When the modem disconnects from the telephone line, it generates and saves a Disconnect Reason message. To display the Disconnect Reason message for the most recent disconnected call, issue the ATI5 command in your communications application. One of the following messages appears.
Disconnect Reason Message |
English: |
None |
DTR DROP |
ATH RECEIVED |
REMOTE DISCONNECT |
OFF-LINE TEST |
TRAINING FAILURE |
EC LOCAL REQUEST |
ALREADY CONNECTED |
DIAL ABORTED |
BUSY TONE DETECTED |
NO DIALTONE |
DIAL ABORTED - INCOMING CALL |
IMPROPER DTR STATE |
PHONE NUMBER BLACKLISTED |
RETRAIN THRESHOLD |
SEMICOLON DETECTED |
ABT TIMEOUT - NO RINGBACK |
ABT TIMEOUT - RING BACK RECEIVED |
ABT TIMEOUT - NO CALL PROGRESS |
ABT TIMEOUT - NO ANSWER |
BUSY AFTER RING BACK |
EC - TRANSMISSION LIMIT |
EC - REMOTE REQUESTED |
EC - NO VALID PACKET RECEIVED |
EC - ESTABLISHMENT ERROR |
EC - ACCEPTOR TIMEOUT |
EC - NEGOTIATION FAILURE |
EC - PROTOCOL VIOLATION |
EC - BAD PARAMETER |
EC - DATA COMPRESSION ERROR |
FSK RELIABLE INVALID |
DTE INACTIVITY TIMEOUT |
EC REMOTE NO PSTN |
RETRAIN TIMEOUT |
VOICE DISCONNECT - VLS = 0 |
VOICE TO FAX/DATA SWITCH |
UNKNOWN |
Table 1: Disconnect Reasons and Codes