Register Descriptions
F-76 AT Commands
:T0=
n Timer for V.22bis, V.22, and V.32 Modes During Multi-Protocol
Answer
Range:
Where n is an integer from 0 to 255 representing tenths of a second
Default:
40 (4 seconds)
This command requires 1200 bps or higher operation with %F0%L1 set.
Determines how long the modem attempts to establish a V.32, V.22bis, or V.22
connection before attempting to establish a V.23 split speed or V.21 connection.
During this period, the modem sends V.22bis or V.22 carrier.
:T1=
n Timer for V.23 Split-Speed Mode During Multi-Protocol Answer
Range:
Where n is an integer from 0 to 255 representing tenths of a second.
Default:
30 (3 seconds)
This command requires 1200 bps or higher operation with %F0%L1 set.
When the modem is unable to establish a V.32, V.22bis, or V.22 connection, :T1
determines how long the modem attempts to establish a V.23 split-speed connection
before attempting a V.21 or V.23 half-duplex connection. During this period, the
modem sends a V.23 forward channel carrier.
NOTE
If :T1 is set to 0, the modem does not send a V.23 forward channel carrier during
the multi-protocol answer sequence.
:T2=
n Timer for V.21 Mode During Multi-Protocol Answer
Range:
Where n is an integer from 0 to 255 representing tenths of a second.
Default:
0 (V.23 half duplex disabled)
This command requires 1200 bps or higher operation with %F0%L1\N3 set.
When the modem is unable to establish a V.32, V.22bis, V.22, or V.23 split-speed
connection, :T2 determines how long the modem attempts to establish a V.21
connection before attempting a V.23 half-duplex connection. During this period, the
modem sends V.21 carrier.
Set :T2=20 (2 seconds) when including V.23 half duplex in the multi-protocol answer
modem.
