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LB Line Card, BA-6500-010/01

The LB (Local Battery / Magneto) Line Card is designed to connect up to four telephones and can be located in any standard line card slot in the telephone concentrator. Voltage Dependant Resistors (VDR’s) are incorporated across each line to protect against high voltage transients. Note: Additional external protection is provided in the form of in-line fuses for current protection and Gas Discharge Tubes (GDT’s) for over-voltage protection.