In ringing service... you tell which set controls controls the ringing service of a line. That set must be the one to invoke the service (F871). By default all lines are controlled by 221, but this may have been changed at some point or you activating night service by something other than 221.


Marv CCNA, CTUB
TeleMarv Services (Retired)
Providing telecommunication solutions in Ottawa Canada since 1990