Lif Modules - Ericsson HL950 CES Quick Installation Manual

LIF MODULES

LIF MODULES LIF MODULES
LIF MODULES LIF MODULES
The LIF (Legacy Interface) modules is located at the bottom right of
the MSED/HL950. Modules can be slot in and are fastened by the
front panel screws.
Figure 10: Location of the WIF slot
The LIF module includes either an E1 Interface Module or a Legacy
V.35/V.36/X.21 Interface Module for connection to the local network
as described in the following sections.
LIF E1 LIF E1
LIF E1 LIF E1 LIF E1
Figure 11: Connectors/indicators on the LIF E1 Module
For 120 ohms balanced operation For 120 ohms balanced operation
For 120 ohms balanced operation, connect a 120 ohms For 120 ohms balanced operation For 120 ohms balanced operation
(default strapping) twisted pair cable with four wires (2 pairs) to the
RJ45 connector.
For 75 ohms unbalanced operation For 75 ohms unbalanced operation
For 75 ohms unbalanced operation For 75 ohms unbalanced operation, connect two 75 ohms For 75 ohms unbalanced operation
coaxial cables to the DIN 1.0/2.3 connectors.
NOTE! NOTE! NOTE!
NOTE! NOTE! 120 ohms and 75 ohms cables cannot be connected simul-
taneously. When using 75 ohms unbalanced operation, you have to
change the strapping on the E1 card. The procedure is described on
the next page.
The RJ45 connector has two LEDs. The left LED (Carrier) lit when
receive carrier is detected and the right LED (Sync) indicates when the
board is searching for frame synchronization.
RJ45
DIN 1.0/2.3
Connector
Connectors
Physical Interfaces 9