Parameter: Fax Modem Relay: Detection Mode

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 a 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 known to always be fax or modem (e.g. when connecting with a fax server).