[asterisk-users] To Header instead of Request URI based routing

Joshua Colp jcolp at digium.com
Fri Dec 22 07:56:47 CST 2017

On Fri, Dec 22, 2017, at 9:54 AM, Benoit Panizzon wrote:
> Dear List
> It looks like the common way to to sip signaling over a trunk is:
> In the Request URI, return the 'Register' Contact.
> In the To: Header, send the destination number.
> Unfortunately, asterisk with pjsip (i did not try chan_sip) does
> expect the dialed extension as request uri and does ignore what it is
> getting in the To: header.
> I could not find any hint in the documentation of this can be changed.
> I found instructions for a work-around:
> http://www.kempgen.net/voip/sip-request-uri-vs-to-header-routing.html
> In the meantime: Is there a way to tell the asterisk with pjsip to use
> the To: header to address an extension?

Both chan_sip and chan_pjsip use the request URI, there's no configuration option currently to change it. Most people end up just doing the parsing in the dialplan.


Joshua Colp
Digium, Inc. | Senior Software Developer
445 Jan Davis Drive NW - Huntsville, AL 35806 - US
Check us out at: www.digium.com & www.asterisk.org

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