ISDN_NT1_Data_Sheet ISDN NT1 Data Sheet

User Manual: ISDN_NT1_Data_Sheet

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he 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 sub-
scriber’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 inter-
faces conform to ANSI and CCITT standards and perform all
Layer 1 functions.
The NT1 ACE is designed with aesthetics as well as function-
ality in mind. The unit is enclosed in an attractive, durable plas-
tic housing appropriate for desk-top use. The NT1 ACE is pow-
ered by the wall-mount power supply included with the unit or
with an external power source. The wall-mount power supply
provides up to 10 watts of power for terminal equipment. The
NT1 ACE monitors the S/T interface for overcurrent fault con-
ditions. 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 1500 meter range of the interface,
or multiple terminals of arbitrary spacing within 200 meters.
Also, termination impedance options include 50 ohm, 100
ohm, or unterminated. The NT1 ACE is protected from light-
ning 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, and Network Test.
T
Compatible with 2B1Q basic rate
services and standard ISDN terminals
Provides 2B+D basic rate service
Conforms to ANSI T1.601-1992
and ANSI T1.605-1992
Supports multiple switch vendors AT&T
5ESS, NTI DMS-100, Siemens EWSD,
and National ISDN-1
Responds to Quite 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
61202.019L1-8B/NT1 ACE BRO; 12/1/95 1:18 PM Page 1
ISDN Switch
TA
NETWORK
UPOWERS/T S/T
LOCAL
READY
ERROR
POWER
ADTRAN
NT1 ACE
Customer Premises
NT1 ACE
NT1 ACE
Telephone Company Office
U-Interface
Local Loop
S/T
BUS
ISDN Phone
NETWORK INTERFACE
LINE
2-wire (TIP and Ring)
OPERATING MODE
Full-duplex
DATA RATE
160 kbps total; 144 kbps
available to customer
SIGNAL FORMAT
2B1Q
OUTPUT AMPLITUDE
2.5 Volt, Zero-to-Peak
TXSOURCE IMPEDANCE
As per ANSI T1.601-1992
RXSOURCE IMPEDANCE
As per ANSI T1.601-1992
RECEIVER SENSITIVITY
As per ANSI T1.601-1992
FCC APPROVAL
FCC Part 15, Class B
CUSTOMER INTERFACE
LINE
4-wire (Tx and Rx Pair)
OPERATING MODE
Full-duplex
DATA RATE
192 kbps total; 144 kbps
available to customer
SIGNAL FORMAT
Alternate mark inversion, 100% duty cycle
OUTPUT AMPLITUDE
0.75 V, Zero-to-peak
TXSOURCE IMPEDANCE
As per ANSI T1.605-1992
RXSOURCE IMPEDANCE:
As per ANSI T1.605-1992
RECEIVER SENSITIVITY
As per ANSI T1.605-1992
SWITCH COMPATIBILITY
AT&T 5ESS, NTI DMS-100, NEC
National ISDN-1
PHYSICAL
SIZE
1.35” H, 3.75” D, 6.25” W
WEIGHT
9.5 oz
POWER
-48 VDC, 1.1 W dissipation
Sources S/T power to 10 W
ENVIRONMENTAL
OPERATING TEMPERATURE
0°C to 50°C
STORAGE TEMPERATURE
-20°C to 70°C
RELATIVE HUMIDITY
Up to 95%, non-condensing
ADTRAN is an ISO 9001
registered company.
61202.019L1-8B
June 1995
Specs subject to change without notice
Printed in U.S.A.
Printed on recycled paper
©ADTRAN, Inc. 1995
CORPORATE OFFICE
901 Explorer Boulevard
Huntsville, Alabama 35806
(800) 827•0807
Fax (205) 971•8699
SALES OFFICES
Pasadena, CA
(800) 788•5408
Local (818) 577•5400
Denver, CO
(303) 220•4777
Atlanta, GA
(800) 332•6945
Local (404) 806•9788
Chicago, IL
(708) 851•6699
Kansas City, MO
(913) 663•3939
St. Louis, MO
(314) 256•4433
New York, NY
(203) 261•3554
Philadelphia, PA
(610) 559•6000
Dallas, TX
(214) 869•7699
Washington D.C.
(703) 777•3037
Canada
(416) 805•9937
ORDERING INFORMATION
Equipment Part Number
NT1 ACE & wall-mount
power supply 1202019L1
61202.019L1-8B/NT1 ACE BRO; 12/1/95 1:18 PM Page 2

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