AT Commands and S-Registers
4-25
3825-A2-GB30-20
November 1996
Table 4-2
(9 of 10)
3825
Plus S-Registers
S80
No Data Disconnect Trigger Signal
Register determines whether Pin 2 (transmit data) or Pin 3 (receive data) of the modem’s RS-232 serial interface is
monitored so that the modem can disconnect the call if there is no activity for a certain period. (See the \T command.)
Register has the following values:
0 = Transmit or Receive
1 = Transmit only
2 = Receive only
3 = Transmit and Receive
The factory setting is 3.
S82
Autorate (Leased Line)
Determines if the Autorate function is used on leased lines when connected in V.32bis, V.32
terbo, or V.34 mode. Autorate
allows the modem to adjust line speed due to varying VF line quality.
Register has the following values:
0 = Enable
1 = Disable
The factory setting is Enable.
S84
AT Command Mode
Determines how the modem responds to valid and invalid AT commands. The selections No ERROR and No Strap or
ERROR permit installation into applications that are customized for a different modem.
Register has the following values:
0 = Normal.
1 = No ERROR. The modem executes all valid commands, ignores invalid commands, and never issues an ERROR
message.
2 = No Strap or ERROR. The modem ignores all configuration commands, but always issues an OK response message.
The value of S84 is Normal when the modem is shipped. The value of S84 is not affected by factory default templates.
S85
Fast Disconnect
Allows the modem to disconnect immediately after receiving a disconnect command.
Register has the following values:
0 = Disable
1 = Enable
The factory setting is Disable.
S88
Straps When Disconnected
Determines if configuration options in the Active (Saved) configuration area are loaded to Active (Operating) when the
modem disconnects.
Register has the following values:
0 or 231 = No Change
1 or 232 = Reload
The value of S88 is No Change when the modem is shipped. The value of S88 is not affected by factory default
templates.
