Specifications

Chapter 10 – Internet Service Commands
Multi-Tech Systems, Inc. AT Commands for EDGE (E1) Modems (S000474A) 160
10.4 AT^SISI Internet Service Information
Description: AT^SISI serves to monitor the status of Internet service profiles defined with AT^SISS.
The AT^SISI read command requests the current status of all defined Internet service profiles.
The AT^SISI write command requests the status of the specified Internet service profile. If the
specified service profile is not defined yet, "+CME ERROR" is returned.
Syntax: Test Command: AT^SISI=?
Response: [^SISI:(list of defined <srvProfileId>s)]
OK
Read Command: AT^SISI?
Response: If response is related to service profile(s) created / opened on this interface:
[^SISI: <srvProfileId>, <srvState>, <rxCount>, <txCount>, <ackData>,
<unackData>]
[^SISI: ...]
If response is related to service profile(s) created / opened on other
interface(s):
[^SISI: <srvProfileId>, <srvParmTag>value "srvType"]
[^SISI: ...]
OK
ERROR
Write Command: AT^SISI=<srvProfileId>
Response: ^SISI: <srvProfileId>, <srvState>, <rxCount>, <txCount>,<ackData>,
<unackData>
OK
ERROR
+CME ERROR: <err>
Parameters:
<srvProfileId>
Internet service profile identifier as defined by AT^SISS (<srvProfileId>).
0...9
<srvState>
Internet service state (for details see AT^SISO parameter <srvState>).
2 Allocated
3 Connecting
4 Up
5 Closing
6 Down
<rxCount>
Number of bytes received via AT^SISR since last successful AT^SISO write command.
This is the same value as displayed by the AT^SISO read command with the parameter <rxCount>.
<txCount>
Number of bytes sent via AT^SISW since last successful AT^SISO write command.
This is the same value as displayed by the AT^SISO read command with the parameter <txCount>.
<ackData>
Number of data bytes already sent and acknowledged at TCP layer. Value 0 indicates that no sent data is
acknowledged yet.
Parameter is not applicable to HTTP, POP3, SMTP and Socket with UDP. For these services the counter is
always set to 0.
<unackData>
Number of data bytes already sent but not yet acknowledged at TCP layer. A value 0 indicates that all sent
data is already acknowledged.
This is the same value as displayed in the response of the AT^SISW write command with the parameter
<unackData>.
Parameter is not applicable to HTTP, POP3, SMTP and Socket with UDP. For these services the counter is
always set to 0.
Notes:
• If a service is in state "Down" the responses for <rxCount>, <txCount>, <ackData> and <unackData> are the last
known values for the service in the states "Connecting", "Up" and "Closing".
• This command is not PIN protected.
• This command is supported in airplane mode.