User`s guide

2(3)
Datum/Date Rev
Dokumentnr/DocumentnrUppgjord/Prepared
Dokansv/Godkänd - Doc respons/Approved Kontr/Checked Tillhör/Referens-File/Reference
98-01-27 A
262/155 34-ASB 150 02 Uen
FACILITY DESCRIPTION
Faktaansvarig - Subject responsible
Key-system
Using a key-system it is possible to answer calls to a
certain trunk from any extension.
On each system telephone on which the trunk is
represented the associated lamp will flash when an
incoming call exists.
On each telephone that is to be a member of the group
it is necessary to program an external line key for each
trunk that is to be answered.
In this case the trunk is not assigned an answering
position.
See also under "KEY-SYSTEM FUNCTION",
document 300/155 34-ASB 150 02 Uen.
ACD-group as answering position
If the trunk is to be included in an ACD- (Automatic
Call Distribution)-route, the directory number of the
ACD-group is to be programmed as answering
position.
See also ACD-GROUPS, document
105/155 34-ASB 150 02 Uen.
Direct InDialling (DID)
For direct indialling trunks the customary answering
position shall not normally be programmed.
The directory number that is to handle redirected calls
in the event of no reply, e.g. the OPERATOR queue is
stated as alternative answering position.
See also DIRECT INDIALLING (DID),
document 162/155 34-ASB 150 02 Uen.
Operation
See under relevant facility description.
Capacity
The number of incoming trunks is limited by the
number of voice (speech) channels (60).
Limitations
Incoming calls on trunks are always presented on pro-
grammed external line keys even if an individual
answering position has been programmed.
New incoming calls are directed to an individual
answering position if one has been programmed. If no
individual answering position exists, the trunk call is
directed to the alternative answering position.
Special limitations for an ISDN trunk
Most of the features described under the item USE are
related to anlagoue trunks or digital CAS lines without
DID.
This will also work in conjunction with an ISDN-
trunkline without subscribtion of the supplementary
service DID.
In case of outgoing traffic it is possible in ASB 150 02
to create groups of B-channels for defined purposes
( e.g. tenant groups or ACD groups) but it depends on
the national network operator if this is also supported.
In case of incoming traffic it is not possible to assign
B-channels to specific groups.