Instruction manual

Flexible Trunk to Trunk Connections Page 1555 of 3156
Features and Services
Operating parameters
Flexible Trunk to Trunk Connections is configured at a set level, by defining
the Class of Service (CLS) prompt in Overlays 10 or 11.
All existing telephone sets default to a Class of Service of Flexible Trunk to
Trunk Connections Unrestricted (FTTU) upon initial software conversion.
When new telephone sets are added and configured, they default to a Class of
Service of Flexible Trunk to Trunk Connections Conditional (FTTC).
In the Customer Data Block, Flexible Trunk to Trunk Connections Options
can be set to Trunk Barring Flexible Trunk to Trunk Connections (TBFT) and
Flexible Trunk to Trunk Connections Trunk Barring (FTTB) only when the
Trunk Barring is configured. Flexible Trunk to Trunk Connections Options
(FTOP) is set to the default, Flexible Trunk to Trunk Connections Restricted
(FRES), to maintain the existing functionality.
A telephone set with a Class of Service of Flexible Trunk to Trunk
Connections Restricted (FTTR) cannot initiate a Conference call to an
outgoing trunk, although it can be included in a conference. If this type of
telephone set is the last set to disconnect from the conference, the call is
ended. The established trunks are released.
If a conference is on hold and an additional telephone set attempts to join the
conference over a barred trunk route and through a telephone set that has
Class of Service set to Flexible Trunk to Trunk Connections Restricted
(FTTR), then Flexible Trunk to Trunk Connections does not permit a
consultation connection. This is as per the existing operation.
If more than two trunks are involved in a call and all internal calls drop from
the conference, Flexible Trunk to Trunk Connections does not affect the
Conference disconnection.
Multiple Appearance, Single Call Arrangement DNs allow a single call to be
active on the DN, regardless of its number of appearances. If the Single Call
Ringing DN is established in a call, another appearance of the DN can enter
into the call, if the Privacy feature is not in effect, by going off hook or by
pressing the Multiple Appearance Single Call DN key. Flexible Trunk to
Trunk Connections restrictions for Conference are applicable in such a case.