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Knowledge Base

U1910 Volume Is Low or High

Publication Date:  2013-10-29  |   Views:  134  |   Downloads:  0  |   Author:  z00528651  |   Document ID:  EKB1000035653


Issue Description

The volume is low or high in the line.

Alarm Information


Handling Process

Step 1 See LMT-based Login and Configuration to log in to the LMT and access the command tree
configuration mode.
Enter the command in the complete command input area, and click Run.
Step 2 If an IP Phone is used, press the arrow keys to adjust the volume to check whether the fault is
If the fault persists, go to the next step.
Step 3 If an IAD is used, change the outgoing sending and receiving gain to check whether the fault is
rectified. For example, the IAD132E(T).
1. Run the display pstnport attribute n command to view the sending and receiving gain.
TERMINAL>display pstnport attribute 0
Port type Gain( dB ) Pulse Dial Polarity
0 FXS Sending gain 0, receiving gain -2 Disabled Reversal
2. Run the dsp send-gain <2-64> command (sending gain) and dsp recv-gain <2-64>
command (receiving gain) to change gains.

Root Cause

The device gain is improper.