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U1910 Volume Is Low or High

Publication Date:  2013-10-29 Views:  58 Downloads:  0
Issue Description
The volume is low or high in the line.
Alarm Information
none
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
rectified.
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
V21TLen
(s)
------------------------------------------------------------------------
0 FXS Sending gain 0, receiving gain -2 Disabled Reversal
0
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.
Suggestions
none

END