1-58
Cisco ONS 15454 DWDM Reference Manual, R8.5
78-18343-02
Chapter 1 Shelf Assembly Hardware
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. Figure 1-53 on page 1-56 and Figure 1-54 on page 1-57 show alarm
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. Table 1-13 lists the pin assignments for the BITS timing pin fields.
Note For timing connection, use 100-ohm shielded BITS clock cable pair #22 or #24 AWG (0.51 mm²
[0.020 inch] or 0.64 mm² [0.0252 inch]), twisted-pair T1-type.
Note Refer to Telcordia SR-NWT-002224 for rules about provisioning timing references.
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 shows the LAN pin assignments.
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).
Table 1-13 BITS External Timing Pin Assignments
External Device Contact Tip and Ring Function
First external device A3 (BITS 1 Out) Primary ring (–) Output to external device
B3 (BITS 1 Out) Primary tip (+) Output to external device
A4 (BITS 1 In) Secondary ring (–) Input from external device
B4 (BITS 1 In) Secondary tip (+) Input from external device
Second external device A1 (BITS 2 Out) Primary ring (–) Output to external device
B1 (BITS 2 Out) Primary tip (+) Output to external device
A2 (BITS 2 In) Secondary ring (–) Input from external device
B2 (BITS 2 In) Secondary tip (+) Input from external device
To Next Page
Loading...
Need help?
General
