Unveiling the Secrets of FAX Passthru Methods NSE vs. ReINVITE – A Deep Dive

34 or 14.4 (Faster Faxing = Less Minutes) Fewer Transmission retries = Less Redials, etc. When I use G.711 Pass-Through almost every fax has a ... 3. Fax tones are exchanged inband. 4. Fax Passthrough is a special case of Modem Passthrough. VBD (Voice Band Data) is Modem Passthrough. Fax passthrough occurs using one of two methods on Cisco voice gateways, NSE-based passthrough or protocol-based pass-through.... Cisco ... FAX Passthru Method Select the fax passthrough method: None, NSE, or ReINVITE. Default: NSE. DTMF Tx Method Select the method to transmit DTMF signals to the ... FAX Enable T38: no and set the following as. FAX Passthru Method: ReINVITE (you can play with NSE or "no" option as part of your troubleshooting ... fax-modem and ... DTMF Process AVT: yes FAX Passthru Method: ReINVITE. DTMF Tx Method: AVT DTMF Tx Mode: Strict DTMF Tx Strict Hold Off Time: 40 FAX Process NSE: ... After about 3 hours of tinkering Vonage and I discovered that changing the the FAX Passthru Method from ReINVITE to NSE on the Voice>Line 1>Audio Configuration ... ... FAX Passthru Method is set to NSE. T38 faxes still work ... You can change FAX Passthru Method to REINVITE and the notice goes away and ... Payload types and attributes of this method negotiate between the two ends at call setup. ... pass-through, and support for T.38 fax over IPv6. For more ... FAX Passthru Method. Select the fax passthrough method: None, NSE, or. ReINVITE. The default is NSE. DTMF Tx Method. Select the method to transmit DTMF signals ...