SECTION 518-4 il- 1
00
but t..;O/PBX
calls cannot be originated using the
6B K'l'S.
Note:
More than 52 stations can be installed
by having stations share a code. Only two
stations per code are permitted and only even
numbered codes should be bridged.
With
this limitation there can only be six sets served
per station circuit (484A KTU).
2.02
All required key telephone units (KTUs) are
mounted in a 572A1 key service unit (KSU).
The KSU includes an integral 206A power supply,
but 24-volt dirert current and 10-volt alternating
current and their associated grounds must be
supplied from the associated key system or a
separate power supply.
2.03
All wiring, except power, is brought into
the 572A1 KSU through connector cables
plugged into the rear of the unit. An optional
184Cl backboard has been developed as a terminal
field for the 6B KTS, or existing blocks in the
yellow field of a centralized key system can be
used.
2.04
The 6B KTS can be added as an adjunct to
any key telephone system using A-lead control
such
as
the 1A1 or 1A2 KTS. Only one button is
required on key telephone sets (rotary o r
'!'OUCH-TONI•}• dial). Modification o f the HOLD
key wiring and
a
separate 10-volt ac audible signal
are required in the telephone sets used with the
68
KTS. Nonkey sets can be used, but they will
not supply those features involving the HOLD key.
A
502/2502I3M telephone set can be used as an
intercom only set with the 6B KTS. Off-premises
stations can be added to the 6B KTS but require
a separately provided long line circuit.
2.05
'l'he basic system provides the following
features:
•
In tucom call progress tones such as dial
tone, ringback, error tone, etc.
•
Repeated ringing-the intercom audible is
blccked at busy stations
•
3- or 4-party conferencing
•
Do-not-disturb (DND)
•
Call transfer
l'age
2
•
Call add-on
•
Station and consultation HOLD
•
Two-link operation-the register is held
during dialing only
•
System busy indication
•
Privacy-except when override is activated
•
Single button appearance on key telephone
sets
•
Call forwarding
•
Override-permits certain stations to bridge
onto an established intercom connection or
override DND.
•
Remote Answer-permits user at one station
to intercept and answer a call intended for
a second station.
•
Automatic call-back-enables a user who
dials a busy station to program the system
to call back when both stations are idle
and a link is available.
2.06
Additional features that can be supplied on
an optional basis are:
•
Additional links-to a maximum of four.
•
Paging access.
•
CO/PBX line access when the line is in the
ringing or hold state. CO/PBX calls cannot
be originated through the 6B KTS. CO/PBX
calls can also be transferred between 6B
stations, or other station(s) can be added
onto a call.
•
Attendant recall.
•
Hands-free answer on intercom and voice
signaling using a separate station adjunct.
•
TOUCH-TONE service.
•
Off-premises stations.
2.07
Features (standard and optional) are activated
by operation of the station HOLD key, line
BSP 518-411-100-i01_1978-08-02.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Oct 15, 2012 20:55:15
