Hi
TLU76 is a digital trunkline for 2Mbit Common Channel signalling (30B+D). The board can be adapted for "no-signal" sending upon major equipment failure (MEF). Furthermore the board can be adapted for earthing the screen in the coaxial cable (for both receive and transmit).
ELU26 is a digital extension line card with four ISDN S-interfaces. Each S-interface has two wires for transmission and two wires for reception of signals.
The board is equipped with four PCB current limiting devices per 4-wire line. If the PCB current limiting device blows, it shall be replaced with a fuse.
HI
TLU79 is a digital trunk line card with four ISDN T-interfaces. Each T-interface has two wires for transmission and two wires for reception of signals.
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