HP Pavilion 8700 HP Pavilion PC's - PCTEL V.90/K56Flex Series AT Command Guide - Page 37

AT Command Guide Shielded Codes Code Sent to DTE 0 - 9, *, #, A - D a b c d e f h q Meaning DTMF Digits 0 through 9, *, #, or A through D detected by the modem. Answer Tone(CCITT) Sent to the DTE when the V.25/T.30 2100 Hz Answer Tone (Data or Fax) is detected. If the DTE fails to react to the code, and the modem continues to detect Answer tone, the code is repeated as often as once every 0.5 second. Busy Sent to DTE when the busy cadence is detected. The modem sends the busy b code every 4 seconds if busy continues to be detected and the DTE does not react. This allows the DTE the flexibility of ignoring what could be a false busy detection. Calling Tone Sent when the T.30 1100 Hz Calling Tone (Fax Modem) is detected. The modem assumes the calling tone is valid and sends this code only after 4 seconds of proper cadence has been detected. If the DTE does not react to this code, the code is repeated as often as once every 4 seconds. Dial Tone Sent in Voice Receive Mode when dial tone is detected after any remaining data in the voice receive buffer. The modem sends this code every 3 seconds if dial tone continues to be detected and the DTE does not react. This allows the DTE the flexibility of ignoring what could be false dial tone detection. European Data Modem Calling Tone Sent when the V.25 1300 Hz Calling Tone (Data Modem) is detected. The modem assumes that the calling tone is valid, and sends this code only after 4 seconds of proper cadence has been detected. If the DTE does not react to this code and calling tone continues, the code is sent again as often as once every 4 seconds. Bell Answer Tone Sent when Bell 2225 Hz Answer Tone (Data) is detected. If the DTE fails to react to the code and the modem continues to detect Answer tone, the code is repeated as often as every 0.5 second. Hung Up Handset Sent immediately when the modem detects that the local handset has hung-up. Quiet Sent in Voice Receive Mode after any remaining data in the receive voice buffer when the silence detection timer (#VSP) expires and the voice data has been passed to the DTE. 37 V90K56DOCATC11A