NEC 750370 manual Section SET Incoming Call Timing

Issue 3	EliteMail VMS/EliteMail Limited
	These minimum values, stored on Line 5 of Switch Setup screen Page 1,
	are specified in hundredths of a second (e.g., 6 means ignore tones
	shorter than 6 hundredths of a second or 60 milliseconds).
	Unless you experience problems with the system failing to recognize
	touchtones, do not change these values. If you experience this problem,
	try reducing the prompt DTMF length by one unit at a time until the voice
	mail system consistently recognizes dialed touchtones. The minimum
	value is 4 (40 milliseconds).
SECTION 7
SET INCOMING CALL
TIMING	The following fields affect the voice mail system response to an incoming
	ring signal. There is no need to adjust these values unless the voice mail
	system fails to answer incoming calls. All timing fields are in hundredths of
	a second (e.g., 50 is one-half second).
	Release on LCR
	Tells the voice mail system whether or not to assume the caller has
	hung up when it receives a loop current reversal signal from the NEC
	Electra Elite telephone system.
	Answer on Ring Low
	Tells the voice mail system whether or not to wait through a complete
	ring on incoming calls before answering.
	Off-hook Delay
	Tells the voice mail system how long to wait after answering the
	telephone before speaking or accepting touchtones.
	Ring-on Time/Ring-off Time
	Incoming calls send a ring signal to the voice mail system with a
	voltage alternating on and off. Line 7 specifies the time (in tenths of a
	￿second) of the on and off periods in the ring cycle.
	Pooled Delay
	This field is not used with Electra Elite.

21 - 6 Switch Setup