2 B Channel Transfer (2BCT) and FreeSWITCH
Is anyone having success using 2B Channel Transfer with FreeSWITCH and Sangoma? If so, what are the driver considerations and what does it take to make the transfer work? Thanks, Doug
Possibly a rephrase will help. Can anyone help me with the procedure to initiate a 2B Channel Transfer on FreeSWITCH? I see how it should be done in * with bridge...but can't seem to find much info on it for FreeSWITCH. I see a function "pri_channel_bridge" in pri.c but I'm not sure where it is called form and how. I must be missing something super obvious...or not many people are using this feature. Thanks. Doug Albrechtsen wrote:
Is anyone having success using 2B Channel Transfer with FreeSWITCH and Sangoma?
If so, what are the driver considerations and what does it take to make the transfer work?
Thanks, Doug
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I don't know of any stack or endpoint using either libpri or sangoma's stack that can do a TBCT /b On May 7, 2010, at 12:29 PM, Doug Albrechtsen wrote:
Possibly a rephrase will help. Can anyone help me with the procedure to initiate a 2B Channel Transfer on FreeSWITCH?
I see how it should be done in * with bridge...but can't seem to find much info on it for FreeSWITCH. I see a function "pri_channel_bridge" in pri.c but I'm not sure where it is called form and how.
I must be missing something super obvious...or not many people are using this feature.
Thanks.
2010/5/7 Brian West <brian@freeswitch.org>:
I don't know of any stack or endpoint using either libpri or sangoma's stack that can do a TBCT
Looks like * does do this job: Status: Functional in DMS100 in Asterisk 1.4, and beta patch for 5ESS, NI2 2BCT added into libpri trunk by mattf 2007-09-21 Contributors: mflorell (mflorell at-the-domain gmail.com) http://bugs.digium.com/view.php?id=3554 http://www.misdn.org/index.php/Call_Forwarding http://www.voip-info.org/wiki/view/Asterisk+cmd+BristuffZapCD http://www.voip-info.org/wiki/view/Asterisk+cmd+SrxDeflect ; For digital ports using ISDN PRI protocols: ; Support switch-side transfer (called 2BCT, RLT or other names) ; This setting must be enabled on both ports involved, and the ; 'facilityenable' setting must also be enabled to allow sending ; the transfer to the ISDN switch, since it sent in a FACILITY ; message. ; transfer=yes But, this was coded in USA and for 5ESS, for europe i couldn't use it with EuroISDN. By the way, some guy (from Germany) did it for PRI connected between enterprise PBX-grade Alcatel PBX (not Carrier grade) and asterisk like 2-3 years ago, only with chan_capi and AFAIR dialogic cards, as for openzap/dahdi i havn't seen working solution by myself. maybe commercial PRI stack from Sangoma is a good way to start? also are you sure that 2BCT is required? maybe the 'path replacment' or some QSIG variant singalling will be more appropriate?
From my knowledge: some not-so-common ISDN features are realized by different vendors in some VERY different ways (try to QSIG-GF Siemens with Avaya or even Alcatel with Lucent...) so the question is 'is the other side supporting this as well, and if it's compatible with my isdn PRI stack'
wish you many luck on this, as i haven't found good and reliable solution for this (vendor independent and 'other side'-independent). I've been lurking for this functionality for years now. Regards,
On May 7, 2010, at 1:19 PM, Krzysztof Drewicz wrote:
Looks like * does do this job:
Status: Functional in DMS100 in Asterisk 1.4, and beta patch for 5ESS, NI2 2BCT added into libpri trunk by mattf 2007-09-21 Contributors: mflorell (mflorell at-the-domain gmail.com)
maybe commercial PRI stack from Sangoma is a good way to start?
Its on the list for Sangoma to add to to prid. /b
Yes...I believe it will be supported by them at some point. However, I'm told by Sangoma that it is not on the short-term road map for the Sangoma PRI stack...but that if I want 2B Channel Transfer then I need libpri. I'm still sorting through that, trying to figure out how to get it to go. Thanks Brian West wrote:
On May 7, 2010, at 1:19 PM, Krzysztof Drewicz wrote:
Looks like * does do this job:
Status: Functional in DMS100 in Asterisk 1.4, and beta patch for 5ESS, NI2 2BCT added into libpri trunk by mattf 2007-09-21 Contributors: mflorell (mflorell at-the-domain gmail.com <http://gmail.com/>)
maybe commercial PRI stack from Sangoma is a good way to start?
Its on the list for Sangoma to add to to prid.
/b
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But work will have to be done in FreeSWITCH to send the indication to do the transfer its not magically going to happen. /b On May 7, 2010, at 1:51 PM, Doug Albrechtsen wrote:
Yes...I believe it will be supported by them at some point. However, I'm told by Sangoma that it is not on the short-term road map for the Sangoma PRI stack...but that if I want 2B Channel Transfer then I need libpri. I'm still sorting through that, trying to figure out how to get it to go.
Thanks
I understand...Thanks for your reply. Brian West wrote:
But work will have to be done in FreeSWITCH to send the indication to do the transfer its not magically going to happen.
/b
On May 7, 2010, at 1:51 PM, Doug Albrechtsen wrote:
Yes...I believe it will be supported by them at some point. However, I'm told by Sangoma that it is not on the short-term road map for the Sangoma PRI stack...but that if I want 2B Channel Transfer then I need libpri. I'm still sorting through that, trying to figure out how to get it to go.
Thanks
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participants (3)
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Brian West
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Doug Albrechtsen
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Krzysztof Drewicz