Multi-Tech Systems iCell GPRS (MTSMC-G2-IP Manuale Utente
Part 4 – AT Commands for the SocketModem iCell, SocketModem IP, and MultiModem iCell
Chapter 14
Universal IP AT Commands Reference Guide (Document S000457K)
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#CALLBACKTIMER – Set Automatic Call-Back Wait
Description:
This parameter defines the number of seconds the TCP/IP stack will wait before an automatic
call-back operation occurs after receiving an incoming call. It applies only when the
ANSWERMODE parameter is set to an automatic call-back mode (value>1). This timer starts at
the end of the ringing signal.
call-back operation occurs after receiving an incoming call. It applies only when the
ANSWERMODE parameter is set to an automatic call-back mode (value>1). This timer starts at
the end of the ringing signal.
Syntax:
AT#CALLBACKTIMER=<value>
AT#CALLBACKTIMER? Read or display the current setting (or AT#VPHY, AT#VALL).
Values:
Integer between 2 and 255 inclusive. This timer is set in seconds.
Default:
2
#CALLSCREENNUM – Set Caller ID Service
Description:
When receiving an incoming call, the caller identification (Caller ID) service allows the TCP/IP
stack to identify the phone number of the remote caller. This information is helpful in preventing
unauthorized callers to trigger actions on the TCP/IP stack.
stack to identify the phone number of the remote caller. This information is helpful in preventing
unauthorized callers to trigger actions on the TCP/IP stack.
This parameter allows the user to filter the incoming calls when the ANSWERMODE parameter is
set to an automatic mode (value>0). This filtering doesn’t apply when the ANSWERMODE
parameter is set to 0. In this case, it is the host’s responsibility to accept or reject the incoming
call. If an incoming phone number is not authorized, the TCP/IP stack will ignore it.
set to an automatic mode (value>0). This filtering doesn’t apply when the ANSWERMODE
parameter is set to 0. In this case, it is the host’s responsibility to accept or reject the incoming
call. If an incoming phone number is not authorized, the TCP/IP stack will ignore it.
Syntax:
AT#CALLSCREENNUM=<value>
AT#CALLSCREENNUM? Read or display the current setting (or AT#VPHY, AT#VALL).
Values:
0 - Zero. Remote caller not authorized.
* - All. No filtering is applied on incoming calls. All remote phone numbers are authorized. This
value must be set to receive incoming calls when Caller ID service is not available.
Not valid for Analog Devices.
Decimal Phone Number. Only the phone number configured here is authorized for incoming
calls. Alphanumeric ASCII text string up to 64 characters.
calls. Alphanumeric ASCII text string up to 64 characters.
Default:
0
#KEEPALIVEMODE – Keep-Alive Mode
Description:
If the keep-alive mode is not equal to zero, then the keep-alive function will trigger. The function
allows a persistent physical connection to be established. If enabled and a remote host is not
reached, the physical connection is disconnected (if connected) and reestablished.
allows a persistent physical connection to be established. If enabled and a remote host is not
reached, the physical connection is disconnected (if connected) and reestablished.
Syntax:
AT#KEEPALIVEMODE=<Keepalivemode value>
AT#KEEPALIVEMODE? Read or display the current setting (or AT#VKEEPALIVE or AT#VALL
).
Values:
0 - Keep-Alive mode is disabled
1 - Keep-Alive mode is enabled using a TCP connection
2 - Keep-Alive mode is enabled using ICMP
Default:
0
Example:
AT#KEEPALIVEMODE=1