Specifications

UC864-E/G AT Commands Reference Guide
80304ST10041a Rev. 3 - 18/07/08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 154 of 259
3.5.6.3.3 Double Escape Character Replacement Control - +FDD
+FDD - Double Escape Character Replacement Control
AT+FDD=<mode> Set command concerns the use of the <DLE><SUB> pair to encode
consecutive escape characters (<10h><10h>) in user data.
Parameter:
<mode>
0 - currently the only available value. The DCE decode of <DLE><SUB> is
either <DLE><DLE> or discard. The DCE encode of <10h><10h> is
<DLE><DLE><DLE><DLE>
1 - The DCE decode of <DLE><SUB> is either <DLE><DLE>. The DCE
encode of <10h><10h> is <DLE><SUB><DLE><SUB>
AT+FDD? Read command returns the current value of parameter <mode>
AT+FDD=? Test command returns all supported values of parameter <mode>.
Note: test command result is without command echo
Reference ITU T.31 and TIA/EIA-578-A specifications
3.5.6.3.4 DTE inactivity timeout - +FIT
+FIT - DTE inactivity timeout
AT+FIT=[<time>[,<action]] Execution command sets DTE inactivity timeout
Parameter:
<time> : indicates the DTE inactivity timeout in seconds. The required
timeout is 1 to 255 seconds. The value of 0 indicates that
timeout is disabled.
0 - 255
<action>
0 - Upon timeout, the DCE shall go on-hook, executing an implied ATH command;
then reset to +FCLASS = 0 if +FCLASS = 0 is supported by the DCE
1- Upon timeout, the DCE shall only go on-hook. This feature is used to detect
possible system failure, when either no line or DTE activity has occurred for a
minimum amount of time
Note:
The inactivity timer starts when the DCE has taken some action
that requires DTE respons
e. If the DTE does respond, the DCE shall
reset the inactivity timer.
AT+FIT? Read command reports the current value of the parameters
AT+FIT=? Test command returns all supported values of the parameters.
Reference ITU T.31 and TIA/EIA-578-A specifications
3.5.6.3.5 Carrier loss timeout - +FCL