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This chapter describes how to install a NEBS Level 3/ETSI kit on your Cisco 3660 router.
This chapter contains the following sections:
Follow this procedure to attach the grounding lug to your router chassis:
Step 1 Turn OFF power to the router. However, to channel ESD voltages to ground, do not unplug the power cable. Remove all network interface cables, including telephone cables, from the rear panel.
The following warning applies to routers that use a DC power supply:
 | Warning Before performing any of the following procedures, ensure that power is removed from the DC circuit. To ensure that all power is OFF, locate the circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to the OFF position, and tape the switch handle of the circuit breaker in the OFF position. |
Step 2 Strip one end of the 6-AWG wire to expose approximately 0.75 inch (20 mm).
Step 3 Crimp the grounding lug around the wire. (See Figure 5-1.)
Step 4 Use the number 2 Phillips screwdriver to fasten the grounding lug to the Cisco 3660 router chassis. (See Figure 5-2.)
Step 5 Connect the other end of the grounding lug wire to a grounding point at your site.
 | Caution NEBS/ETSI Intrabuilding Lightning Requirement This equipment is suitable for connection to intrabuilding or nonexposed wiring or cabling only. This cabling must be shielded. |
Step 6 Turn ON power to the router.
The following warning applies to routers that use a DC power supply:
| Warning After wiring the DC power supply, remove the tape from the circuit breaker switch handle and reinstate power by moving the handle of the circuit breaker to the ON position. |
The alarm port on the Cisco 3660 rear panel (see Figure 5-3) provides relay outputs to connect the router to central office alarms.
The terminals are described in Table 5-1. In order to operate the alarm port, wire the P terminal and one of the other terminals (NO and NC).
| Terminal | Meaning |
|---|---|
P | Primary---This pin is connected to the common contact of the alarm relay. |
NO | Normally open---This pin is connected to the "normally open" contact of the alarm relay, and is disconnected from the primary pin during normal system operation. During an alarm condition it is connected to the primary pin by the alarm relay. |
NC | Normally closed---This pin is connected to the "normally closed" contact of the alarm relay, and is connected to the primary pin during normal system operation. During an alarm condition it is disconnected from the primary pin by the alarm relay. |
Follow this procedure to install the alarm terminal block (see Figure 5-4) in the Cisco 3660 router alarm port:
Step 1 Turn OFF power to the router. However, to channel ESD voltages to ground, do not unplug the power cable.
Step 2 Use 12- or 14-AWG copper wires to connect DC-input power to the terminal blocks.
Step 3 Strip the wire shielding so that approximately 0.38 inch (9.7 mm) of each wire is exposed.
Step 4 Press the orange-colored release and insert a wire into a receptacle of the alarm terminal block. Two of the three receptacles must have wires installed (see Table 5-1). The spring-loaded connector retains the wires.
Step 5 Plug the alarm terminal block into the alarm port on the Cisco 3660 chassis. (See Figure 5-5.)
Step 6 Reinstall network cables, and turn ON power to the router.
Posted: Thu Jul 29 09:29:36 PDT 1999
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