I do not blame you for not wanting to do it that way. It would be better to find an ITSP who supports REFER.
If you use sipxbridge and set it up as a trunk it (sipxbridge) will handle the refer locally. It would need the ITSP to support re-invite. If you set it up as an unmanaged gateway then the proxy will send the REFER to the ITSP (or their gateway, etc.), but it sounds like this ITSP does not support reinvite AND requires the "Route by To Header". Smacks to me of a best case of what not to look for. There is a way you can route by the to header in sipxbridge as a siptrunk. There is not a way that I know of to do this as an unmanaged gateway. I'm not sure how hard it would be to add that feature or what else would break or become problematic with users who have lots of unmanaged gateways out there since it also assumes the gateway supports refer and looks at the INVITE and not the TO header. On Fri, Oct 12, 2012 at 10:46 AM, Sven Evensen <sven.even...@onrelay.com> wrote: > A customer is using an ITSP which does not support re-invite, therefore we > set it up an unmanaged gateway and REFER is used when doing a transfer. If > an external call comes through SIP trunk to an AA 200 and the AA does a > transfer to say 211, the refer back to the SIP trunk will have refer-to as > 211 and that is not a number that the SIP trunk knows, it only knows the > full DIDs assigned to that trunk. > > If I program the AA with the full DID of ext 211, then it works. Be we do > not want internal users to transfer to internal users with full DID. > > So is there any way we can do externally originated transfer? > > Thanks, > Sven > > -- > > Sven Evensen, Operations Consultant > > OnRelay > > Elizabeth House │ 39 York Road, London SE1 7NQ, UK │ +44 (0) 207 902 8123 │ > mailto:sven.even...@onrelay.com │ www.onrelay.com > > > This electronic message transmission contains information from OnRelay, > Ltd., that may be confidential or privileged. The information is intended > solely for the recipient and use by any other party is not authorised. If > you are not the intended recipient, be aware that any disclosure, copying, > distribution or use of the contents of this information or any attachment, > is prohibited. If you have received this electronic transmission in error, > please notify us immediately by electronic mail (i...@onrelay.com) and > delete this message, along with any attachments, from your computer. > Registered in England No 04006093 ¦ Registered Office 1st Floor, 236 Gray's > Inn Road, London WC1X 8HB > > > > _______________________________________________ > sipx-users mailing list > sipx-users@list.sipfoundry.org > List Archive: http://list.sipfoundry.org/archive/sipx-users/ -- ~~~~~~~~~~~~~~~~~~ Tony Graziano, Manager Telephone: 434.984.8430 sip: tgrazi...@voice.myitdepartment.net Fax: 434.465.6833 ~~~~~~~~~~~~~~~~~~ Linked-In Profile: http://www.linkedin.com/pub/tony-graziano/14/4a6/7a4 Ask about our Internet Fax services! ~~~~~~~~~~~~~~~~~~ Using or developing for sipXecs from SIPFoundry? Ask me about sipX-CoLab 2013! -- LAN/Telephony/Security and Control Systems Helpdesk: Telephone: 434.984.8426 sip: helpd...@voice.myitdepartment.net Helpdesk Customers: http://myhelp.myitdepartment.net Blog: http://blog.myitdepartment.net _______________________________________________ sipx-users mailing list sipx-users@list.sipfoundry.org List Archive: http://list.sipfoundry.org/archive/sipx-users/
