Telit Wireless Solutions GT863-PY - Multisocket

GT863-PY Terminal Product Description
80269ST10026a Rev. 2 - 18/03/08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 28 of 51
3.2 Multisocket
New functionality of the Telit modules, multisocket is an extension of Telit Easy GPRS feature,
which allows the user to have two contexts activated (that means two different IP address), more
than one socket connection (with a maximum of 6) and simultaneous FTP client service.
The basic idea of multisocket is the possibility of suspend a socket connection with the escape
sequence +++.
With IP Easy we can use a SKTD to open a socket connection and go online. After online activities
we use +++ sequence to close the connection (see the figure below).
Where the green part represents the module command mode while the red part is the online mode.
Now, the online mode can be suspended with the escape sequence by using the multisocket
feature. During suspend mode the data received by the socket will be buffered. These data will be
displayed after socket resumption, as shown in the figure below:
O
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On Line
+++
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