laurent.schweizer at peoplefone
Jul 25, 2009, 4:08 PM
Post #2 of 2
I do a test without RTP proxy to check if itís the problem.
To do this test I use same cisco GW for the incoming and outgoing call, and
I have exactly the same problem.
De : Laurent Schweizer [mailto:laurent.schweizer [at] peoplefone]
Envoyť : samedi 25 juillet 2009 18:01
ņ : cisco-voip [at] puck
Objet : [cisco-voip] Early media with cisco 5400
I have a cisco 5400 and I have a problem with early media.
When I receive a call from PSTN to voip and then this call is forwarded to a
PSTN destination via an other GW, this other GW send me back a 183 Session
in progress with SDP .
The problem is that the GW is not transferring the voice to the PSTN or as
I use a RTP proxy, maybe the cisco AS5400 donít send RTP traffic, so the RTP
proxy canít start the relay (he wait 1 RTP packet to detect the
When the user answer , the tha call is OK in both way.
any idea how to solve this ?
In my config I have set:
voice call send-alert
voice rtp send-recv
dial-peer voice 2 voip
progress_ind setup enable 3
progress_ind progress enable 8
translate-outgoing called 1
voice-class codec 7
session protocol sipv2
session target ipv4:188.8.131.52
nat symmetric check-media-src
retry invite 8
retry bye 2
retry cancel 2
timers expires 120000
link to 2 calls, first only 183 session in progress and secondl, an answered