Bell 6B KTS Manual page 7

• Generates required system tones
•
Switches the tones to the talking links
•
Interfaces the control signals from the line
and station circuits to the controller
• Switches the TOUCH-TONE receiver to the
talking links as required
•
The timing generator produces timing signals
required by the system, such as lamp flash
SSP 518-41 1·100-i01_1978-08-07.jpg
68
KEY TELEPHONE SYSTEM O P TIONS
OPTION
A - Continuous
Ring
B - Interrupted
Ring
C - Single-spurt
Audible Ringback
D - Repeated Audible
Ringback
E - Fast Disconnect
(CSBR)
F - Slow Disconnect
(ESS Office)
- Without Paging
G
Access
H - With Paging
Access
J - Two Station Override
K - Ten Station Override
Notes:
1. If HF AI is provided, install option A for station involved. If one of
paired circuits has option A, other stations will have it
2. If any station has HF AI, system must have option
3. The Paging Access and Override Option switches are located on the rear
of the 572A1 KSU.
Scanned by Fra n k Harrell, (Cowboy Frank) Castle Rock, Colorado Oct 1S, 2012 20:56:50
TABLE D
KTU OPTION PLUG OR SWITCH POSITION
A-B (1st and 2nd stations)
484A D-E (3rd and 4th stations)
(Note 1)
B-C (1st and 2nd stations)
E-F (3rd and 4th stations)
A-B,D-E
486A
(Note 2 )
B-C, E-F
B-C (1st Circuit)
488A E-F (2nd Circuit)
A-B (1st Circuit)
D-E (2nd Circuit)
Paging
Switch Off (Factory-provided)
Access
Switch
(Note 3)
Switch ON
& 11 " (Factory-provided)
"10
Override
Switch
" 10-19"
(Note 3)
C.
and lamp wink, and also sets other system
timing standards.
Refer to Table B for an outline of the tones used
in the 6B KTS. The 486A KTU is installed in J3.
D. 487A KTU- Battery Feed Circuit
Each 487A KTU provides the de voltages
2 . 1 7
for two links.
links is installed in J4; if a third and fourth link
is provided, another KTU must be installed in J5.
ISS 1 , SECTION 5 1 8-4 1 1 - 1 00
The KTU for the first two
Page 7