9
FFT-1000 INSTALLATION MANUAL-5409205-REV A 4/21
Class B Phone Circuits
Switch 1
Switch 2
Switch 3
Switch 4
Circuits
# of FSB-24
# of FFT-EXP
OFF
OFF
OFF
OFF
1-24
1
0
ON
OFF
OFF
OFF
25-36
2
1
OFF
ON
OFF
OFF
37-48
2
2
ON
ON
OFF
OFF
49-60
3
3
OFF
OFF
ON
OFF
61-72
3
4
ON
OFF
ON
OFF
73-84
4
5
OFF
ON
ON
OFF
85-96
4
6
Class A Phone Circuits
Switch 1
Switch 2
Switch 3
Switch 4
Circuits
# of FSB-24
# of FFT-EXP
OFF
OFF
OFF
OFF
1-12
1
0
ON
OFF
OFF
OFF
13-18
1
1
OFF
ON
OFF
OFF
19-24
1
2
ON
ON
OFF
OFF
25-30
2
3
OFF
OFF
ON
OFF
31-36
2
4
ON
OFF
ON
OFF
37-42
2
5
OFF
ON
ON
OFF
43-48
2
6
ON
ON
ON
OFF
49-54
3
7
OFF
OFF
OFF
ON
55-60
3
8
ON
OFF
OFF
ON
61-66
3
9
OFF
ON
OFF
ON
67-72
3
10
ON
ON
OFF
ON
73-78
4
11
OFF
OFF
ON
ON
79-84
4
12
ON
OFF
ON
ON
85-90
4
13
ON
ON
ON
ON
91-96
4
14
Class A or Class B Phone Circuits Selection
Switch 5
Operation
OFF
Class B Phone Circuits
ON
Class A Phone Circuits
On Board Power Supply or External Power Source Selection
Switch 6
Operation
OFF
Use on board power supply
ON
Use external power source
P-Link Device or Standalone System
Switch 7
Operation
OFF
FFT-1000 does not use P-Link
connection (Standalone System)
ON
FFT-1000 operates as P-Link
Device
