Vega INSYS Modem GPRS 5.0 Bedienungsanleitung PDF herunterladen (Seite 59)

INSYS GPRS 5.0 serial Functions

Save the extended functions

Automatic acceptance of an incoming CSD call

(for the call of a service center modem)

Save setting for ATS0

Perform RESET, accept all parameters

AT**SAVE

ATS0=2

AT&W

AT**RESET

Note

A connection can be established independent from the callback set-

tings via SMS command (provided that the sender number is stored

at AT**CLIP<index>=<n>).

6.3 Defined termination of GPRS connections for incoming

CSD calls ("CSDPRIO")

For different applications, it is necessary to access them with CSD data connections, al-

though the normal operation runs with TCP connections.

The reasons may be as follows:

• To perform time-critical applications (e.g. software updates from controllers).

• To enable service technicians to access the application or the INSYS GPRS 5.0 se-

rial, which are not integrated in the communication system based on TCP connec-

tions.

• To still have remote access to the application in case the GPRS network fails.

• To still have remote access to the application in case the TCP infrastructure of the

control center fails.

• The basic requirement for the utilization of CSDPRIO is the support of the selective

call acceptance (AT**CLIP=1). Two modes are available: In the first mode

(AT**CSDPRIO=1), only authorized calls may trigger this function and terminate

the connection. In the second mode (AT**CSDPRIO=2), any caller may terminate

the connection.

• If during the CSD call the following applies:

o A TCP connection is established: It will be terminated (NO CARRIER); some

topics must be observed due to the nature of this:

 In some cases (depending on the provider), the TCP RST which the

INSYS GPRS 5.0 serial creates in this case to terminate, the connec-

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Vega INSYS Modem GPRS 5.0 Bedienungsanleitung Seite 59