Paradyne 3821PLUS S84 ± AT Command Mode, S85 ± Fast Disconnect, S88 ± Straps When Disconnected

COMSPHERE 3821Plus Modem

Table 4-2

(9 of 10)

3821Plus S-Registers

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

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.

S89 ± V.42 ARQ Window Size Increase

Register allows the V.42 Automatic Request for Transmission (ARQ) window size to be set to a value from 6 to 15 frames to accommodate satellite delays.

Register has the following values:

0 = Automatic Adjust (6±15 frames)

1 = 7 frames

2 = 8 frames

3 = 9 frames

D D

D D

9 = 15 frames

This command applies only to connections made using V.42bis data compression or V.42 error control.

Factory setting is Automatic Adjust.

S90 ± DTE Rate = VF Rate

Register forces the DTE (computer) data rate to be equal to the VF (telephone line) data rate.

Register has the following values:

0 = Disable

1 = Enable

Factory setting is Disable.

4-24 January 1999 3821-A2-GB20-40