Specifications

Chapter 1 – AT Commands, S-Registers and Result Codes
Multi-Tech Systems, Inc. SocketModem MT5600SMI/MT5656SMI Reference Guide (S000306B) 46
Fast Connect Commands
Command: $F FastConnect Control
Description: Allows configuring of the client modem to connect to a central site modem
that supports non-standard V.22 and V.22 bis FastConnect protocols.
Specifies the initial requested mode of operation when the modem is
operating as the originator. The options are:
Defined Values: $F0 Normal connection (Default)
$F1 FastConnect without answer tone
$F2 Reserved
$F3 FastConnect with answer tone