Nortel TDM Recorder, Installation Manual

Page: 25 / 128

September 2007 Recorder Hardware Installation
Installation Guide 25
T1/E1 trunks travelling over co-axial cables
Passively tapping T1 or E1 trunks that travel over coax cables requires the
use of a converter to make the switch from coax to RJ-45. The Dual Balun
converter and co-axial Tee converters are typically used to convert the
signal, and are shown in the following diagram:
PBX
DP3209 or
DP6409 Voice
Card
E1 Trunk Wiring Scenario
PSTN
1 2 3 4 5 6 7 8
RJ-45
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
RJ -45
Trunk 1
RJ - 45
Trunk 2
Framer 2
Inbound
Ch 31 - 60
Framer 0
Inbound
Ch 1 - 30
Framer 1
Outbound
Ch. 1 - 30
Framer 3
Outbound
Ch. 31 - 60
Feed from 2nd
Dual BALUN
Converter for
Trunk 2 (not
shown)
Categor y 5 Twisted Pair Tap
Outbound
Inbound
COAX Cable
TGEE Connectors
1st Dual BALUN Conver ter
(for trunk 1 )
1
2
1
4
5
4
1
2
4
5
Tee connectors