AT&T MERLIN LEGEND Communications System PBX System Planning Manual page 123

Features
See "Call Types" in this chapter for
information on QCC operator
assignments.
4-18 Group Assigned Features
Group Cover buttons are programmed on the receiver telephone for each
coverage group whose calls are covered. Only Group Coverage receivers with
display telephones can identify the individual sender. Non-display users can
determine only that a call is from the coverage group.
Three types of receivers can be programmed:
Multiline telephones. A maximum of eight Group Cover buttons can be
programmed for each coverage group. All eight can be programmed on one
multiline telephone, or the Group Cover buttons can be distributed over up to
eight multiline telephones.
A single receiver can have more than one Group Cover button for the same
coverage group; however, each programmed button is counted in the eight
Group Cover button maximum for the group.
QCCs cannot be programmed as Group Coverage receivers.
Note: Single-line telephones cannot be programmed individually as Group
Coverage receivers; however, if a single-line telephone is programmed as a
member of a calling group, it can receive Group Coverage calls.
A receiver can program each Group Cover button for immediate ring,
delayed ring, or no ring.
QCC queue. Up to four QCC operators can be assigned to receive calls for
each coverage group. The QCC queue can be programmed as the only
receiver or can be programmed in addition to the Group Cover buttons oh
multiline telephones; it is not counted in the eight receiver maximum.
When the QCC queue is assigned as a receiver, the calls enter the queue
and are delivered to an available QCC operator.
Calling groups. If a calling group is programmed as a receiver for a
coverage group, it can be the only Group Coverage receiver for the group.
No other types of group receivers can be programmed; however, both
primary and secondary Individual Coverage receivers can be assigned.
When a calling group is assigned a receiver, the calls enter the calling group
queue and are delivered to the first available member. Since calls are sent to
the queue, Cover buttons are not needed.
When a calling group or the QCC queue is programmed as a receiver, or both
Individual and Group Coverage are programmed for a sender, Group Coverage
has a system-wide Cover Delay Interval. The delay interval is the number of
rings before a call is sent to the receiver.
Assign Group Coverage when more than one sender requires the same
coverage arrangements—for example, for all members of a department whose
calls are answered by a secretary. Also consider assigning more than one
Group Cover button on one receiver's telephone (for example, on a DLC) if a
coverage group is expected to get large numbers of calls.
You can assign up to 30 coverage groups, each with an unlimited number of
members. Coverage senders can be a member of only one group.