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Low speech in analog CO trunks
Posted: 02 Feb 2005 04:34
by lobhugo
Hi
Can the speech quality in NDDI type analog trunk card be boosted.I am facing a problem of very poor speech quality.
Tks
Poor speech quality
Posted: 02 Feb 2005 10:25
by patmul39
First check Trunk COS in the created trunk. Then go to External Services / Trunk COS (same as the trunk cos in the trunk group) and modify the Line Type (set to Long Line as this will increase line gain). You must reset the NDDI board afterwards. Play around with the Long Line options.
Posted: 02 Feb 2005 11:24
by vad
Check line quality first. Connect analog set on th line (without PBX) and check audio. If you have bad line PBX cannot improve quality.
If with direct connection OK - Specific telephone services - Adjust audio gain=yes. You will have possibility adjust level in handset with key "+", "-".
Posted: 04 Feb 2005 09:59
by huni
sometimes linereversing also works !!!1