[asterisk-users] SIP Dial Command to a non-Asterisk url

[Gavin Henry]

Dear All,

I have a tiny dial plan like:

[testing]
exten => 454,s,Ringing()
exten => 454,n,Wait(4)
exten => 454,n,Dial(SIP/slee at 192.168.45.183:5605,10)
exten => 454,n,Hangup


This connects fine when I dial 454 from any extension in my system,
but there is never any audio?

Where can I start to look for debugging this? It's all internal so no
NAT problems?

Thanks,

Gavin.