ZyXEL Elite 2864 User Guide - Page 183

L (0x4C) r (0x72) b (0x62) d (0x64) u (0x75) a (0x61) Event Report Description Loop current polarity reversal. This may indicate a hang-up or other events depending on the implementation of the central office. Ringback. BUSY. If the DCE continues to detect a BUSY signal, it may report this event repeatedly. The delay between reports is 4.0 seconds. DIAL TONE. If the DCE continues to detect a DIAL TONE, the DCE may report this event repeatedly. The time interval between reports is 4.0 seconds. Transmission Buffer Underrun. The DCE will report this code if the DCE's buffer becomes empty without first receiving a or a command. Data answer tone. The delay between reports is 4.0 seconds. Action Commands in Voice Data State The DTE may initiate actions by inserting a shielded code into the data to the DCE. The form of the action is , whereby can be one of the possible character values listed in the following table : (0x0) (0x10) (0x1A) u (0x75) d (0x64) p (0x70) r (0x72) Action Command Description Does nothing. The DTE can use the code to refresh the DTE/ DCE Inactivity Timer, instead of XON. Two contiguous codes indicate that a single is in the data stream. is in the data stream. Pumps up the volume or gain by one unit. Pumps down the volume or gain by one unit. Pauses Transmission Data State: The DCE suspends sending analog data to the currently selected analog destination. While pausing, the DCE will maintain the contents of its internal transmission buffer and the state of its compressors, continue in the Data State, and send silence to the analog destination. Resumes Transmission Data State: The DCE resumes sending the contents of the DCE buffer to the currently selected analog destination. Before resuming sending the analog signal to the analog destination, the DCE will not reset the contents of its internal transmission buffer, nor reset the compressors. 16-7