routing outbound calls thru specific voice ports

Answered Question
Jun 3rd, 2010

I have a CME systems that has both SIP and analog PSTN trunks. I would like outbound calls from IP phones to go out the SIP trunks.  I also want to attach a FAX to an ATA device but I need to send FAXes out the analog ports since FAXes over SIP doesn't work to well.  HOw can I do this?

Thanks in advance.

I have this problem too.
0 votes
Correct Answer by Brandon Buffin about 6 years 4 months ago


The following link has a good example of how to do this.

Hope this helps.


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Overall Rating: 5 (1 ratings)
Md. Mijanur Rahman Thu, 06/03/2010 - 11:11

Hi, create a voip dial peer for your phone calls and a pots dial-peer for FAX like below:


dial-peer voice 1 voip


session protocol sipv2

session target ipv4:

no vad


Hope your phones are already registered as SIP and your voice register global is configured.

I haven't configure the FAX port yet but it's pretty simple as FXO port configuration, you will need a pots dial-peer for that.


dial-peer voice 2 pots




You might need some additional commands to active FAX protocol (as example:T.38), please google for it.


DIEGO ALONSO Thu, 06/03/2010 - 11:43

That's not quite what I mean.  The problem is for outbound calls.  I will have two dial peers with the same destination pattern.  For instance 9[2-9].......

The difference is one will be a Voip SIP port and the other an analog port.  So outbound calls made from a SCCP phone need to use the SIP trunk and when a FAX device places a call I need the CME to send it out on an analog port instead of the SIP peer. 

So somehow I need the CME to match an outbound peer depending on which inbound peer is placing the call.



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