP board and remove all jumper caps. For details about the jumper locations, see the product installation manual.
Step 2 Run the show mrsparas command to check whether TdmCodec is set to U_LAW. If no, set this parameter to U_LAW.
Step 3 If the fault persists, contact the service support.

Root Cause

The possible causes are as follows:
 E1 jumper caps are not removed on the CVP board, affecting the E1 working mode.
 The MRS parameter TdmCodec is not set to U_LAW.