ZyXEL Elite 2864 User Guide - Page 193

The DCE returns the OK result code if the DCE accepts this command, or it returns the ERROR result code if the value is out of range. • AT+VRN? The DCE returns the current Ringback Never Appeared Timer interval value followed by the OK result code. • AT+VRN=? The DCE will return the permitted interval for the Ringback Never Appeared Timer. The response is: 0-255 OK • AT+VSD=, This command causes the DCE to set the silence detection sensitivity and the required period of silence before the DCE can report silence detected at the end of a voice receival either with the "Presumed End of Message" (QUIET) or "Presumed Hang-up" (SILENCE) event reports. : DCE silence detection threshold level; a larger value of this subparameter implies that the DTE wants the DCE to treat noisier conditions as silence. The actual value of this subparameter has no physical meaning. The range of the sensitivity is from 0 to 31. A value of zero disables the silence detection. The default value is 15. : The required period of silence before the DCE can report silence detected either with the "Presumed End of Message" (QUIET) or "Presumed Hang-up" (SILENCE) event report. A value of zero disables the DCE silence detection. The range of the interval is from 0 to 255 in units of 0.1 seconds. The default value is 70 (7 seconds). The DCE returns the OK result code if the DCE accepts this command, or it returns the ERROR result code if or is out of range. • AT+VSD? This command causes the DCE to report current and settings. The form of the response is: , OK • AT+VSD=? This command causes the DCE to report the permitted range of and . The response is: (0-31),(0-255) OK 16-17