ADTRAN NT1 ACE - Manual

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
T1.605-1991
■ Supports multiple switch
vendors Lucent 5ESS, NTI
DMS-100, Siemens EWSD,
NEC, and National ISDN-1
■ 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
■ Provides U-interface
lightning protection
■ Standard five-year
warranty
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 desk-top use. The NT1
ACE is powered by the wall-mount power
supply included with the unit. The wall-mount
power supply provides up to 8.9 W of power for
terminal equipment. The NT1 ACE monitors
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.
READY
ERROR
POWER
NT1 ACE
ISDN
Switch
ISDN Phone
U-Interface
Local Loop
S/T
BUS
Customer Premises
Telephone
Company Office
NT1 ACE
Video-
Conference
Equipment