NT1 ACE
ISDN Network Termination
Product Features
■Compatible with 2B1Q basic rate services and standard ISDN terminals
■Provides 2B+D basic rate service
■Conforms to ANSI T1.601- 1992 and ANSI
■Supports multiple switch vendors Lucent 5ESS, NTI
■Responds to Quiet Mode and Insertion Loss Test
■Provides automatic overcurrent protection for S/T power
■Selectable terminating impedance; 50 Ohm,
100 Ohm, or unterminated
The ADTRAN® NT1 ACE™ provides the network termination for 2B1Q ISDN basic
rate service. The NT1 ACE provides a 2B+D basic rate interface between the subscriber’s terminal equipment and the ISDN network. Basic rate ISDN consists of two 64 kbps B channels and a single 16 kbps D channel. Connection to the ISDN network is made with a U interface. Connection to the subscriber’s terminal equipment is by an S/T interface. The U and the S/T interfaces conform to ANSI and CCITT standards and perform all Layer 1 functions.
The NT1 ACE is designed with aesthetics as well as functionality in mind. The unit is enclosed in an attractive, durable plastic housing appropriate for
the S/T interface for overcurrent fault condi- tions. In the event of such a condition, the unit automatically limits the amount of delivered current until the fault condition is removed.
As many as eight passive bus devices may be connected to the S/T interface of the NT1. These connections can be in one of the following two modes: multiple terminals within 50 meters of each other over the full 1,500 meter range of the interface, or multiple termi- nals of arbitrary spacing within 200 meters. Also, termination impedance options include
50 Ohm, 100 Ohm, or unterminated. The NT1 ACE is protected from lightning and harmful line transients on the network interface.
Three LED status indicators on the NT1 ACE aid in fault isolation. Indicators display the status for Power, Network Ready, Network and Customer Errors.
■Provides
■Standard
Telephone |
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Company Office |
| Customer Premises |
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ISDN | ERROR | NT1 ACE | S/T | |
Switch |
| READY |
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Local Loop | POWER |
| BUS | |
Video-
Conference
Equipment
NT1 ACE
ISDN Phone
