Rainbow Electronics GM862-QUAD-PY - Manual (Page 56)

Easy GPRS User Guide
80000ST10028 Rev. 4 - 16/07/08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 56 of 63
• is the unsolicited Sring mode.
• sets text or hex data view.
• sets TCP keepalive parameter in minutes (up to 240), 0 means keepalive
disabled.
Examples:
• AT#SCFGEXT = 1,1,0,0 - Socket 1 set with SRING data amount
• AT#SCFGEXT = 1,2,1,0 - Socket 1 set with SRING view data mode in hex.
4.2.3 Send data in command mode connections
To send data in command mode we can use the command AT#SSEND.
At the prompt we can write data and send immediately on the socket with CTRL-Z sequence.
Maximum number of bytes is 1024, if more characters are written they are truncated in upload. The
command syntax is:
AT#SSEND =
Where is the connection Id of the socket that we want to use to send data (socket must be
opened otherwise an error is raised).
Example:
We send the string “hello” on an echo socket with SRING mode set to Data amount.
AT#SSEND=1
> hello
OK
SRING: 1,5
4.2.4 Receive data in command mode connections
To receive data in command mode it is possible to use the AT#SRECV.
If we receive an unsolicited message SRING we can extract the data from the socket buffer in
command mode. The syntax of the command is:
AT#SRECV=,