asterisk users - Sep 2004 - OH323 return call from openphone to sip?

I figure that I've successfully loaded and compiled the h323 module into
asterisk

 

I can successfully place a call from openphone to a sip phone (snom200)

So I figure that the h323 module is working.

 

The question I have is how do I return a call from the sip phone to
openphone?

 

I get an error message 

Sep  7 17:09:49 NOTICE[110992304]: chan_h323.c:861 oh323_request: Asked
to get a channel of unsupported format '0'

Sep  7 17:09:49 NOTICE[110992304]: app_dial.c:715 dial_exec: Unable to
create channel of type 'H323'

 

Does anyone have a working example of how to configure h323.conf and an
example dial string for 

Extensions.conf?

I figure from the error message the format of the dial string is
incorrect.

 

Currently I'm not registering with a gatekeeper

 

Thanks,

 

Curtis 

 

H323.conf

 

[77]

type=friend

host=192.168.1.20

context=local

 

extensions.conf

 

exten => 77,1,Answer

exten => 77,2,Dial,H323/192.168.1.20\77

 

 

 

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