System features - Hytel keysystems

1 Pair Connection	Day/Night Service	SMDR*
2B+D Digital Extensions	Dialing Type Selection	PC Remote Programming*
Alarm Clock	Direct Inward System Access	Least Cost Routing
Attendant	External Call Forward	Tenant Groups
Authority Code	External Music Source*	Voice Mail*
Background Music	External Paging*	Auto Attendant*
Battery Back-up	Hold Reminder	Door Phone*
Battery Backup(memory)	Line Assignment	Door Release*
Camp on busy line	Line Group	Hunt Groups
Class of Service	Line Type Assignment	Tenant Groups
Conference	Loud Bell Control*