Specifications

10
MULTI-FUNCTION LINE DRIVER
SW2 Positions 6 and 7: 2-Wire vs. 4-Wire Operation
Set position 6 of switch SW2 to determine whether the Multi-Function Line
Driver operates in 2-wire or 4-wire mode. (For 2-wire mode to work, SW1
position 8 must be ON.) In 4-wire mode, set position 7 of switch SW2 to
determine whether the MFLD operates in full duplex or half-duplex.
SW2-6
SW2-7 Operation
On On 4-wire half-duplex
On Off 4-wire full duplex
Off On 2-wire (half-duplex only)
SW2 Position 8: V.52 and V.54 Diagnostic Testing
To reset the V.54 circuit, turn switch S2 position 3 ON, then back OFF.
SW2-8
Test Mode
Off Tests Enabled (default)
On Tests Disabled