Specifications

UC864-E/G/WD/WDU AT Commands Reference Guide

80304ST10041a Rev. 7 - 2010-10-14

#SKTL - Socket Listen

Command returns the OK result code if successful.

Note: the command to be successful requests that:

- the GPRS context 1 is correctly set with +CGDCONT

- the authentication parameters are set (#USERID, #PASSW)

- the GPRS coverage is enough to permit a connection

- the GPRS has been activated with AT#GPRS=1

When a connection request comes on the input port, if the sender is not

filtered by the internal firewall (see command #FRWL), an unsolicited code

is reported:

+CONN FROM: <remote addr>

Where:

<remote addr> - host address of the remote machine that contacted the

device.

When the connection is established the CONNECT indication is given and

the modem goes into data transfer mode.

On connection close or when context is closed with #GPRS=0 the socket is

closed and no listen is anymore active.

If the context is closed by the network while in listening, the socket is

closed, no listen is anymore active and an unsolicited code is reported:

#SKTL: ABORTED

AT#SKTL? Read command returns the current socket listening status and the last

settings of parameters <socket type>,<input port> and <closure type>, in

the format:

#SKTL: <status>,<socket type>,<input port>,<closure type>

Where

<status> - socket listening status

0 - socket not listening

1 - socket listening

AT#SKTL=? Test command returns the allowed values for parameters <mode>, <socket

type>, <input port> and <closure type>.

Example

Activate GPRS

AT#GPRS=1

+IP: ###.###.###.###