[c-nsp] cisco 2600 as sip gw, no ringing tone on call frowarding

[Schweizer Laurent]

Hello I use a cisco 2600 as sip gw, and i have an error when i make call
forwarding, the caller do not receive the ringing tonne.

 

example:

 

the GW receive a call from the pstn (caller1), and he forward this call to
the proxy.

on the proxy a call forwarding is activated to a mobile phone, so the proxy
rewrite the sip uri, and the call is forwarded to the same GW.

the problem is that caller1 never receive the ringing tone. I see that the
GW correctly send and receive the 183 Session Progress message but he never 

send this on the pstn.

 

 

 

 8.313239 1x.x.x.x70 -> 1x.x.x.x13 SIP/SDP Request: INVITE
sip:4202371 at spadatel.org:5060, with session description

  8.315617 1x.x.x.x13 -> 1x.x.x.x70 SIP Status: 100 trying -- your call is
important to us

  8.316326 1x.x.x.x13 -> 1x.x.x.x14 SIP/SDP Request: INVITE
sip:0244203036 at sip.spadatel.org:5060, with session description

  8.318357 1x.x.x.x14 -> 1x.x.x.x13 SIP Status: 100 trying -- your call is
important to us

  8.318876 1x.x.x.x14 -> 1x.x.x.x70 SIP/SDP Request: INVITE
sip:0244203036 at 1x.x.x.x70:5060, with session description

  8.386719 1x.x.x.x70 -> 1x.x.x.x14 SIP Status: 100 Trying

 15.636038 1x.x.x.x70 -> 1x.x.x.x14 SIP/SDP Status: 183 Session Progress,
with session description

 15.636451 1x.x.x.x14 -> 1x.x.x.x13 SIP/SDP Status: 183 Session Progress,
with session description

 15.637680 1x.x.x.x13 -> 1x.x.x.x70 SIP/SDP Status: 183 Session Progress,
with session description

 15.662967 1x.x.x.x70 -> 1x.x.x.x13 SIP Request: PRACK
sip:1x.x.x.x13:5060;ftag=A5A7C-2313;lr=on

 15.663123 1x.x.x.x13 -> 1x.x.x.x70 SIP Request: PRACK
sip:0244203036 at 1x.x.x.x70:5060