Transform Fax Passthru The Power of Method None vs. Reinvite

Fax Pass-Through Global Configuration: ! ... Fax Relay: Relay is the other main method for transporting fax over IP, and its implementation is a ... 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 ... The caller (or callee) issues a ReINVITE indicating it wants to change the call to FAX. The caller (or callee) embeds FAX tones in the RTP stream. For both ... Protocol-based pass-through uses specific messages within the H.323 or SIP call control protocols to switch a voice call to a G.711 passthrough call. Once I changed the Fax Passthrough Method parameter to Reinvite under Line 1 settings in the WebUI of the SPA112 I was able to send. Also T ... Configuring Cisco ATA · Fax Passthru Method - ReINVITE · Fax T38 ECM Enable - yes · Echo Canc Enable - no · Fax Enable T38 - yes · Fax T38 Redundancy - 3 · Fax Tone ... When implementing the transport method besides the fax settings such as fax ... or response might pass through many intermediate routers and ... The following two pass-through techniques are possible: The configured voice codec is used for the fax transmission. This technique works only ... Enables the device to generate (or not) a new SRTP key upon receipt of a re-INVITE from the SIP UA associated with the IP Profile. The key appears in the SDP's ... When a re-invite is received with G711 and silence suppression is off as part of retrieve request, the call is not treated as fax transition ...