Specifications

Chapter 4 – Serial Interface Control Commands
Multi-Tech Systems, Inc. AT Commands for EDGE (E1) Modems (S000474A) 72
4.10 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.
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.
Syntax: Test Command: AT^STPB=?
Response: ^STPB: (list of supported <n>s)
OK
Read Command: AT^STPB?
Responses: ^STPB: <n>
OK
Write Command:AT^STPB=<n>
Responses: OK
ERROR
+CME ERROR: <err>
Parameters:
<n> This value can be stored with AT&W
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. ( This
is the factory default value; it can be restored to 'x' with AT&F).
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.
Notes:
• This command is not PIN protected.
• This command is supported in airplane mode.