User`s guide

1(4)
Datum/Date Rev
Dokumentnr/DocumentnrUppgjord/Prepared
Dokansv/Godkänd - Doc respons/Approved Kontr/Checked Tillhör/Referens-File/Reference
97-10-31 C
180/155 34-ASB 150 02 Uen
FACILITY DESCRIPTION
Faktaansvarig - Subject responsible
SEA/TB/MP T.Preißner
SEA/TB/MP ASB 150 02
SEA/TB/XE
EXTERNAL LINE KEY
Definition
External line key is one of the traffic functions that can
be assigned to the programmable keys on any digital
Telephone.
An optional trunk can be represented on each key.
The help of an external line key gives the extension
user a feeling of having direct access to the trunk.
This function is especially useful when the system is
entirely or partly to be used as a key system or as a
private trunk line.
Operation
Incoming calls
A call is signalled by the trunk's lamp which starts to
flash rapidly.
If the extension is free, the acoustic ring signal that has
been programmed for the key will be received.
If the extension is busy with another call, a short,
muted ring burst will be supplied. (Not applicable if the
key has been programmed not to ring).
A call via an external line key is not shown on the
display.
Answer
The call is answered by the user as follows:
• Press external line key whereupon lamp shows
connecting control-flashing.
Ring signal ceases and extension obtains
speech connection with caller.
If the telephone has a display, this will show for
example:
EXECUTIVE Telephone
STANDARD Telephone
Is the system connected to an ISDN trunkline, you will
also get the national significant number of the external
calling party presented on the display
(further information see ISDN - Supplementary
service CLIP in doc. 268 / 155 34 - ASB 150 02 Uen )
Outgoing calls
A call is initiated as follows:
• Press key in idle state, that is, when lamp is
extinguished.
Lamp shows connection control.
Caller hears external dial tone and can then dial
relevant external number
Analogue trunk line
The display shows the dialled digits:
EXECUTIVE Telephone
STANDARD Telephone
10 Jul 14:40 +15˚
EXTERNAL 705 SPEECH
10 Jul 14:40 +15˚
EXTERNAL 203 S
10 Jul 14:40 +15˚
1234567123
save
10 Jul 14:40 +15˚
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180.fm
Database reference