Configure Fax Relay A

Options	Description
Enable Fax Relay	This option is the global option telling if faxes (Passthrough or T38) will be relayed or not.
Detection Mode	This option contains one of the following mode: Standard, Use relay mode on any tone or Always Relay. Standard: Fax tones and T.38 re-invites will trigger fax relay mode. Modem tones and passthrough re-invites will trigger passthrough mode, though fax detection will still continue. Use relay mode on any tone: Both fax and modem tones will immediately cause switch to the chosen relay mode (without going to passthrough first for modem tones). Always relay: Calls are directly invited using the specified relay mode, without waiting for any fax/modem tone. This improves performance when the calls are know to always be fax or modem (e.g. when connecting with a fax server).
Relay Mode	This option is to choose which mode of fax will be used. This option contains one of the following mode: T.38 or Passthrough. T.38: This relay mode is used for IP. Passthrough: Fax passthrough encodes fax traffic with in a G.711 (ulaw or alaw) voice codec and sends it across the VoIP network as a voice call. In this mode, echo cancellers are disabled, there's a fixed jitter buffer and there's no Voice Activity Detection.
Modem vs. Fax distinction timeout	d
Fax tones detection duration	d
Enable early Fax/Modem tone detection	d
Enable switching to FAX relay upon CNG tone	d
Use V.34	d
Max bitrate	d
Fill bit removal	d
TCF transfer mode	d
Redundancy Count	d
Transmission level (-1dBm unit)	d
Detection type	d
Codec	d
Jitter Buffer Depth	d