CI (Protocol/Connection Indication)

This command applies to the XBee 3 Cellular LTE-M/NB-IoT.

Displays information regarding the last IP connection (when the IP command = 0 or 1).

Displays information regarding the last IP connection when using Transparent mode (AP = 0).

The following table provides the parameter's meaning when IP = 0 for UDP connections.

Parameter	Description
0x00	The socket is open.
0x01	Tried to send but could not.
0x02	Invalid parameters (bad IP/host).
0x10	Not registered to the cell network.
0x11	Cellular component not identified yet.
0x12	DNS query lookup failure.
0x13	Socket leak
0x20	Bad handle.
0x21	User closed.
0x22	Unknown server - DNS lookup failed.
0x23	Connection lost.
0x24	Unknown.
0xFF	No known status.

The following table provides the parameter's meaning when IP = 1 or 4 for TCP connections.

Parameter	Description
0x00	The socket is open.
0x01	Tried to send but could not.
0x02	Invalid parameters (bad IP/host).
0x03	TCP not supported on this cellular component.
0x10	Not registered to the cell network.
0x11	Cellular component not identified yet.
0x12	DNS query lookup failure.
0x13	Socket leak
0x20	Bad handle.
0x21	User closed.
0x22	No network registration.
0x23	No internet connection.
0x24	No server - timed out on connection.
0x25	Unknown server - DNS lookup failed.
0x26	Connection refused.
0x27	Connection lost.
0x28	Unknown.
0x2F	TLS Socket Authentication Error
0xFF	No known status.

The following table provides the parameter's meaning when IP = 2 for SMS connections.

Parameter	Description
0x00	SMS successfully sent.
0x01	SMS failed to send.
0x02	Invalid SMS parameters - check P# (Destination Phone Number).
0x03	SMS not supported.
0x10	No network registration.
0x11	Cellular component stack error.
0x12	A modem update is in-progress. Try again after its completion.
0xFF	No SMS state to report (no SMS messages have been sent).

0 - 0xFF (read-only)