Marek Zelem wrote: > Hi all > > Thanks a lot for your responses. I will change Fax passthru method of > ATA to REINVITE (it was indeed NSE - thanks Damjan). I can experiment with > it only out of working hours so I have to wait till evening. > > But, I have a question about what Steve said. Does it have to be > answering party who initiate switch to T38? I am pretty sure that when I > am calling T38Gateway() it is fax on the line. At least nobody except the > fax machine can answer the call. Is it possible to force somehow > T38Gateway() to switch to T38. I found SipT38SwitchOver() but it does not > work when call comes from CAPI and SIP is not involved yet. > > And what about opposite direction? When fax machine is calling through > ATA to Callweaver and ISDN. Will Callweaver detect fax and initiate switch > to T.38? I just do T38Gateway() call to CAPI. > The T.38 spec says the answering end of the T.38 link must initiate the T.38 negotiation. When we receive a call from a SIP device we listen for FAX tone from the destination FAX machine, and initiate T.38 negotiation when we hear the tone. When we start a SIP call we just wait for the far end to do something.
Regards, Steve _______________________________________________ Callweaver-users mailing list [email protected] http://lists.callweaver.org/mailman/listinfo/callweaver-users
