| |
|
|
This chapter describes procedures for:
- Installing cables to the TSR system, including information on supplied cables.
- Setting the number and position of the TSR bay.
Customer Supplied Cables
Customer supplied cables are those cables that connect the TSR bay modules to the customer's equipment. All customer supplied cables must be available at the time of installation. For a list of customer supplied cables, refer to Table 5-1.
Avici Supplied Cables
Avici includes a kit of external cables (for use in troubleshooting) with each bay. These cables allow console access into each of the TSR bay components.
Ethernet Cable Specifications
The Ethernet cables required include the 10BaseT for RJ-45 connections to the network management station. This straight through UTP connector is standard Category 5 patch cable. Maximum length is 100 meters.
Fiber Cable Routing
Single or multi-mode optical fiber cables interface between router module and customer equipment.
The fiber optic cables route to internal vertical cable channels and horizontal cable trays on the front surface of the TSR system. The cables route up or down each side of the bay and are distributed between the shelves to router modules.
This method of fiber cabling allows you to remove a module without interfering with the operation of any other module.
Fiber Management Frames
The customer is responsible for purchasing and installing the fiber management frame for their fiber optic cables.
We recommend Siecor Fiber Management System for overhead cable routing of multiple system configurations. Refer to the Site Preparation Guide for detailed information on fiber management.
Installing Module Cables
The following cabling applies to a minimum system configuration consisting of one server module and two router modules.
The cables required for server module connections include:
- Two Category 5 100BaseT Ethernet cables to connect to two router modules
- One Category 5 10BaseT Ethernet cables to connect to one bay controller module
- One Category 5 10BaseT Ethernet cable (customer supplied) to connect to an external network management system
The cables required for router module connections include:
- Up to eight fiber optic cables to connect the router module to customer equipment
TSR Split Bay Configuration
The server modules in the split bay configuration attach to two router modules, called Server-Attached Modules (SAMs), in both the upper and lower routers. The server must be installed in position 11 in the upper router. We recommend designation of the router modules in position number 15 and 16 as the SAMs for the upper router. The server must be installed in position 31 in the lower router. In the lower router, we recommend designation of the router modules in positions 35 and 36 as the server-attached modules. The server-attached module system provides system redundancy.
NOTE Refer to Figure 5-1 for an illustration of the cables and connectors described in these procedures.
Figure 5-1. Server Module Cable Connections
Installing Server Module Cables
Each server module supports five Ethernet ports (ETH 0 - ETH 4) and one console (RS-232) port. The Ethernet ports provide for interconnection to other modules within the bay and to the network management system. The console port provides for interconnection to a console terminal for use when configuring via the command-line interface.
Redundant Bay Controllers
Fault tolerance was increased by adding a second connection from the server to the bay controller network. In previous releases, only ETH 3 was connected to the bay controller network via the BIP. Now, ETH 4 can also be connected to the BIP providing a secondary path to the bay controllers.
NOTE The ETH 3 connection should be to one of the two left hand ports in the BIP while the ETH 4 connection should be to one of the two right hand ports. While the choice of left for ETH 3 and right for ETH 4 is arbitrary, it is necessary to connect one to each side as the left had 2 ports connect to the left bay controller and the right hand 2 ports connect to the right bay controller. This minimizes shared components in each path.
Upper Router
PROCEDURE: Use the following steps to install the Ethernet and console cables for the server module in the upper router.
Step 1 ETH 0 - Attach an RJ-45 Ethernet cable from this connector on the server module to the remote network management system within the central office.
Step 2 CONSOLE - Attach a DB-9 RJ-45 adapter from this connector on the server module to one end of the UTP cable with RJ-45 connectors on each end. Take the RJ-45 connector on the other end of the UTP cable and plug it into the female adapter, which plugs into the console terminal (PC) port.
Step 3 ETH 1 - Attach an RJ-45 Ethernet cable from this connector on the server module to the RJ-45 connector located in the AUX tray of the router module in position 15 (slide out the AUX tray to make this connection). This router module is referred to as the SAM. Refer to Figure 5-2.
Figure 5-2. RJ-45 Ethernet Cable Connection
Step 4 ETH 2 - Attach an RJ-45 Ethernet cable from this connector on the server module to the RJ-45 connector located in the AUX tray of the router module in position 16 (slide out the AUX tray to make this connection). This router module is the SAM. Refer to Figure 5-2.
