On Aug 7, 2007, at 12:21 PM, Matthew Rubenstein wrote: > On Tue, 2007-08-07 at 13:38 -0400, Andrew Joakimsen wrote: >> On 8/6/07, Matthew Rubenstein <[EMAIL PROTECTED]> wrote: >>> According to Xorcom's press release advertising their >>> reliable Asterisk >>> Fax/ZAP solution >>> ( http://www.xorcom.com/documentation/white_papers/fax_modem ), the >>> problem Asterisk has with mediating faxes is Zaptel timer desync >>> problems. So does that mean that Asterisk can reliably receive >>> and send >>> faxes when connected to the PSTN by SIP (or IAX) to a gateway >>> switch? >>> -- >>> >> >> Yes, if all the SIP endpoints support ITU-T Recommendation T.38. The >> problem is there is no such thing right now in Asterisk and no plans >> by Digium to add it.
Is thinking of using callweaver something you may consider? >> >> If you have a SIP provider supporting T.38 then you can have calls >> from your T.38 capable devices forwarded to that provider, but you >> must use Asterisk 1.4 and pray it works. > > Thanks for the clear, concise - and quick - reply. I think my > followup > is more appropriate to the -users list, but I don't understand the > protocol for crossposting, or somehow notifying the readers of this > thread in this -biz list that I'm jumping. I'll repost there if > asked or > advised. > > What does the SIP provider (SIP/PSTN gateway) have to do to support > T.38? Is it just a question of all their gear between their TDM > network > and the SIP gateway supporting T.38? Or do their operations have to do > anything extra to support it, other than buying the right routers and > enabling the right configs when deploying those routers? > > Also, the current T.38 "SIP Passthru" support in Asterisk means that > Asterisk can connect two other SIP hosts (or two connections to eg. a > single SIP/PSTN gateway host) that are carrying a call whose media > content is just fax data, correct? But can't do anything but connect > those endpoints (eg, save the fax on the Asterisk HD). But can that > call > be recorded to Asterisk HD with the fax data intact, or can extra legs > (muted) be connected to a "fax conference" that feeds multiple > receiving > (POTS) faxes with the same incoming fax call data? > -- > > (C) Matthew Rubenstein > > > _______________________________________________ > --Bandwidth and Colocation Provided by http://www.api-digital.com-- > > asterisk-biz mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-biz Andres Paglayan --"Harmony is more important than being right" Bapak _______________________________________________ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-biz mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-biz
