Have you configured;
 
_ sip.conf_
 
..add this line:
 
dtmfmode=inband
 
..also you have uncomment the right line that matches your dhcp setup:
 
localnet=192.168.0.0/255.255.0.0; All RFC 1918 addresses are local networks
;localnet=10.0.0.0/255.0.0.0 ; Also RFC1918
;localnet=172.16.0.0/12     ; Another RFC1918 with CIDR notation
;localnet=169.254.0.0/255.255.0.0 ;Zero conf local network
Worked for me ;)

/ Stig Henning
 
 
----- Original Message -----
Sent: Friday, September 10, 2004 2:32 PM
Subject: [Asterisk-Users] No DTMF or Audio

I have built latest Asterisk w/ OpenH323 channel driver. We have a SIP softphone registered to the Asterisk. We can place outbound calls from the SIP phone to the PSTN via OpenH323 connection to our gatekeeper. Everything works okay - DTMF and Audio...
But in the reverse - if we call from a cellphone or landline the PSTN number we can get the SIP phone to ring - we answer and can hear the originating party - but the SIP softphone is not able to transmit DTMF or audio back to the PSTN...
 
I'm not sure if this is an issue w/ converting the signal in asterisk i.e. SIP to H323 -- or if a problem in the codec or what?
The codec is G711uLaw..
 
Help - thanks
 
Robert A. Huddleston, KF4BYY
Cavalier Telephone LLC.
804.422.4401
 
 


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