Aastra Ascotel IntelliGate A150 System Manual page 154

System Functions and Features as of I7.9
Call destination: Busy User Group
A user group is busy if all its members are busy, if call waiting is rejected, if call wait-
ing is not enabled for any of the user group members and if neither the element
Operator Console nor the element General Bell is activated.
A UG with activated
side call or an internal call (see
If a user group is busy, an incoming call is routed to user group 16. If user group 16
is also busy,
• the caller in the public ISDN network will obtain the congestion tone after call
waiting has been rejected;
• the caller in the private leased-line network will obtain the congestion tone.
• a call from the public analogue network will wait until the user is free after call
waiting has been rejected.
Fig. 67 Call distribution if user group busy
154
Home Alone is busy if at least one of the UG's users is in an out-
"Home alone", page 467).
Call routing