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Table Of Contents
Auxiliary and Control Port Cabling
BPX Switch Cabling Summary
This appendix provides details on the cabling required to install the BPX switch.
Note
In all cable references, the transmit direction is from the BPX switch, receive is to the BPX switch.
Trunk Cabling
Trunk cables connect the customer DSX-3 crossconnect point or T3-E3 Interface Module to the BPX switch at the LM-3T3 back card. Refer to Table B-1 for details.
Table B-1 Trunk Cables
Power Cabling
Power connections are made to the AC Power Supply Shelf or the DC Power Entry Module at the rear of the BPX switch. Refer to Table B-2 and Table B-3 for acceptable cable and wire types.
AC Powered Nodes
AC power cables may be provided by the customer or ordered from Cisco. Several standard cables are available (see Table B-2). AC cables with other plugs or different lengths may be special ordered. For users who wish to construct their own power cable, the cable must mate with an IEC320 16/20A male receptacle on rear of the AC Power Supply Assembly.
Table B-2 AC Power Cables
DC Powered Nodes
DC wiring (see Table B-3) is generally provided by the customer.
Table B-3 DC Power Wiring
LM-BCC Cabling
This cabling connects data ports on the LM-BCC to control terminals and modems. It is also used for external clock inputs from a clock source. See Appendix C, , for more details on peripherals that can be attached to these ports.
Auxiliary and Control Port Cabling
The auxiliary and control ports are used to connect one of the nodes in the network to a control terminal or modem connections for remote alarm reporting or system monitoring. Refer to Table B-4 and Table B-5 for details on this cable.
Table B-4 Auxiliary and Control Port Cabling
Interface:
RS-232 DCE ports.
Suggested Cable:
24 AWG, 25-wire. A straight-through RS-232 cable is used for a terminal or printer connection. A null modem cable may be needed when interfacing with modems on either port.
Cable Connector:
DB-25, subminiature, male. Table B-5 contains a list of the port pin assignments.
Max. Cable Length:
50 feet (15 m.)
Table B-5 Auxiliary and Control Port Pin Assignments
LAN Port Cabling
The LAN connection is used to connect one of the nodes in the network to a Cisco WAN Manager NMS workstation. See Table B-6 and Table B-7 for details.
Table B-6 LAN Port Cabling
Interface:
Ethernet DCE port.
Cable Connector:
DB-15, subminiature, male. Table B-7 contains a list of the port pin assignments.
Max. Cable Length:
50 feet (15 m.) max. to interface adapter.
Table B-7 LAN Port Pin Assignments
Modem Cabling
Refer to Appendix C, , for modem cabling information.
External Clock Input Cabling
This cabling is for making external clock connections for use by the BCC-32, BCC-3, and BCC-4 backcards. The BCC-32 uses the BCC-bc backcard, and the BCC-3 and BCC-4 both use the BCC-3-bc backcard.
Note
T1 Clock Cabling
through lists T1 clock cabling details.
Table B-8 External Clock Cabling
Cable Type:
22 AWG, ABAM individually shielded twisted pair. Two pair per T1 line
(1 transmit and 1 receive).Cable Connector:
Male DB-15 subminiature. See Table B-10 through for pinouts.
Max. Cable Length:
533 ft (162 m.) maximum between the BPX switch and the first repeater or CSU. Selection of cable length equalizers.
Table B-9 T1 Connection to XFER TMG on BCC-bc
Table B-10 T1 Connection to EXT TMG on BCC-bc
Table B-11 T1 Connection to EXT 1 or EXT 2 on BCC-3-bc
E1 Clock Cabling
through lists E1 clock cabling details.
Table B-12 E1 Connector Pin Assignments for External Clock
Cable Type:
75-ohm coax cable for unbalanced connection or 100-120-ohm twisted pair for balanced connection. Two cables/pairs (1 transmit, 1 receive) per E1 line.
Cable Connector:
Two female BNC for unbalanced connection; male DB15 for balanced connection. See Table B-13 and for pinouts.
Max. Cable Length:
Approx. 100 meters maximum between the BPX switch and the first repeater or CSU. Equalizer for cable length.
Table B-13 E1 Connection 75 Ohm to EXT TMG on BCC-bc or BCC-3-bc
Table B-14 E1 Connection 100/120 Ohm to EXT TMG on BCC-bc
Table B-15 E1 Connection 100/120 Ohm to EXT 1 or EXT 2 on BCC-3-bc
External Alarm Cabling
This cable (see Table B-16) is for connecting network alarm outputs to the LM-ASM ALARM OUTPUT connector only. Table B-17 lists the pinouts for the network alarm outputs.
Table B-16 External Alarm Cabling
Interface:
Dry-contact relay closure
Wire:
24 AWG, shielded, 6-pair
Connector:
DB-15, Subminiature, male
Table B-17 Network Alarm Pin Assignments
Standard BPX Switch Cables
Table B-18 lists the various cables that may be ordered directly from Cisco. Cable lengths are specified as a suffix to the Cisco model number. For example 5610-50 indicates a 50 foot cable. Cables are generally available in standard lengths of 10 ft (3 m.), 25 ft (7.6 m.), 50 ft (15 m.), 75 ft (22.8 m.) and 100 ft (30 m.) Lengths of 101 ft. (30 m.) to 600 ft. (183 m.) are available on a special order.
When a cable is connectorized, the connector gender (male-female) will be indicated as well as the number of pins. For example RS-232/M25-M25 indicates a cable terminated with a male DB25 at both ends.
Table B-18 Standard Cables Available from Cisco
Redundancy "Y" Cable
The redundancy cables are a special "Y" cable available from Cisco. They are required for redundant trunk and data interfaces. Table B-19 lists the Y-cables used with various BPX switch back cards.
Table B-19 Redundancy Y-Cables
T3 trunk
LM-3T3
E3 trunk
LM-3E3
Aux./Cont. ports
LM-BCC
Ext. Clk. In
LM-BCC
Ext. Clk. Out
LM-BCC
Posted: Tue May 10 21:29:32 PDT 2005
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