User guide

Part 7 – Appendixes Appendix A – Response Messages and Error Codes
Universal IP AT Commands Reference Guide (Document S000457H) 98
Appendix A – Response Messages &
Error Codes
Response Messages
Standard AT Messages
Numeric Verbose Description
0 OK Operation or command success
3 NO CARRIER No physical layer connection
7 BUSY Destination busy
8 NO ANSWER No answer from destination
4 ERROR Operation or command unsuccessful
2 RING Incoming call indication
Information Messages
Numeric Verbose Description
1025 Ok_Info_DataBegin Start of data
1028 Ok_Info_WaitingForData Send data
3074 Ok_Info_SocketClosed Socket connection closed successfully
3072 Ok_Info_NoMail No mail to retrieve on server
3073 Ok_Info_Mail Mail ready to be retrieved on server
3077 Ok_Info_PPP PPP connection successful