User`s guide
1(4)
Datum/Date Rev
Dokumentnr/DocumentnrUppgjord/Prepared
Dokansv/Godkänd - Doc respons/Approved Kontr/Checked Tillhör/Referens-File/Reference
98-01-27 B
300/155 34-ASB 150 02 Uen
FACILITY DESCRIPTION
Faktaansvarig - Subject responsible
SEA/TB/MP T.Preißner
SEA/TB/MP ASB 150 02
SEA/TB/XE
KEY SYSTEM FUNCTION
Definition
A key system denotes a system in which all or selected
trunks are directly represented on system telephones
by means of external line keys.
Use
The function is used when it is desired to employ all or
parts of ASB 150 02 as a key system, so that
extension users have a complete overview of the
trunks belonging to the group.
Grouping of trunks
The system can easily be divided into several mutually
independent key-system groups.
Each trunk can be assigned to any key on any system
telephone.
Types of ring signals
An incoming call on a represented trunk can be given
an optional type of ring signal:
• No ring signal
• Repeated ring signal
• Single ring signal
• Delayed repeated ring signal
• Delayed single ring signal
A typical example of use can be that those trunks that
are foremost to be answered by the user are assigned
a repeated ring signal whereas other trunks can be
assigned a single delayed ring signal as indication that
the call has not been answered by another extension.
Other trunks can only be monitored and are not
assigned any ring signal.
Incoming DID calls
There are 2 possibilities how an incoming DID-call is
presented on an external line key.
• No difference if the incoming call is a DID-call or
not. (DID calls can also be picked up on the ex-
ternal line key.)
• Blocking the pick up functionality on the external
line key in case of a DID call
Operation
ECONOMYplus -, STANDARD - and EXECUTIVE
Telephones
Incoming calls
The call is signalled on all telephones on which the
trunk is represented.
The line lamp flashes rapidly.
A ring signal is issued if this has been programmed for
the key.
A call via a trunk is not shown on the display.
Answer
• Press key for calling trunk.
Associated lamp flashes to confirm
connection.
If the answering telephone has a display,
trunk number will be shown:
EXECUTIVE Telephone
10 Jul 14:40 +15˚
EXTERNAL 703 SPEECH
300.fm
Database reference










