Specifications

Chapter 4 – Serial Interface Control Commands
Multi-Tech Systems, Inc. AT Commands for EDGE Modems (S000371B) 58
4.11 AT+STPB Transmit Parity Bit (for 7E1 & 7O1
Only)
Description: This command is intended for use with 7E1 and 7O1 only. In addition to the 7E1 or 7O1
settings made with AT+ICF the command AT^STPB specifies whether or not to transmit the
parity bit over the air.
Command Descriptions:
The test command returns the supported values of the parameter <n>.
The read command returns the current value of the parameter <n>.
The write command can be used to control the handling of the parity bit. If command fails,
“+CME ERROR: unknown” will be returned.
Test Command Syntax: AT^STPB=?
Response(s): ^STPB: (list of supported <n>s)
OK
Read Command Syntax: AT^STPB?
Response(s): ^STPB: <n>
OK
Write Command Syntax: AT^STPB=<n>
Response(s): OK
ERROR
+CME ERROR: unknown
Parameter Descriptions:
<n>
0 The parity bit will not be transmitted over the air and will be replaced with 0.
This mode is the default setting if 7E1 or 7O1 is activated with AT+ICF.
1 In a data connection 8 bits will be transmitted, including the parity bit; i.e., the parity bit will
be properly transmitted over the air. The setting shall be used if problems are encountered
when Multi-Tech wireless modem is running in the default 7E1 or 7O1 mode enabled with
AT+ICF. In this case, AT^STPB=1 shall be set in addition to the 7E1 or 7O1 settings
selected with AT+ICF.