User`s guide

1(2)
Datum/Date Rev
Dokumentnr/DocumentnrUppgjord/Prepared
Dokansv/Godkänd - Doc respons/Approved Kontr/Checked Tillhör/Referens-File/Reference
98-01-26 A
116/155 34-ASB 150 02 Uen
FACILITY DESCRIPTION
Faktaansvarig - Subject responsible
SEA/TB/MP T.Preißner
SEA/TB/MP ASB 150 02
SEA/TB/X
AUTOMATIC CALLBACK -
TRUNK/ROUTE
Definition
An extension that, on a call to an individual trunk or
route, encounters busy can order automatic callback.
When the order is made the system initiates
supervision of both the caller and, the selected route
or trunk.
When the relevant trunk or an optional trunk in the
relevant route goes free the extension that ordered
callback will be called back.
On activation of callback a new call will be initiated
automatically on the selected trunk at the same time
as the ordering extension is called.
Use
External callback is a function that is utilised when one
wishes to initiate an outgoing call but finds that all
trunks are busy.
In the event of several orders, e.g. for the same route,
the orders will be processed in the order in which they
were received.
During the monitoring period the ordering extension
user is free to use his telephone.
Operation
To order
An extension who on initiation of a call encounters
busy tone can order callback by keying digit "5" or
other selected digit.
A user with an EXECUTIVE telephone can press
menu key call-back to activate the function.
When the system has accepted the order the ordering
extension hears verification tone or silence.
If the order is rejected, busy tone will continue.
Callback
When the trunk and ordering extension are free at the
same time, the latter will be rung with a special ring
signal at the same time as the selected trunk is seized
to prevent incoming calls.
The call is presented on Line 1 or Line 2 as a normal
internal call.
When the extension user answers he or she hears
internal dial tone and the display goes blank.
The extension can now dial the route number followed
by the number of the relevant public network
subscriber.
If the extension fails to answer the callback within
8 seconds, the supervised trunk will be released at the
same time as the ring signals cease.
Capacity
A maximum of 25 callback monitoring tasks can be
stored in the system concurrently.
116.fm
Database reference