440A4 ISDN Terminating Resistor Filter Adapter is used to balance the cable plant between the receiver and transmitter on the Integrated Services Digital Network (ISDN) T-interface.

Filter Adapter Features:

• Provides the standard 100 ohm circuit termination used on ISDN Basic Rate Interface (BRI) circuits
• For placement in the communication closet or in the work area
• The 440A4 consists of a 1 foot (305mm) section of a 4-pair cable connected to one end of a flame-retardant plastic housing
• The cord is attached to the housing with the release tab of the plug cut flush to the jack
• Removal can be accomplished with the use of a small tool such as a screwdriver
• The opposite opening of the housing is equipped with an 8 position modular jack