Functions and their Configuration
INSYS GSM 4.2
INSYS GSM 4.2 compact
74
Sep-06
6.5.1
Selective call answer
When this option is activated, the INSYS GSM will only accept connections from the
specified phone numbers. You have the option to allow entire number blocks; the wild
card character
*
replaces exactly any one digit. The selective call acceptance is also valid
for data and voice connections as well as incoming SMS commands.
Note
To use this function, the caller may not deactivate the calling line
identification presentation (CLIP).
Note
The selective call acceptance is only active after a device reset.
Number Format
The allowed number has to be entered in exactly the same format as it is output for a call
with "+CLIP: ….” (without ""). The transmitted format of the number may depend on the
provider – e.g. the leading "+49" may be replaced by "0049".
Note
We urgently recommend verifying the number by placing a test call.
Procedure: Configure selective call acceptance
1.
In the tab "Access control" in the group "Selective call acceptance", activate the
control box "Only accept calls from these numbers".
2.
Enter the requested numbers in the entry fields.
3.
Perform a reset. (see Chap. 2.8.2 )
Pertinent AT commands
AT**CLIP
Selective Call Answer
AT**RESET
Device reset
Non-authorized numbers
The INSYS GSM will reject calls from non-authorized numbers immediately to keep the
line free. These calls can also not be accepted manually (
ATA
). The caller receives the sig-
nal
BUSY
.
The GMS engine will then work with the setting
AT+CLIP=1
. For each incoming call, the
following phone number is displayed as well:
Ring
+CLIP: „+49941560061“,145,,,,0
