User's Manual

Page 64 of 187
TECHNICAL MANUAL
Telit GM862 PCS
Tri Band GPRS Data Terminal System Rev.1
2.4.5 Compression control
2.4.5.1 +DS - set data compression
+DS – set data compression
Execute command
Read command
AT+DS?
Returns current value of the data compression parameter.
Write command
AT+DS = <n> Sets the V42 compression parameter.
Parameter:
<n> = 0 - no compression
<n> = 1 - compression enabled
Note: The only value supported is 0 - no compression
Test command
AT+DS=? Returns all supported values of the parameter n
Example
Reference V25ter
SW release Version A
2.4.5.2 +DR - data compression reporting
+DR – data compression reporting
Execute command
Read command
Write command
AT+DR = <n> Controls the data compression reporting upon connection.
Parameter:
<n> = 0 no data compression reporting is displayed at the connection
<n> = 1 a data compression report message is sent by the device upon
connection
Test command
Example
Reference V25ter
SW release Version A