Cisco ONS 15454 Procedure Manual page 37

Chapter 1 Install the Shelf and Backplane Cable
Note
Return to your originating procedure (NTP).
Step 2
DLP-A20 Install Timing Wires on the Backplane
Purpose
Tools/Equipment
Prerequisite Procedures
Required/As Needed
Onsite/Remote
Security Level
Using 100-ohm shielded BITS clock cable pair #22 or #24 AWG (0.51 mm² or 0.64 mm²), twisted-pair
Step 1
T1-type, wrap the clock wires on the appropriate wire-wrap pins according to local site practice.
The BITS pin field (FG1) has a frame ground pin beneath it. Wrap the ground shield of the BITS cable
to the frame ground pin.
Table 1-2
External Device
First external device
Second external device A1 (BITS 2 Out)
Note
Step 2 Return to your originating procedure (NTP).
March 2003
The X.25, Modem, and TBOS pin fields are not active.
This task installs the timing wires on the backplane.
Wire wrapper
100-ohm shielded BITS clock cable pair #22 or #24 AWG (0.51 mm² or
0.64 mm²), twisted-pair T1-type
NTP-A4 Remove the Backplane Covers, page 1-15
Required if the node is using external BITS timing
Onsite
None
Table 1-2
External Timing Pin Assignments for BITS
Contact
A3 (BITS 1 Out)
B3 (BITS 1 Out)
A4 (BITS 1 In)
B4 (BITS 1 In)
B1 (BITS 2 Out)
A2 (BITS 2 In)
B2 (BITS 2 In
For more detailed information about timing, refer to the Cisco ONS 15454 Reference Manual.
To set up system timing, see the
NTP-A8 Install Wires to Alarm, Timing, LAN, and Craft Pin Connections
lists the pin assignments for the BITS timing pin fields.
Tip & Ring
Primary ring (-)
Primary tip (+)
Secondary ring (-)
Secondary tip (+)
Primary ring (-)
Primary tip (+)
Secondary ring (-)
Secondary tip (+)
"NTP-A28 Set Up Timing" procedure on page
Cisco ONS 15454 Procedure Guide, R4.0
Function
Output to external device
Output to external device
Input from external device
Input from external device
Output to external device
Output to external device
Input from external device
Input from external device
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