Platform Descriptions
3-12 Issue 8.0 July 2002
â– TIMING IN PRI and TIMING IN SECY: These connectors provide a
primary (PRI) and secondary (SEC) interface to an external DS1 timing
source that is required for synchronous operation. For more information
about synchronization interfaces, refer to Volume I, Section 5, "Control,
Transmission, and Synchronization Interfaces."
â– TIMINGOUT1andTIMINGOUT2: These connectors provide an
interface to other central office equipment that requires a DS1 timing
reference signal. For more information about synchronization interfaces,
refer to Section 5, "Control, Transmission, and Synchronization Interfaces."
â– CIT (DCE): This connector provides an interface to the CIT (DCE) port on
the user panel (USER PNL) that allows local access. For more information
about the CIT (DCE) interface, refer to Section 6, "Operations Interfaces."
â– USER PNL DISPLAY: This connector provides an interface to the alarm
and status indicators, and display on the user panel. For information about
the user panel display and indicators, refer to Section 6, "Operations
Interfaces."
■PWR: These connectors provide an interface to the −48 V power filters on
the user panel. For more information about power, refer to Section 4,
"Power."
Figure 3-5. Interconnection Panel (Low-Speed Shelf —
System Controller)
CIT (DCE)
PWR
-48A RTN
8B/16B
-48A
-48B -48B RTN
DISPLAY
3
3
2
1
2
1
3
3
2
1
2
1
J142AJ137A
8A/16A7B/15B
J140AJ135A
P163A P158A
CIT (DTE)
3
3
2
1
2
1
P166AP165A
PAR TLM
3
3
2
1
2
1
3
3
2
1
2
1
3
3
2
1
2
1
3
3
2
1
2
1
J39A J44A J101A J106A J117A
6A/14A
J104AJ99AJ42AJ37A
J85A J93AJ95AJ92A
J155A
3
3
2
1
2
1
3
3
2
1
2
1
3
3
2
1
2
1
J132AJ127AJ122A
7A/15A6B/14B
J130A
J120A
J115A
P161A P164AP160AJ156A
3
3
2
1
2
1
J5A
J3A
3
3
2
1
2
1
3
3
2
1
2
1
3
3
2
1
2
1
3
3
2
1
2
1
3
3
2
1
2
1
J10A J15A J20A J25A
J8A J13A J18A J23A
J34A
J32A
P159A
1B/9B 2B/10B 3A/11A 3B/11B 4A/12A 4B/12B 5A/13A 5B/13B
J125A
1A/9A
OFFICE ALMS TIMING IN PRI TIMING IN SECY TIMING OUT 1 TIMING OUT 2
X.25
LS INTFC
2A/10A
SER TLM 1 SER TLM 2 MISC DSCRT 1 MISC DSCRT 2
USER PNL
OUT
IN
IN
OUT
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