[Asterisk-Users] No "native bridge" on outbound SIP channels

Eric Bishop asterisk.eric at gmail.com
Sat Jan 14 23:00:28 MST 2006


Hi all,

I have a Cisco 1760 gateway and and Cisco 7960 VoIP phone running via
Asterisk. Both are running g711A codecs and SIP. On inbound calls I get a
native bridge, however on outbound calls I never get a native bridge. With
other SIP gateways I do get a native bridge on the outbound call. My
sip.conf is as follows:

[cisco1760]
type=friend
context=incoming
host=192.168.0.55
insecure=yes
nat=no
canreinvite=no
dtmfmode=rfc2833
disallow=all
allow=alaw

I have also confirmed while on an outbound calls that both are using the
exact same codecs. sip show channels shows

pbx*CLI> sip show channels
Peer             User/ANR    Call ID      Seq (Tx/Rx)  Form  Hold     Last
Message
192.168.0.55         123456789 4ea2e1314cd  00102/00000  alaw  No       Tx:
ACK
192.168.0.58     200         0013c427-f4  00101/00102  alaw  No       Rx:
ACK
2 active SIP channels


Anyone have an idea what's going on?
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