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Disconnect Reasons and Codes:   Motorola SM56 Software Modem User's Guide

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

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