Maximize Faxing Capabilities The Reinvented Fax Passthru Method Made Simple

38 FAX requests by sending a reINVITE with. T.38 information to the ESBC. The ... • If Passthrough is selected on either side, then the ESBC will let the FAX ... When I use G.711 Pass-Through almost every fax has a transmission error, some to the extent where after 6 retries it fails the fax which is why ... 38 Fax relay, or the best way to pass through fax transmissions. ... 38 seems to work best if the UA initiates the reinvite. Avatar of ... VBD - fax pass-through method as defined in ITU-T V.152 [15]. This ... Then receiving gateway should send re-INVITE with SDP offer using received ... 38 fax session with each other. A fax call is typically started as an audio session and then switches to T.38 once the IMG or SIP ATA detects the preamble tone. Log into your Cisco ATA WebGUI and navigate to the Voice Line 1 option. Under the NAT and Network Settings set the following options. What things should I try to make Freeswitch more amenable to carrying these faxes? The ATAs on the other end are not recieving any T38 re-invite ... ... FAX tone is detected on the PSTN side, FS receives a T.38 > > re-INVITE ... pass the PCMU reINVITE through to the > other leg. > > 2009-03-31 00:30:50 ... Inbound T.38 faxes, when the ATA has to do the reinvite, work perfectly fine from one end to the other. Outbound faxes on the other hand, don't work at all. If the device detects a fax tone within the interval, it ends the voice session and sends a T.38 or VBD re-INVITE message to the IP side and processes the fax.