Section 363-718-100
Revision 01
Page 5
TABLE 4. COT SHELF CONNECTORS (CONTINUED)
Connector
Type
Function
B_BYPASS_T
B_BYPASS_R
0.45 mm
Wire Wrap
Termination for the metallic bypass pair into COT System #2 from RT #2.
CC1_IN_T
CC1_IN_R
0.45 mm
Wire Wrap
Composite Clock #1. Used for 64 kbps DDS Composite Clock for
synchronization to central office switch.
CC2_IN_T
CC2_IN_R
0.45 mm
Wire Wrap
Composite Clock #2. Used for 64 kbps DDS Composite Clock for
synchronization to central office switch.
FRAME_GND
0.45 mm
Wire Wrap
Frame ground. This is isolated from central office battery ground in PG-Flex.
EXT_ACO
CKT_GND
0.45 mm
Wire Wrap
External Alarm Cutoff. A momentary connection between EXT_ACO and circuit
ground will reset PG-Flex audible alarm relays.
GND
0.45 mm
Wire Wrap
Central office battery ground. This is isolated from frame ground in PG-Flex.
A_TEST_IN_T
A_TEST_IN_R
0.45 mm
Wire Wrap
Test connection looking into the COT channel unit for the selected subscriber
for System #1. This connection must be set up through the PG-Flex RS-232
maintenance port.
A_TEST_OUT_T
A_TEST_OUT_R
0.45 mm
Wire Wrap
Test connection looking into the central office equipment of the selected
subscriber for System #1. This connection must be set up through the PG-Flex
RS-232 maintenance port. In some applications, this pair will be jumpered to the
BYPASS pair from RT #1.
B_TEST_IN_T
B_TEST_IN_R
0.45 mm
Wire Wrap
Test connection looking into the COT channel unit for the selected subscriber
for System #2. This connection must be set up through the PG-Flex RS-232
maintenance port.
B_TEST_OUT_T
B_TEST_OUT_R
0.45 mm
Wire Wrap
Test connection looking into the central office equipment for the selected
subscriber for System #2. This connection must be set up through the PG-Flex
RS-232 maintenance port. In some applications, this pair will be jumpered to the
BYPASS pair from RT #2.
TABLE 5. COT SHELF CONNECTORS (ALARM)
Contact Post
Posts
NO
COM
NC
Function
SYS_ID
1
2
3
System ID. A single form “C” relay is utilized to indicate a major or minor shelf
alarm is active.
MAJ_AUD
4
5
6
A single form “C” relay is utilized to indicate a carrier loss alarm. The alarm
cannot be disabled.
MAJ_VIS
7
8
9
A single form “C” relay is utilized to indicate a carrier loss alarm. The alarm
cannot be disabled.
MIN_AUD
10
11
12
A single form “C” relay is utilized to indicate loss of carrier. The loss of carrier
alarm is present whenever the HDSL line is out of service. After being out of
service for 60 seconds, a Major Alarm is generated in addition to the Minor
Alarm, which remains enabled.
MIN_VIS
13
14
15
A single form “C” relay is utilized to indicate loss of carrier. The loss of carrier
alarm is present whenever the HDSL line is out of service. After being out of
service for 60 seconds, a Major Alarm is generated in addition to the Minor
Alarm, which remains enabled.
