Timing Connections - Cisco ONS 15454 DWDM Reference Manual

1.15.2 Timing Connections

two wire-wrap pins on the shelf assembly backplane. Visual and audible alarm contacts are classified as
Critical, Major, Minor, and Remote.
pin assignments.
Visual and audible alarms are typically wired to trigger an alarm light or bell at a central alarm collection
point when the corresponding contacts are closed. You can use the ACO pins to activate a remote ACO
for audible alarms. You can also activate the ACO function by pressing the ACO button on the
TCC2/TCC2P card faceplate. The ACO function clears all audible alarm indications. After clearing the
audible alarm indication, the alarm is still present and viewable in the Alarms tab in CTC.
1.15.2 Timing Connections
The ONS 15454 ANSI backplane supports two building integrated timing supply (BITS) clock pin
fields. The first four BITS pins, rows 3 and 4, support output and input from the first external timing
device. The last four BITS pins, rows 1 and 2, perform the identical functions for the second external
timing device.
For timing connection, use 100-ohm shielded BITS clock cable pair #22 or #24 AWG (0.51 mm²
Note
[0.020 inch] or 0.64 mm² [0.0252 inch]), twisted-pair T1-type.
Table 1-13
External Device
First external device
Second external device
Refer to Telcordia SR-NWT-002224 for rules about provisioning timing references.
Note
1.15.3 LAN Connections
Use the LAN pins on the ONS 15454 ANSI backplane to connect the ONS 15454 ANSI to a workstation
or Ethernet LAN, or to a LAN modem for remote access to the node. You can also use the LAN port on
the TCC2/TCC2P faceplate to connect a workstation or to connect the ONS 15454 ANSI to the network.
Table 1-14
Before you can connect an ONS 15454 ANSI to other ONS 15454 ANSI shelves or to a LAN, you must
change the default IP address that is shipped with each ONS 15454 ANSI (192.1.0.2).
Cisco ONS 15454 DWDM Reference Manual, R8.5
1-58
Figure 1-53 on page 1-56
Table 1-13 lists the pin assignments for the BITS timing pin fields.
BITS External Timing Pin Assignments
Contact
A3 (BITS 1 Out)
B3 (BITS 1 Out)
A4 (BITS 1 In)
B4 (BITS 1 In)
A1 (BITS 2 Out)
B1 (BITS 2 Out)
A2 (BITS 2 In)
B2 (BITS 2 In)
shows the LAN pin assignments.
Chapter 1
and Figure 1-54 on page 1-57
Tip and Ring Function
Primary ring (–) Output to external device
Primary tip (+) Output to external device
Secondary ring (–) Input from external device
Secondary tip (+) Input from external device
Primary ring (–) Output to external device
Primary tip (+) Output to external device
Secondary ring (–) Input from external device
Secondary tip (+) Input from external device
Shelf Assembly Hardware
show alarm
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