|
|
This chapter describes the Communication Interface module (CIM).
The CIM is installed in the ONS 15252 MCU. The CIM extends the ONS 15252 MCU internal CAN bus to another ONS 15252 MCU or an ONS 15201 SCU. The extension of the CAN bus allows the configuration of several network elements into a larger functional unit.
Additionally, the CIM provides:
The Network Control Board (NCB) transfers information to the CIM on the ONS 15252 MCU backplane.
This section provides a description of the CIM, illustrated in Figure 3-1.
The CIM can extend the controller area network (CAN) bus of the ONS 15252 MCU to another MCU or to an ONS 15201 SCU. This arrangement allows several network elements (NEs) to work together as a larger functional unit.
The CIM is also the interface to the Maintenance Manager (MM) software package. This interface makes any PC equipped with required hardware a platform for ONS 15200 system surveillance, troubleshooting, and maintenance. An EIA/TIA-232 (NONE standard) port (Tx, Rx, Ground) is available on the CIM, which is accessible with an additional CIM adapter cable.
 |
Note The CIM is active, but does not include alarm or supervisory subunit functions. |
Figure 3-2 shows the position of the LEDs, the push button, and the connectors, which are described in
Table 3-1 and Table 3-2.
Three LEDs show NCB module status on the front of the CIM (Table 3-2).
This section covers electrical, environmental, and mechanical specifications for the CIM. Because the CIM is not an optical device, optical specifications and default thresholds do not apply.
The power supply for the CIM is 4.5 VDC.
Table 3-3 lists CIM environmental specifications climate-related limits during normal operation.
Table 3-3 CIM Environmental Specifications
| Item | Specification |
|---|---|
Short term operating temperature |
|
Short term operating relative humidity (per Telcordia GR-63-Core, NEBS level 3) |
Table 3-4 lists CIM mechanical specifications.
This section explains the removal and replacement procedures for the CIM. Make sure the replacement module and any supplies, such as tagging materials, are present on site before you begin the removal and replacement procedures.
|
Note Under normal circumstances, removing the CIM is not traffic affecting. The removal of the CIM will reset the management data bus because the internal CAN bus termination is reset. During this process, there is no management access to the system. |
 |
Warning The ONS 15252 MCU is energized with -48 VDC power. |
 |
Caution Static electricity can damage electro-optical modules. While handling electro-optical modules, wear a grounding wrist strap to discharge the static buildup. Wrist straps are designed to prevent static electricity damage to equipment. |
The CIM is installed in the ONS 15252 MCU. Only replace the CIM if it is malfunctioning. In that case, replace the CIM immediately.
To replace the CIM module, complete the followings procedure:
1. Remove the Communication Interface Module from the ONS 15252 MCU
2. Replace the Communication Interface Module in the ONS 15252 MCU
This section describes how to remove the CIM from the ONS 15252 MCU.
|
Warning Follow proper safety procedures when removing modules without switching off the relevant subrack. |
Step 2 Remove the module from s lot 17 directly below the NCB module. (See Figure 3-3.)
Follow the steps to replace a CIM module from the ONS 15252 MCU
|
Caution Make sure the CIM is properly inserted into the ONS 15252 MCU guide rails. |
Step 2 Fit the module properly in the short guiding rail on the bottom.
Step 3 When the module is seated, use a slot or Phillips screwdriver to tighten the retaining screw.
Posted: Thu Apr 17 15:16:23 PDT 2003
All contents are Copyright © 1992--2002 Cisco Systems, Inc. All rights reserved.
Important Notices and Privacy Statement.
