User's Manual Part 2

Ethernet LAN

MAY 2004

1X SC480 BTS Hardware Installation, Optimization/ATP, and FRU

PRELIMINARY

6-3

Ethernet LAN Termination

For proper operation, the BTS Ethernet Local Area Network (LAN)

connections must be terminated with a 50–ohm loads. This is done by

placing four (4) 50–ohm BNC terminations on the LAN A and B

external IN and OUT connectors located on the rear of the BTS. This is

only done on stand–alone BTSs. The front panel LAN connections are

not terminated with loads.

Verify that the LAN A and B external IN and OUT connectors at the rear

of the BTS have terminations installed. See Figure 6-1 for locations.

Figure 6-1: LAN Connectors

19MHz EVEN

RESET ALARM MMI

PWR/ALM

RESET

GLI

ACTIVE

BPR A BPR B AUX

MMI

LAN A & B

Connections

P/O Rear Panel

Rear Panel LAN Connectors

LAN A LAN B

Front Panel