Specifications

Chapter 7 Battery Reversal FXS/DPO
7-7
ON OFF
Test 24
Test 23
Test 22
Test 21
Channel 24
Channel 23
Channel 22
Channel 21
Test 21
Test 20
Test 19
Test 18
Channel 20
Channel 19
Channel 18
Channel 17
Test 16
Test 15
Test 14
Test 13
Channel 16
Channel 15
Channel 14
Channel 13
TP Busy/Idle
Option C
Option B
Option A
Test 9
Test 11
Test 10
Test 12
Channel 12
Channel 11
Channel 10
Channel 9
Test 8
Test 7
Test 6
Test 5
Channel 8
Channel 7
Channel 6
Channel 5
Test 4
Test 3
Test 2
Test 1
TP Busy/Idle
Option A
Option B
Option C
Channel 1
Channel 2
Channel 3
Channel 4
Channel Test
Switches and
Indicators
(CH13 - CH24)
TP Busy/Idle Switch
(CH13 - CH24)
Channel Test
Switches and
Indicators
(CH1 - CH12)
TP Busy/Idle Switch
(CH1 - CH12)
BRFXS/DPO BACK PLATE SWITCHES
SWITCH: FUNCTION:
Channel test Applies reverse battery
(12 per card) to CPE loop and forces
A/B bits sent toward
network to 1/1.
TP Busy/Idle Selects reverse (busy) or
(1 per card) forward (idle) battery
on tip-ground relays
during trunk processing.
BRFXS/DPO BACK PLATE LEDs
LED STATE: CONDITION:
OFF Idle state
(forward battery)
GREEN Incoming call
(reverse battery)
YELLOW Call-in-progress
(reverse battery)
RED Outgoing line seizure
(forward battery)
ALL LEDs YELLOW ABII in Trunk Processing
ALL LEDs flash RED Unsupported signaling
option selected
Figure 8-5. BRFXS/DPO Back Plate Controls and LEDs