[Asterisk-Users] H323 - SIP Interoperability

[pesb]

Hi there,
          I would like to communicate H323 IP phones with SIP phones. My H323 
phones are registered to a gnugk GK, and the SIP phones are registered to a 
asterisk SIP proxy.
I could not create a dialplan that works. Inside my extensions.conf file I 
created the following two entrances:

exten => 4,1,Dial(SIP/4)

exten => 5,1,Dial(SIP/5)

This allows SIP phones call each other.
And with the following line, the SIP phones can call my h323 phone:

exten => 101,1,Dial(oh323/101)

So, I would like to call SIP/4 phone by dialing 014. Something like this:

exten => 01X,1,Dial(SIP/X) ; This is not working

How can I do that?

Another question: How can I make the RTP data flow go directly from one IP 
phone to the other? Rigth now, all the RTP data flow goes through the SIP 
proxy.

thanks in advance,
                            Pablo Salinas