Specifications
Chapter 10 – Internet Service Commands
Multi-Tech Systems, Inc. AT Commands for EDGE (E1) Modems (S000474A) 170
10.10 AT^SICC Internet Connection Close
Description: The AT^SICC write command releases a connection opened with AT^SICO and restores the
previously set inactivity timeout "inactTO" of the selected connection profile.
The command returns an error if any services are bound to this profile. Before using the
AT^SICC write command be sure that all services were closed with AT^SISC.
Syntax: Test Command: AT^SICC=?
Response: [^SICC:(list of defined <conProfileId>s)]
OK
Write Command: AT^SICC=<conProfileId>
Response: OK
ERROR
+CME ERROR: <err>
Parameter:
<conProfileId>
0...5 Internet connection profile identifier defined with parameter <conProfileId> of AT^SICS.
Notes:
• Be sure not to mix up the start and close commands connection profiles and service profiles. It is allowed to use
only the combinations AT^SICO / AT^SICC or AT^SISO / AT^SISC.
• This command is PIN protected.
• This command is not supported in airplane mode.
10.11 AT^SISX Internet Service Execution
Description: The AT^SISX command sends ICMP (Internet Control Message Protocol) Echo Requests to a
target IP address or host name (also referred to as Ping command).
The AT^SISX command can be used any time while a connection profile, i.e. a bearer, is active.
The bearer may have been started either with AT^SICO, or if a service is in use, with AT^SISO. If
issued although no bearer is active or no connection profile created at all, AT^SISX returns
ERROR.
The AT^SISX write command starts the available service type <service>, i.e. the ping command.
The command returns one row for every ICMP Echo Request (max. 30 lines, see parameter
<request>). The last Ping response line is followed by an empty line, then another two lines
appear to report a statistic calculated from the Echo Request responses. To stop the periodic
ping type any character, e.g. "AT" or "at". After calling the ping command the AT channel is
blocked until all ICMP requests are executed.
Sending the Ping command does not restart the inactivity timeout "inactTO" of the used
connection profile (see AT^SICS), i.e. if the bearer was opened with AT^SICO the "inactTO"
value remains "-1" (= inactivity timeout disabled), and if the bearer was opened with AT^SISO the
"inactTO" value set with AT^SICS remains applicable. The Ping command can only be used to
prevent that a network initiated inactivity timeout closes the bearer (see also description of
AT^SICO).
Syntax: Test Command: AT^SISX=?
Response: ^SISX:<service>, (list of supported <conProfileId>s), <address>, (range of
<request>), (range of <timelimit>)
OK
Write Command: AT^SISX=<service>, <conProfileId>, <address>[, <request>, <timelimit>]
Response: In case of <pingInfoType>= 1: ICMP Echo Requests (1 - 30 rows)
^SISX:<service>, <pingInfoType>, <conProfileId>, <address>,
<roundTripTime>
[...]
In case of <pingInfoType>= 2: Packet statistic (1 row)
^SISX:<service>, <pingInfoType>, <conProfileId>, <sent>, <received>, <lost>,
<lostPercent>
In case of <pingInfoType>= 3: Time statistic (1 row)
^SISX:<service>, <pingInfoType>, <conProfileId>, <minRTT>, <maxRTT>,
<meanRTT>
OK
ERROR
+CME ERROR: <err>