[Serusers] 183 and no ringback tone

[steve]

Hi,
On Cisco Gws any issues I have had I have been able to resolve by adding
progress_ind to the dial peers.

Below are examples from one of our GWs:

dial-peer voice 22 pots
 description *** Extensions beginning 22 ***
 application session
 destination-pattern 22..
 progress_ind setup enable 3
 progress_ind alert enable 8
 progress_ind progress enable 8
 direct-inward-dial
 port 1/0:15
 forward-digits all 

dial-peer voice 34 voip
 description *** Extensions beginning 34 ***
 destination-pattern 34..
 progress_ind setup enable 3
 progress_ind alert enable 8
 progress_ind progress enable 8
 session target ipv4:10.96.2.130
 dtmf-relay h245-signal
 no call fallback



I think you can disable media cut through on Cisco devices, this would
change your 183 to 180 without a hack. 183 v 180 just means that RTP is
already being sent, AFAIK

Hope this helps....

> -----Original Message-----
> From: serusers-bounces at lists.iptel.org 
> [mailto:serusers-bounces at lists.iptel.org] On Behalf Of Andreas Granig
> Sent: Tuesday 11 May 2004 10:25
> To: serusers at lists.iptel.org
> Subject: [Serusers] 183 and no ringback tone
> 
> Hi,
> 
> following situation: a local user sets a call forward to a 
> PSTN number. 
> When someone from PSTN is calling this user, the call is 
> routed back to PSTN via the same or another gateway (doesn't 
> matter). The problem is, that the caller doesn't hear a 
> ringback tone (because of the 183 this should be generated 
> out of the rtp stream, afaik).
> The Gateways are Cisco 5300.
> 
> When I call this user from a Cisco ATA and get forwarded to 
> PSTN via the GW, I hear the ringback tone, so I think this 
> might be a problem between the Gateways!?
> 
> I've attached the full sip trace of the call. I think you'll 
> also need the RTP stream, but that isn't available, sorry. 
> Btw, it doesn't help to
>   force the rtp stream over the SER's machine with rtpproxy, 
> same problem here. ACLs on the Gateways are OK.
> 
> A hack would be to rewrite the 183 to 180, but I'd like to 
> avoid such *really ugly* hacks :o)
> 
> Does anyone know this problem?
> 
> Regards,
> Andy
> 
> 
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