[cisco-voip] Early media with cisco 5400

[Laurent Schweizer]

Hello,

 

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 don't send RTP traffic, so the RTP
proxy can't start the relay (he wait 1 RTP packet to detect the
publicIP/port)

 

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

 destination-pattern 2T

 progress_ind setup enable 3

 progress_ind progress enable 8

 translate-outgoing called 1

 voice-class codec 7

 session protocol sipv2

 session target ipv4:203.40.5.100

 dtmf-relay rtp-nte

 no vad

!

 

 

gateway

!

sip-ua

 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
calls:

 

http://pastebin.com/m26a0e423

 

 

 

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