NOTE Remove the BIP cover to determine which cable is attached to the leftmost bay controller. Refer to Figure 5-3.
Step 5 ETH 3 - Attach the red RJ-45 Ethernet cable from this connector on the server module to the leftmost bay controller port located on the BIP. The red Ethernet cable is already attached to the leftmost bay controller and is already routed down the side cable channels for this connection.
Step 6 ETH 4 - Attach the red RJ-45 Ethernet cable from this connector on the server module to the rightmost bay controller port located on the BIP. The red Ethernet cable is already attached to the leftmost bay controller and is already routed down the side cable channels for this connection.
Figure 5-3. Breaker Interface Panel Ethernet Connections
Lower Router
PROCEDURE: Use the following steps to install the Ethernet and console cables for the server module in the lower router:
Step 1 ETH 0 - Attach an RJ-45 Ethernet cable from this connector on the server module to the remote network management system within the central office.
Step 2 CONSOLE - Attach a DB-9 RJ-45 adapter from this connector on the server module to one end of the UTP cable with RJ-45 connectors on each end. Take the RJ-45 connector on the other end of the UTP cable and plug it into the female adapter, which plugs into the console terminal (PC) port.
Step 3 ETH 1 - Attach an RJ-45 Ethernet cable from this connector on the server module to the RJ-45 connector located in the AUX tray of the router module in position number 35. (Slide out the AUX tray to make this connection.) This router module is the SAM. Refer to Figure 5-2.
Step 4 ETH 2 - Attach an RJ-45 Ethernet cable from this connector on the server module in position 31 directly to the connector located in the AUX tray of the router module in position number 36. (Slide out the AUX tray to make this connection.) This router module is the SAM. Refer to Figure 5-2.
NOTE Remove the BIP cover to determine which cable is attached to the left most bay controller. Figure 5-3.
Step 5 ETH 3 - Attach the red RJ-45 Ethernet cable from this connector on the server module to the leftmost bay controller port located on the BIP. The red Ethernet cable is already attached to the left bay controller and is already routed down the side cable channels.
Step 6 ETH 4 - Attach the red RJ-45 Ethernet cable from this connector on the server module to the rightmost bay controller port located on the BIP. The red Ethernet cable is already attached to the leftmost bay controller and is already routed down the side cable channels for this connection.
Installing Router Module Cables
Router modules connect to customer equipment via fiber optic cables and SC simplex coupler connections on router module cable management trays.
Installing Fiber Optic Cables
Fiber cables route up or down vertical cable channels (at each side of the bay) to horizontal cable channels (between the shelves) to cable management trays on the router modules. Router module cable managment trays contain SC simplex couplers for interconnection of the fiber cables.
WARNING This is a Class 1 laser product. Invisible laser radiation can be emitted from the aperture of the port when the fiber cable is disconnected. Avoid exposure to laser radiation and do not look directly into open apertures.
PROCEDURE: Use the following steps to install fiber cables:
Step 1 Feed each (2 mm) fiber cable up through the bottom or down from the top of the bay and into the vertical cable tray.
Step 2 Feed the cable from the vertical cable channel to the horizontal cable channel nearest the router module you are attaching to.
Step 3 Feed the fiber cable(s) from the horizontal cable channel up to the vertical cable-management tray(s) attached to the router module and install them in the cable-management tray as follows:
Step 4 Carefully slide out the cable management tray marked "1-2." If necessary, repeat this step for the cable management tray marked "3-4." Refer to Figure 5-4.
Step 5 Insert each SC fiber cable connector into the SC simplex coupler in the respective (1, 2, 3, 4) "In" (Rx) or "Out" (Tx) location of each router module fiber cable-management tray. Refer to Figure 5-4.
Figure 5-4. Router Module Fiber Optic Cable Connections
RS-232 Serial Interface Connector
A DB-9 RJ-45 adaptor is required to connect the server console port to a console terminal. The server RS-232 connector is a 9-pin DB-9 female connector supporting a limited data communications equipment (DCE) pinout. Refer to Figure 5-5.
PROCEDURE: Use the following steps to connect the server console port to a console terminal:
Step 1 Attach a DB-9 RJ-45 adapter from this connector on the server module to one end of the UTP cable with RJ-45 connectors on each end.
Step 2 Take the RJ-45 connector on the other end of the UTP cable and plug it into the female adapter.
Step 3 Plug the female adapter into the console terminal (PC) port.
