FAX Passthru vs. Reinvited The Ultimate Faxing Showdown

Network Engineer having more and more UC duties foisted upon him - can y'all help me troubleshoot a fax issue? Alright, so my background is with ... ReINVITE Expires: ... FAX Passthru Method: DTMF TX Mode: Hook Flash Tx Method: Release Unused Codec: FAX T38 Redundancy: NSE. Strict. None yes. 1. FAX Tone Detect ... 38 passthrough on the server and with the carrier to no avail. ... And does the vrtual fax device use SIP by default or PJSIP? PitzKey ... T38 faxes still work fine for me even with the notice. You can change FAX Passthru Method to REINVITE and the notice goes away and T38 still ... Passthrough or VBD is a transport method for passing modulated data such as fax, modem, and text telephone protocols over an IP network. The transition between voice protocols and fax protocols requires that the Session Initiation Protocol (SIP) re-negotiate the call from voice to fax. This means ... ... difference: Passthrough is the method of using G.711 and RTP to transmit fax whereas Relay is the method of using T.38. Pass-through is the ... ... and FAX Passthru Method as ReINVITE. Click Submit to save your settings ... None, FAX Disable ECAN, yes. Release Unused Codec, yes, FAX Enable T38, yes. FAX T38 ... In an inbound fax call to an analog fax machine, after an RTP session is established a re-invite is sent from CM to SM with M attribute as ... DTMF Process AVT: yes FAX Passthru Method: ReINVITE. DTMF Tx Method: AVT DTMF ... Hook Flash Tx Method: None FAX Disable ECAN: no. Release Unused Codec ...