[cisco-voip] FXO Ports H323 Gateway

[Granger, Simon]

All

I am looking for a little help, We have and FXO port in a Cisco 1861 router. When someone phones the FXO port, it rings on the IP phone, but as soon as the phone is answered the call is disconnected / dropped with click pretty much instantly.

This is the same for inbound and outbound, I cannot find anything to explain why.

I have pasted some config below, but can provide more if needed.

Any help would be most appreciated.



Port Config

voice-port 0/1/1
 supervisory disconnect dualtone pre-connect
 supervisory answer dualtone
 connection plar opx 85213299
 impedance complex2
 bearer-cap Speech
 station-id name Regus
 station-id number 85210000


We have the following Dial Peer:

dial-peer voice 2000 voip
 preference 1
 destination-pattern 85213...
 session target ipv4:10.255.20.11
 voice-class codec 3000
 voice-class h323 1
 dtmf-relay h245-alphanumeric
 no vad
 supplementary-service pass-through
!

Voice Class codec:

voice class codec 3000
 codec preference 1 g711ulaw
 codec preference 2 g729r8
 codec preference 3 g711alaw




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