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AT Commands Reference Manual Table 6-6. Events Detectable in the Voice Mode per V.253 Event Number Event Description Event Reporting 0 Caller Id Report Message 1 DID Report Message 2 Distinctive Ringing Pattern 3 RING Simple 4 DTMF Received Simple 5 Receive Buffer Overrun Simple 6 Facsimile Calling (e.g., 1100 Hz) Simple 7 Data Calling (e.g., 1300 Hz) Simple 8 Local Phone On/Off-hook Simple 9 Presumed Hangup (SILENCE) Time-out Simple 10 Presumed End of Message (QUIET) Time-out Simple 11 SIT Signal Simple, Message 12 Bong Tone Simple 13 Loop Current Interruption Simple 14 Loop Current Polarity Reversal Simple 15 Call Waiting Beep/Interrupt Simple 16 Distinctive Call Waiting Pattern 18 Ringing Tone Simple 19 BUSY Simple 20 DIAL TONE Simple 21 Reorder/Fast Busy Simple 22 V.21 Channel 2 7E flags Simple 23 Transmit Buffer Underrun Simple 24 Extension Phone On/Off-hook Simple 25 Facsimile or Data Answer (e.g., 2100 Hz) Simple 26 Data Answer (e.g., 2225 Hz) Simple 27 Voice Detect Simple 29 Stuttered Dial tone Simple (note 1) 30 Invalid Voice Data Format Simple 31 Lost Data Detected Event Simple 32 Facsimile Answer Simple Legend: This table lists events without any regard as to whether the DCE reporting of the event is optional or mandatory, and without assigning a DCE reporting mechanism. The first column lists the event number assignment for each event. The event number also serves another purpose; each number is a bit position in a bit field. Event number 0 is the most significant bit of the left most hex number in a hex representation (V.253 defines a total of eight hex digits). The final bit in the bit field occupies the least significant bit position of the right-most hex number. The bit representations of the event numbers are used in the +VLS= command. The third column lists whether a single character is enough to report the event, or if the DCE must supply a more complicated report. The description Simple indicates a single character response (<DLE> shielded), Message indicates a full text message (<DLE><X> packet), and Pattern indicates a repeating Message. Notes: 1. The use of complex event reporting for Stuttered Dial tone is for further study. 100722B Conexant 6-13
