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9-393810-A2-GB30-20 November 1996
Table 9-6
(6 of 6)
V.42/MNP/Buffer Configuration Options
*RxBuffDiscDelay: Disable
Nxt 0sec 60sec Disable
Receive Buffer Disconnect Delay. Determines the maximum amount of time the modem can continue to send data in its
Receive Buffer to the DTE after the modem is commanded by the DTE to disconnect, or after the modem detects a line
disconnect. Through the DCP the available settings are Disable, 10sec, and 60sec; Disable means that the disconnect
occurs immediately. The default is Disable.
Disable āā– Modem disconnects immediately without attempting to send data stored in its buffers.
10, 60 sec
– Maximum amount of time the modem tries to empty its buffers before disconnecting. In both cases (10 sec
and 60 sec), the modem disconnects much sooner if it can empty its buffers.
NOTE: This configuration option is not available if Error Control Mode configuration option is set for DirectMode.
AT command is S-register S39 =
n
, where
n
is 0 for Disable and any value from 1 to 255 in 1 second increments.
*Max Frame Size
Nxt 256 192 128 64 32 16
Sets the maximum frame size for V.42 and MNP. For V.42 operation, 128 is the maximum value, and a higher value has
the ef
fect of setting the frame size to 128. For MNP, 64 is the minimum value, and any lower value has the effect of
setting the frame size to 64.
For cellular applications, at least one of the modems should be set to 32.
AT command is \A:
\A0 = 64
\A1 = 128
\A2 = 192
\A3 = 256
\A4 = 32
\A5 = 16
*CellularEnhance
End Disable Enable
Enables or disables V.42 Cellular Enhancement mode.
Disable – The modem uses standard techniques for V
.42 operation.
Enable – Cellular enhancements are enabled. The modem is still compatible with modems that do not have cellular
enhancements installed or enabled.
AT commands are S91 = 0 for Disable and S91 = 1 for Enable.
*This configuration option is only available if Async/Sync Mode is configured for Async. Refer to the DTE Interface
configuration options group for more on Async/Sync Mode.