4-7
NEBS Level 3 and ETSI Compliance Kit Installation Guide for Cisco 3620, Cisco 3640, and Cisco 3660 Routers
78-5450-06 B0
Chapter 4 Installation on Cisco 3660 Routers
Installing the Alarm Terminal Block
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. To see translations
of the warnings that appear in this publication, refer to the
Regulatory Compliance and Safety
Information
document that accompanied this device.
Installing the Alarm Terminal Block
The alarm port on the Cisco 3660 rear panel (see
Figure 4-9
) provides relay outputs to connect the router
to a remote alarm.
Figure 4-9
Alarm Port on the Cisco 3660 Router
The terminals are described in
Table 4-1
. In order to operate the alarm port, wire the P terminal and one
of the other terminals (NO and NC).
22660
VCC OK
SYSTEM
FDX
LINK
100Mbps
NO P NC
FDX
1
0
LINK
100Mbps
ETH 0
ETH 3
ETHERNET
4E
ETH 2
ETH 1
1
2
3
ACT
LINK
0
CN/LP RXC
SERIAL 3
SERIAL 2
SERIAL 1
SERIAL 0
RXD
TXC
TXD
CN/LP RXC
RXD
TXC
TXD
CN/LP RXC
RXD
TXC
TXD
CN/LP RXC
RXD
TXC
TXD
EN
SERIAL
4T
VOICE
2V
V0
V1
EN
HIGH SPEED SERIAL
1HSSI
H
TD
TC
RD
RC
LB/CN
Slot 5
Slot 3
Slot 1
Slot 2
Slot 6
Slot 4
Alarm port
SEE MANUAL BEFORE INSTALLATION
VIC
FXS
IN USE
IN USE
1
0
Slot 0
Table 4-1
Alarm Terminal Block Connections
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.
