I don't think sip_invite_parms, sip_invite_contact_params, and sip_invite_to_params do what you need. They append params to the invite request line, contact: and to: uris after the domain part. You need to append to the user part. Also, after looking at the blog post and RFC4904, there's no need to change the To: field. I haven't tried it, but for Contact uri maybe you can use sip_contact_user: export sip_contact_user=${sip_contact_user};tgrp=TG1-1;trunk-context=example.com On 7 October 2014 20:05, Nathan Neulinger <nneul@mst.edu> wrote:
For others/searching benefit - found the sip_invite_parms, sip_invite_contact_params, and sip_invite_to_params variables that seem to do what is needed.
Unfortunately, in my circumstance, looks like it wouldn't be feasible to use without our SIP provider having to trust us to not spoof billing due to how their systems are set up.
-- Nathan
On 10/06/2014 03:45 PM, Nathan Neulinger wrote:
Is there any way to add a parameter to the outbound uri via dialplan variables? In particular, I'm wanting to investigate setting a 'tgrp' and 'trunk-context' value on some outbound calls.
http://www.markholloway.com/blog/?p=352
-- Nathan
------------------------------------------------------------ Nathan Neulinger nneul@mst.edu Missouri S&T Information Technology (573) 612-1412 System Administrator - Architect
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