Cisco BPX 8650, Installation And Configuration Manual

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31-5
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
E1 Clock Cabling
Table 31-12 through Table 31-15 lists E1 clock cabling details.
Table 31-9 T1 Connection to XFER TMG on BCC-bc
Pin # Description
1 Transfer timing ring
2 Transfer timing tip
3 & 4 Transfer timing shield
Table 31-10 T1 Connection to EXT TMG on BCC-bc
Pin # Description
2 Receive pair shield
3 Receive tip
11 Receive ring
Table 31-11 T1 Connection to EXT 1 or EXT 2 on BCC-3-bc
Pin # Description Function
1 Transmit tip Transmit T1 timing signal synchronized to the node
2 Transmit pair shield
3 Receive tip Receive clock for synchronized clock source for node
4 Receive pair shield
7 Transfer timing tip
8 Transfer timing shield
9 Transmit ring
11 Receive ring
15 Transfer timing ring
Table 31-12 E1 Connector Pin Assignments for External Clock
Connector Description
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 31-13
and Table 31-15 for pinouts.
Max. Cable Length: Approximately 100 meters maximum between the BPX switch and the first
repeater or CSU. Equalizer for cable length.