Network Termination Units (NT1)

Network Termination Units (NT1) units are reliable, compact and versatile. They provide a direct interface between the switch and an ISDN telephone. The NT1 is a small box or circuit card located at the users premises at the end of the line coming in from the service provider. The NT1 converts the 2-wire U-interface from the 5ESS^®-2000 Switch to a 4-wire T-interface for the ISDN device.

The NT1 connects the U-interface to the S/T interface on the phone and performs such critical functions as performance monitoring, multiplexing and line termination. With a Mean Time Between Failure Rate well above the norm, Lucent NT1 units are among the most reliable in the industry.

NT1s are available in a number of models and configurations. These economical, compact units fit easily in small spaces and are easy to install.

NTB-300 The NTB-300 is an in-line NT1. It is specifically designed for compatability with the NT1B-310 Rack Module. 2 Status indicators Protection devices on all external interfaces Low power consumption Easily accessible configuration switches Advanced SMD technology Self testing features Built-in multi-point capability NT1B-310 Rack Module

NT1D-300 The NT1D-300 is a stand-alone 12-fold NT1. 12 NT1 circuits in one unit Low cost per line Optimized for ISDN Centrex applications Rack-mountable in 19-inch rack Wall-mountable; up to four units can be stacked Compatible with industry-standard external power supplies Two RJ45 connector per T-interface Eliminates separate RJ45 Patch panel

NT1L-230 The NT1L-230 NT1 is located at the subscriber's premise. 2 Status indicators Protection devices on all external interfaces NT1 powering by whichever polarity Low power consumption Advanced SMD technology Self testing features Multi-point with BR 851 adapter

NT1P-230 The NT1P-230 is a rack mounted NTI. It is specifically designed for compatibility with the NTIM210 rack module or the PoweRack-96. 2 Status indicators Protection devices on all external interfaces NT1 powering by whichever polarity Low power consumption Easily accessible configuration switches Advanced SMD technology Reset Switch Self testing features Built-in multi-point capability

Rack Modules

There are several version of racks to mount the NT1 Units. The NT1B-310 rack houses NT1B-300 NT1s in multiples of up to 12 per rack. This rack can be installed in an equipment cabinet or on a wall. It can be ordered with an integrated -48V power supply or without power.

NT1B-310 Rack Module

PoweRack-96
The PoweRack-96 supports up to 48 NT1P-230 units with power and battery backup.

Power

Lucent Technologies offers power sources ranging from individual desk units to bulk power supplies supporting as many as 48 NT1s and 96 ISDN telephones.

More details are available through Lucent Technologies customer representatives or by email request to this Home Page site.

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