Panasonic kx-ns500 Pc Programming Manual page 237

Value Range
Disable, Enable
CNG Signal Effective Detection Width 1 (ON)
Specifies the length of time that the PBX detects the CNG signal.
Value Range
20–5000 ms
CNG Signal Effective Detection Width 2 (OFF)
Specifies the length of time that the PBX waits until another CNG signal is detected.
Value Range
20–5000 ms
CNG Signal Fixation Detection Counter
Specifies the number of times the CNG signal must be detected before the PBX proceeds the fax operation.
Value Range
1–3
CNG Signal Fixation Detection Pattern
Specifies whether or not the Unified Messaging system will respond to CNG signals.
Value Range
OFF, ON
9.5 PBX Configuration—[1-1] Configuration—Slot—UM Card Property
PC Programming Manual 237