NPT-1020 Installation and Maintenance Manual
Before You Start
ECI Telecom Ltd. Proprietary
3-10
3.5.6
TOD/1PPS Cable
The NPT-1020 platform uses an RJ-45 connector on its front panel, marked TOD/1PPS, which provides
timing and synchronization input/output signals, supporting IEEE 1588v2 standard.
If it has balanced (120
Ω)
G.703 interfaces, a multi twisted-pair cable with an RJ-45 connector (supplied by
ECI) is used to connect timing signals from the NPT-1020 to the site timing reference distribution
subsystems.
If the site timing reference distribution subsystem has unbalanced (75
Ω
) G.703 interfaces, configure an
adapter with coaxial cables that provides balanced-to-unbalanced conversion (supplied by ECI).
3.5.7
Electric Traffic Cables
Some electric traffic cables can be prepared on site. The following table lists the type of cables and mating
connectors needed for each NPT-1020 traffic interface type.
Table
3-5: Traffic cables mating connector data for NPT-1020
Module or card
Interface type
Cable type
Mating connector
Connector at other
end
Qty./Module
NPT-1020
E1 balanced (2.048
Mbps)
Multipair cable (2 x
21 120
Ω
twisted
pairs)
2 x 50-pin SCSI male
Open
1
NPT-1020
10/100/1000BaseT
Cat5e
RJ-45
RJ-45
8
MSE1_16
E1 balanced (2.048
Mbps
Multipair cable (2 x
21 120 W twisted
pairs)
100-pin SCSI male
Open
1
PME1_21
E1 balanced (2.048
Mbps)
Multipair cable (2 x
21 120
Ω
twisted
pairs)
100-pin SCSI male
Open
1
PME1_21
E1 balanced (2.048
Mbps)
Twin multipair cable
(2 x 21 120
Ω
twisted
pairs)
100-pin SCSI male
2 x 50-pin SCSI male
1
PME1_63
E1 balanced (2.048
Mbps
3 x twin multipair
cable (2 x 21 120
Ω
twisted pairs)
2 x 136-pin VHDCI
Open (connects to
DDF)
1
xDDF-21
E1 unbalanced (2.048
Mbps)
Coaxial cable
DIN 1.0/2.3
Open (prepared in
the field)
42
PM345_3
E3/DS-3 (34/45 Mbps) Coaxial cable
DIN 1.0/2.3
Open (prepared in
the field)
6
SMD1B
STM-1 electrical
Coaxial cable
DIN 1.0/2.3 (on electrical
SFP)
Open (prepared in
the field)
2/4
DHGE_8
10/100/1000BaseT
Cat5e
RJ-45
RJ-45
4
DHGE_4E
10/100/1000BaseT
Cat5e
RJ-45
RJ-45
4
1
Cable is used to connect the PME1_21 E1 interface connector to the xDDF-21.
2
Electrical or optical SFPs can be used when working in STM-1; the cable type is determined according to the SFP used.