X11 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.ഊPage 1542 of 3134 Flexible Trunk to Trunk Connections
As per the existing operation, answer and disconnect supervision is a
requirement for Transfer and Conference.
Flexible Trunk to Trunk Connections does not support Basic Rate Interface
(BRI) telephone sets or Attendant Console operations.
Flexible Trunk to Trunk Connections supports Analog and ISDN trunks.
R2MFC and AC15 signaling is also supported. Flexible Trunk to Trunk
Connections does not support Service trunks, such as Recorded
Announcement (RAN), Paging (PAG), Dictation (DIC), Music (MUS), and
Automatic Wake Up Recorded Announcement (AWR).
Call Redirection features are not supported with Flexible Trunk to Trunk
Connections.
With Flexible Trunk to Trunk Connections, unless the Trunk to Trunk
Connection feature is configured, two outgoing trunk connections are
blocked for Transfer and unsupervised Conference.
Customer Controlled Routing (CCR), Meridian Link, and Application
Module Link (AML) applications are not affected by the Flexible Trunk to
Trunk Connections feature.
Note: When adding a new telephone set, the default Class of Service is
Flexible Trunk to Trunk Connections Conditional (FTTC). This could
impact an application’s ability to conference or transfer a call to an
outgoing trunk. In the case where this functionality is required, the Class
of Service must be changed on the set to Flexible Trunk to Trunk
Connections Unrestricted (FTTU).
Flexible Trunk to Trunk Connections blocks the initiation of Conference.
Applications, such as Break In, Barge In, Bridging, and Overriding, are not
supported.