Cisco BPX 8650, Installation And Configuration Manual

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31-4
Cisco BPX 8600 Series Installation and Configuration
Release 9.3.30, Part Number 78-12907-01 Rev. E0, May 2005
Chapter 31 BPX Switch Cabling Summary
LM-BCC Cabling
Modem Cabling
For modem cabling information, see Chapter 15, “Connecting Temporary Terminal and
Attaching Peripherals.”
External Clock Input Cabling
This cabling is for making external clock connections for use by the BCC-32 and BCC-4 back cards.
The BCC-32 uses the BCC-bc back card.
The discontinued BCC-3 and BCC-4 both use the BCC-3-bc back card.
Note
The clock output from the BPX 8600 external clock connector is not a T1 or E1 pulse stream. It is
a TIA 422A square wave at T1or E1 rates (i.e. a square wave at either 1.544 Mbps or 2.048 Mbps.)
T1 Clock Cabling
Table 31-8 through Table 31-11 lists T1 clock cabling details.
Table 31-7 LAN Port Pin Assignments
Pin # Name Pin # Name
1 Shield — —
2 Collision Pr 9 Collision Presence -
3 XMT + 10 XMT -
4 Reserved 11 Reserved
5 RCV + 12 RCV -
6 Power return 13 Power (+12V)
7 Reserved 14 Reserved
8 Reserved 15 Reserved
Table 31-8 External Clock Cabling
Cable Parameter Description
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 31-10 through Table 31-11 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.