The ISDN Card (T1/PRI Module) allows for expansion of the DX-120 system CO line interface to a capacity maximum of 23 Digital CO line ports.

Key Features:

• Mfr. Part #: 7285-00
• 23 B-channel & 1 D-channel
• 9 LEDs on the PCB provides: Alarm status of T1 trunk, In-use status, Synchronous clock enable status
• Direct Inward Dialing support (DID)
• Flexible outbound Caller ID
• Incoming caller name support
• Fractional channels supported
• Does NOT include an integrated CSU/DSU
• RJ45 type jack
• Condition: Refurbished