Figure 5-5. Serial Cable
RS-232 supports the following terminal settings:
- Bits: 8
- Parity: N
- Stop bit: 1
- Flow control: None
Installing Bay Controller Backplane Cables
The TSR bay controller backplane is attached to the bay frame at the rear of the bay. The TSR bay controller backplane interfaces between:
- Bay controllers and cooling modules
- Bay controllers and module backplanes (for communication between server and router modules)
- Bay controllers and the BIP (for monitoring power and alarm LEDs)
- Bay controllers in adjacent bays (multiple bay systems only)
Ethernet Cables
The bay controller backplane Ethernet connections connect to the server via the bay controller connections. These connections are on the BIP directly below the breaker switches.
The cables used to connect the bay controller backplane to the Ethernet connections on the BIP are installed during manufacturing. However, if there is ever a need to replace or service these cables, the following table indicates where the cables should interconnect. To access these connections, the BIP cover must be removed.
Refer to Figure 5-6 and Figure 5-7 for more information.
Figure 5-6. Bay Controller Backplane Ethernet Connections
Figure 5-7. Breaker Interface Panel Ethernet Connections
Bay Numbering
The bay controller backplane includes a rotary switch and a toggle switch for setting the number and position of each TSR bay. Refer to Figure 5-8.
Figure 5-8. Bay Identifier Switches
The toggle switch specifies whether this bay is in the front or back row (F or B) of a multibay lineup. The rotary switch specifies the number of the bay (1 - N) in a multibay lineup. Refer to Figure 5-9.
Figure 5-9. Bay Numbering
PROCEDURE: Use the following steps to set the bay identifier switches for an F1 bay location:
Step 1 Set toggle switch to "F"
Step 2 Set Bay Number SW1 rotary switch to "1"
Grounding Communication Links
The TSR system uses three main types of communications cables:
- Fiber-optic cables
- Twisted-pair Ethernet cables
- Coaxial cables
CAUTION In a system with an Isolated Bonding Network (IBN) grounding topology, take care that communications cables going into and out of the system do not violate the topology. Links must be isolated to avoid signals being referenced to different ground potentials which can cause signal errors or damage to circuitry. Safety hazards can arise when metallic connections allow contact between different ground potentials.
Potential differences can occur when signals and/or shields are connected to different ground references. This requires specific installation measures to offset possible risks or violations.
NOTE The installation measures that must be taken to eliminate different ground references are beyond the control of the supplier of the equipment or the installer. These measures are in reference to the grounding topology of the customer's central office. Customers have different methods of supplying and connecting these site specific grounds. This statement is intended only as a reminder to customers that there are possible risks involved when connecting to different ground sources.
For additional information on grounding network-communication links, refer to the International Telecommunications Union standards ITU-TS.
Central Office Alarms
This section provides a description of "Central Office Alarms" for the TSR. These alarms set off audible and visual indicators in the Central Office (CO), as well as bay LEDs, see Figure 5-10.
Central office alarms, when connected at the CO, report the occurrence of events such as a component failure. Alarms originate in either a bay controller or server.
The alarm task resides in the bay controller and is responsible for setting and clearing of alarms as well as maintaining an alarm database. A DB-15 connector on the TSR bay provides you with the ability to connect the visual and audible alarms to your central office system.
CO Alarm Levels
There are three levels of central office alarms:
- Critical
- A critical alarm indicates the occurrence of a severe, service-affecting condition and requires immediate corrective action. Two Bellcore examples of a Critical alarm would be either a fire or an access transport entity (DLC), which must generate a critical alarm if 128 access lines are out of service.
- Major
- Major alarms indicate serious hardware or software conditions such as disruption of service or failure of an important circuit. A major alarm requires immediate attention to restore full system performance, but has less immediate impact on service or system operation than a critical alarm. Bellcore's example for a Major alarm, is a Public Packet Switch Network (PPSN) trunk "declared link failure."
- Minor
- A minor alarm indicates the problem does not have a serious affect on service to customers or indicates trouble with a circuit that is not essential to system operation. Bellcore's example of a Minor alarm would be all non-service affecting issues, such as, a line carrier problem where transmission was switched to a protection line.
Bellcore GR-474-CORE states that each trouble requiring a craftsperson action shall result in an alarm condition and shall be reported by three concurrent methods:
CO Alarm LEDs and Audible Bells
The CO alarms are both visual and audible. Three labeled LEDs located on the TSR bay visually display alarms signals. See "Figure 5-10."
