Digital Link 300-00920-01 dual sync card

Product Description

Digital Link 300-00920-01 Dual Synchronous Serial Interface Card

This is a specialized interface card designed for Digital Link (later ADTRAN) Channel Service Unit/Data Service Unit (CSU/DSU) units. It provides two independent synchronous serial ports, commonly used for T1/E1, fractional T1, or dedicated leased-line data connections in legacy telecom and enterprise networks.

Key Specifications:

• Part Number: 300-00920-01

• Function: Dual synchronous serial interface (likely V.35, RS-530, or RS-422)

• Compatibility: Digital Link/ADTRAN CSU/DSU chassis (specific models vary)

• Ports: Two independent data ports with clocking and control signals

• Typical Use: Connects CSU/DSU to routers, multiplexers, or data terminal equipment

Applications:

• Spare part for maintaining legacy Digital Link/ADTRAN CSU/DSU equipment

• Repair of T1/E1 or dedicated line termination devices in older network installations

• Component salvage for connectors, ICs, or other usable hardware