Intel 537EX - Manual (Page 60)

60 536EX Chipset Developer’s Manual
Intel Confidential
Error Correction and Data Compression
+DR=m 0
Data Compression Reporting: Controls whether the “+DR:” result code is transmitted from the DCE to
DTE once a connection with has been made. If enabled the result code displayed shall represent the
current negotiated DCE-DCE data compression type and is issued after the Error Control Report (+ER)
and before the final result code CONNECT. +DR accepts one numeric parameter decimal value and the
format is as follows:
0 Disables Data compression reporting—No +DR result code transmitted
1 Enables Data compression reporting—+DR result code transmitted
Display messages when +DR = 1,
+DR: NONE Data compression not in use
+DR: V42B V.42 bis is in use in both directions
+DR: V42B RD V.42 bis is in use in receive direction only
+DR: V42B TD V.42 bis is in use in transmit direction only
+DR: MNP5 MNP5 in use
+DS=m see ‘m’
Data Compression: This command sets multiple parameters for the control of data compression.
m = , , , Default: m = 3, 0, 2048, 6
Specifies the direction of the data compression from the DTEs point of view.
Range: = 0–3
Default: = 3
= 0
Negotiated, no compression
= 1 Transmit only
= 2 Receive only
= 3* Both directions, accept any direction
Specifies whether the modem should stay connected or disconnect based
on the desired result.
Range: = 0, 1
Default: = 0
= 0* Do not disconnect
= 1
Disconnect
Specifies the maximum number of dictionary entries that should be negotiated.
Range: = 512 to 65535
Default: = 2048
Specifies the maximum string length to be negotiated.
Range: = 6–250
Default: = 6
Table 21. V.44/V.42/V.42 bis and MNP Data Modem Command Descriptions (Continued)
Command Default Description
NOTE: An asterisk (*) denotes the factory-default setting.