VVX 201 into old Asterisk

[Anonymous]

We just got a number of these phones to replace some aging ones that run into a pretty old Asterisk server (legacy, has a ISDN trunk).  Asterisk 1.4.22-2 to be exact.  We have just put in the basic SIP details and everything registers correctly.  Had to bump G.711U/A to the top of the codecs as it is all that is supported.  Works, but the voice of the caller (on the 201) is very quiet when using the handset.  They basically have to shout.  All the other SIP handsets have worked fine for years and the speaker phone on the 201 seems to work too.  I have tried messing with the various voice.gain.tx.analog settings but none seem to have any effect and it is unclear if they even apply to the 201 handset.  Any suggestions as otherwise we may have to return them? 

[MrT17]

Hi,

Please check;

ISDN file;

vi /etc/asterisk/chan_dahdi.conf

rxgain=0.0

(Change: 1.0 - 1.5 - 2.0)

txgain=0.0

(Change: 1.0 - 1.5 - 2.0)

[Anonymous]

Thanks, will do.  However this does not effect just the ISDN trunks.  The calls are quiet even between the extensions - to mixed older non Polycom handsets.

[Anonymous]

I should say to BOTH older non Polycom handsets and other VVX201s it is almost inaudibly quiet using the handset.  

[Anonymous]

Nothing?  Sadly will have to return all the handset as nothing I have been able to do on the handset side or Asterisk side seems to resolve this issue.