Mobile Terminated SMS Delivery Status

MT SMS Message States

There are six possible MT SMS message states.

• "IDLE" - An SMS message has not been successfully sent from the test set since power-up, preset, or SMS clear.
• "SEND" - The test set has initiated the process of sending an SMS message.
• "ACK" - The SMS message sent by the test set was acknowledged by the mobile station before timeout.
• "NACK" - The SMS message sent by the test set was NOT acknowledged by the mobile station and send timeout.
• "REJ" - The SMS message sent by the test set was rejected by the mobile station. A cause value for the reject is also reported by the mobile station. See Reject Cause .
• "FAIL" - A command to send an SMS message has been received by the test set, but it cannot send the SMS message over the air because of an error. An example of a situation that would produce such an error is if the mobile station is not connected to the test set.

Using the GPIB Interface

The CALL:SMService:PTPoint[:MTERminated]:SEND:STATe? query returns a string indicating the state of the last message sent from the test set to the mobile station.

If the delivery status returned is "REJ", you can use the CALL:SMService:PTPoint[:MTERminated]:RCAuse? query to retrieve the reject cause value returned by the mobile station. See Reject Cause for the meanings of the possible cause values.

Using the HTTP Interface

The state of the last MT SMS message sent from the test set to the mobile station can be queried from the test set using an HTTP GET request with the following URL:

/sms/mtstate

The delivery state is returned in the body of the HTTP response.

Example using an internet browser

You can query the MT SMS delivery state through the HTTP interface using an internet browser by entering the following URL:

http://<x.x.x.x>/sms/mtstate

where <x.x.x.x> is the IP address of the test set sending the SMS to the mobile station. This example is illustrated in the following figure.

If the state returned is "REJ", the body of the HTTP response also contains the reject cause value as an integer. The reject cause value is placed in the response body after the REJ characters and separated from them by a single space character. For example, "REJ 211" is returned in the HTTP response if the MT SMS was rejected with a cause value of 211. See the following figure.

See Reject Cause for the meanings of the possible cause values.

Reject Cause

Related Topics

Mobile Terminated SMS (MT SMS)- Sending a Message to the Mobile Station

Call Processing Status