Cisco Systems 8600 Series manual E1 Clock Cabling

LM-BCC Cabling

E1 Clock Cabling

Table B-12through Table B-15lists E1 clock cabling details.

Table B-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 B-13and Table B-15for 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
Connector	Description
BNC	Receive E1 from trunk

Table B-14 E1 Connection 100/120 Ohm to EXT TMG on BCC-bc

Pin # Description

2Receive pair shield

3Receive tip

11	Receive Ring
Table B-15	E1 Connection 100/120 Ohm 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

BPX Switch Cabling Summary B-5