Figure 5-10. Central Office Alarm LEDs
On the TSR, the critical and major LEDs are red; the minor LED is amber. LEDs remain lit until all detected events have been cleared.
Whether the alarm signal originates from the server or bay controller, the appropriate LED, or visual and sound combination in the central office will activate. Logging of messages occurs when an alarm is activated.
IPriori provides CLI commands to silence alarms that are sounding, to display alarms, and to test the two TSR bay LEDs. For more information about IPriori and CLI commands for the CO alarms, see "IPriori CLI Reference (Vol.1)."
Installing Central Office Alarm Cables
Central office alarm cables route to the TSR bay using customer supplied alarm cables. The alarm cables connect to the TSR bay via a D-type, 15-pin connector. The DB-15 connector is located below the BIP on the front of the TSR bay. Refer to Figure 5-11 "CO Alarm Connector."
Figure 5-11. CO Alarm Connector
PROCEDURE: Use the following steps to connect the central office alarm to the TSR:
Step 1 Remove the BIP cover by pulling carefully on the top edge of the cover.
Step 2 Attach the DB-15 CO alarm cable to the alarm out CO alarm connector below the BIP on the lower right-side. Refer to Figure 5-11 "CO Alarm Connector."
Step 3 In the event you need to isolate the customer alarm system from the TSR during service or repairs, bypass the alarm by inserting a switch between the alarm cable and the alarm system. Be sure to reset the switch to the ON position after completion of the service or repair.
For long cables, ensure that your alarm system is not impeded by cable resistance.
Configuring Central Office Alarm Cable Connections
The TSR has three sets of relays to generate central office alarms. When connected at the CO, the relays provide audible (bells, chimes, gongs) and visual (red, amber) indicators in the CO. Refer to Figure 5-12 for the pinout.
Figure 5-12. DB-15 Pinout
Critical Alarm Connections
PROCEDURE: Use the following steps to make Critical alarm connections:
Step 1 Pin 2 and pin 9 to critical alarm relay at location 1.
Step 2 Pin 6 and pin 13 to critical alarm relay at location 2.
Major Alarm Connections
PROCEDURE: Use the following steps to make Major alarm connections:
Step 1 Pin 3 and pin 10 to major alarm relay at location 1.
Step 2 Pin 7 and pin 14 to major alarm relay at location 2.
Minor Alarm Connections
PROCEDURE: Use the following steps to make minor alarm connections:
Step 1 Pin 4 and pin 11 to minor alarm relay at location 1.
Pin 8 and pin 15 to minor alarm relay at location 2.
Installing the Shelf Cover
After all modules have been installed and cabled, the shelf covers must be reinstalled.
Each TSR bay has four shelves numbered from 1 (top) to 4 (bottom). Each shelf cover kit contains 4 shelf covers. The shelf cover design is easily installed and removed for access to router and server modules.
Each shelf cover is a stand-alone unit. No hardware is necessary to attach the shelf cover to the bay. Small notches in the top and bottom of the shelf cover grasp and attach to screws in each side of bay frame. Refer to Figure 5-13.
Figure 5-13. EMI Shelf Cover
PROCEDURE: Beginning at the top shelf of the bay, use the following procedure to install the shelf cover on shelves 1-4:
Step 1 Open the door panels on each side of the bay.
Step 2 Holding the shelf cover at a 45° angle, position the top notches of the shelf cover onto the screws on each side of the bay frame. Refer to Figure 5-14.
Figure 5-14. Shelf Installation - 1
Step 3 Lower the bottom of the shelf cover and push the cover onto the bay. Refer to Figure 5-15.
Figure 5-15. Shelf Installation - 2
Step 4 Push the shelf cover down to fully engage the notches on the bottom screws. Refer to Figure 5-16.
Figure 5-16. Shelf Installation - 3
Step 5 Repeat Step 2 through Step 4 for the remaining 3 shelf covers. Refer to Figure 5-17.
Figure 5-17. Completed Shelf Installation
| |
|
|
Copyright © 2001
Avici Systems Inc.
Avici® and TSR® are registered
trademarks of Avici Systems Inc.
IPriori™ is a trademark of Avici Systems Inc.
Source File Name: c6-instcbls.fm
HTML File Name: c6-instcbls.html
Last Updated: 06/11/01 at 10:48:32
Please email suggestions and comments to: doc@avici.com