I have an IP Office 406 and an old Lucent (AT&T) 8110M telephone from our old Merlin Ledgend system. Which system is used to trigger the message waiting light? My choices are:
101V
51V Stepped
81V
Line Reversal A
Line Reversal B
On
...or none of the above? I'd experiment, but if V means "Volts", some of these choices look like they have the potential to damage a phone
101V
51V Stepped
81V
Line Reversal A
Line Reversal B
On
...or none of the above? I'd experiment, but if V means "Volts", some of these choices look like they have the potential to damage a phone