Low volume in incoming IAX2 calls

Asterisk Asterisk Support
1

Good morning,

I’m experimenting low audio in the incoming calls over an IAX2 trunk. In intranet SIP calls, incoming calls over a SIP Trunk, and outbound calls over the same IAX2 Trunk the audio is clear in both directions. However, in the incoming calls the audio is low. We’ve tried different handsets, and the issue keeps on happening. Is there a way it can be increased? Please find below the contents of the iax.conf file (user, password and host have been ommited for security purposes).

Thanks in advance

carlos

[general]
register => user:password@hostIP
bindaddr=0.0.0.0

[provider]
type=friend
host=hostIP
username=user
secret=password
auth=plaintext,md5,rsa
context=iax2-incoming
dtmfmode=rfc2833
disallow=all
allow=g729
allow=gsm
insecure=port,invite
qualify=yes
trunk=no
nat=yes
trustrpid=yes
sendrpid=yes
calltokenoptional=0.0.0.0/0.0.0.0
requierecalltoken=no
maxcallnumbers=16381
2

IAX trunks are digital and therefore pass digital audio at the same level at which it was received. Look upstream for your problem.

3

Hello.

You may use function VOLUME.