[OpenSIPS-Users] Call control reporting no dialog

[Doug]

Hi All,

I've been messing around with a new type of topology - using OpenSIPS in 
the front handling media-proxy and call_control, and then passing the 
call onto Sippy B2BUA for outbound routing and topology hiding.

The calling part works great - I receive an invite to OpenSIPS, setup 
mediaproxy and then t_relay the call to Sippy B2BUA (which is running on 
port 5070 on the same machine as OpenSIPS). - I simply call 
rewritehostport("172.0.20.11:5070); and then t_relay.

The problem I'm having is I want to implement call_control for managing 
prepaid airtime, however, when I call call_control(), the system works 
fine, CDRTool returns the amount of time I can talk for, but then when 
OpenSIPS sends the call to Sippy via t_relay, the following message occurs:

WARNING:call_control:postprocess_request: dialog to trace controlled 
call was not created. discarding callcontrol in the OpenSIPS log, and 
then in the call_control log I get the following:
call-control[6319]: Call id ZmQwODdkZWI3ZWU1Mzc2YTkzZGVhYjQzODY5MzM2NGE. 
of doug at 172.0.20.11 to sip:0716054314 at 172.0.20.11 canceled by user

I'm assuming the second error is because the dialog was not created (I 
don't believe so, as if the dialog wasn't created then technically my 
call shouldn't have worked), but anyway, I guess I'm looking for some 
pointers on how to check out why call_control feels the dialog is not 
being created?

As a note, I thought maybe it was because I was rewriting the RURI, so I 
removed that and just set $du before calling t_relay, but this had the 
same results.

I don't believe its a permission error as the mi_datagram of OpenSIPS is 
set to 666 and mediaproxy uses the same mi_datagram which is working 
perfectly.

The only thing really different between this new setup and a current 
network I have in place is the current network is using lcr.so for 
routing, and this new one I'm working on is using rewritehostport - not 
sure if this makes a big difference as from what I can tell next_gw() 
simply rewrites the RURI anyway.

Oh, I have also tried using create_dialog in the INVITE. I'm also using 
t_newtrans() in the INVITE section to handle retransmissions.

Any advice will be greatly appreciated.

Thanks
Doug