Insys GSM 4.2 Compact 11-02-01-03-04.002 Manuale Utente

INSYS GSM 4.2  
INSYS GSM 4.2 compact 

 

Functions and their Configuration 

 

Sep-06 

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For a data connection with a device outside the GSM network (analog modem or ISDN 
TA), the right protocol has to be selected. This setting is not important for data connec-
tions to a GSM device. 
Enter the requested protocol in the group "Protocol (not GSM)". 

Handshake controls the data flow at the serial interface if the data rate is higher than 
what the INSYS GSM or the connected terminal device can currently process.  

 

Note 
You must deactivate handshake of the serial interface in the follow-
ing cases: 

¾

  The INSYS GSM is operated as a stand-alone device, i.e. it is 

not connected via the serial interface. 

¾

  The INSYS GSM is operated at a device which does not sup-

port hardware handshake. 

 

 

No handshake 
The INSYS GSM ignores redundant data. 
Software handshake  
The INSYS GSM controls the data flow with the help of control characters (XON/XOFF) via 
the data lines. 

Hardware handshake  
The INSYS GSM controls the data flow via the separate control lines RTS/CTS. 

Procedure: Configure handshake: 
Select the requested behavior in the group "Handshake". 

Pertinent AT commands 

Data flow control of the serial interface 

The control line DTR of the serial interface indicates whether a device (configuration PC, 
control) is connected with the INSYS GSM and is active. The setting controls the behavior 
when the DTR signal is missing, e.g. when the terminal device (PC, control) is discon-
nected. 

 

Note 
You must deactivate the DTR behavior of the serial interface in the 
following cases: