Connecting The Network Cables - Huawei eSpace U1900 Series Quick Installation Manual

4b
Connecting the PGND Cables
！
CAUTION
Ensure that the device is effectively connected to the
nearest ground to avoid noises in voice calls.
4c

Connecting the Network Cables

Use network cables to connect the
following ports to the switch:
• CVP: FE1 and FE2
• SCU: GE0 and GE1
The adaptive network ports support both
straight-through and crossover cables. To
ensure sufficient network bandwidth, use
Cat 5e GE network cables.
• If there are active and standby SCU boards (U1981), connect network cables
to both SCU boards.
• On the BTU board (U1911&U1960&U1981), use a straight-through network
cable to connect the BRI S/T port to the peer NT device.
4d
Connecting the E1/T1 Trunk Cables
Connect and fasten one end of the E1/T1 trunk cable to the E1/T1 port on the
CVP or MTU board, and connect the other end to the E1/T trunk cable of the
peer device directly or through the distribution frame. Connection rules:
• E1 cable: For the same link number X, connect local TX to peer RX and local
RX to peer TX.
• T1 cable: For the same link number X, connect local RX/TX to peer RX/TX.
Connection Mode
E1 (75-ohm, BNC)
E1 (75-ohm, SMB
E1 (75-ohm to 120-
ohm conversion)
T1 (100-ohm)
*The E1 trunk cable delivered with the device has BNC connectors assembled.If
the peer end uses SMB connectors, assemble corresponding SMB connectors
by referring to appendix
Use the PGND cables to connect
the device to the ground bar or
ground point of the grounded
cabinet. A PGND cable must
be as short as possible and
generally cannot exceed 45 cm.
Local End
*
)
a.
Connection Point
TX
RX
TX
RX
RX
TX
RX/TX
6
Peer End
RX
TX
RX
Digital trunk port
TX
RX/TX