ZyXEL Elite 2864 User Guide - Page 192

The DCE returns the VCON result code (returns OK if S48.5=1) if the DCE accepts this command, or it returns the ERROR result code if the value is not permitted. • AT+VLS? The DCE will return the current I/O device followed by the OK result code. • AT+VLS=? The DCE will return permitted I/O devices. The response is: 0,1,2,8,16 OK • AT+VRA= The DCE only uses this command in a call origination transaction. This command sets the amount of time the DCE shall wait between ringbacks before the DCE can assume that the remote station has gone off-hook. The default value is 70 (7 seconds). The range of is from 0 to 255. The units are 0.1 seconds. A value of zero forces the DCE to return the OK result code immediately after the first ringback. The subparameter refers to the silence interval length between the end of one ring interval and the start of the next ring interval. The DCE returns the OK result code if the DCE accepts this command, or it returns the ERROR result code if the is out of range. • AT+VRA? The DCE will return the current Ringback Goes Away Timer interval value, followed by the OK result code. • AT+VRA=? The DCE will return the permitted interval of the Ringback Goes Away Timer. The response is: 0-255 OK • AT+VRN= The DCE only uses this command in a call origination transaction. This command sets the amount of time the DCE will wait looking for a ringback. If the DCE does not detect a ringback within this time period, the DCE assumes that the remote station has gone off-hook, and returns an OK result code. A +VRN setting higher than the value in the S7 register means that only the S7 timer is in effect. The range of is from 0 to 255. The unit is 1 second. The default value is 10 (10 seconds). A value of zero forces the DCE to return OK immediately after dialing. 16-16