ADTRAN NT1 T400 User manual

NT1 Type 400
NT1 Type 400 Standalone 1212016L1
NT1 Type 400 Circuit Pack 1212010
USER MANUAL
61212016L1-1B
January 1999

This device complies with Part 15 of the FCC rules. Operation is subject to
the following two conditions: (1) This device may not cause harmful in-
terference, and (2) this device must accept any interference received, in-
cluding interference that may cause undesired operation.
Changes or modifications to this unit not expressly approved by the par-
ty responsible for compliance could void the user's authority to operate
the equipment.
Canadian Standards Association
This device must be powered by a CSA approved power supply or a pow-
er supply meeting the requirements of CS03, Part I Section 1.4.2.
Warranties
ADTRAN will repair or replace this product within five years from the
date of shipment if it does not meet its published specifications or fails
while in service. For detailed warranty, repair, and return information, re-
fer to the ADTRAN Equipment Warranty and Repair and Return Policy
Procedure. Return Material Authorization (RMA) is required prior to re-
turning equipment to ADTRAN. (See inside back cover for phone number
and address to use.)
901 Explorer Boulevard
P.O. Box 140000
Huntsville, AL 35814-4000
Phone: [phone]
© 1999 ADTRAN, Inc.
All rights reserved.
Printed in USA.

FCCregulationsrequirethatthe followinginformationbe provided in this
manual:
1. This equipment complies with Part 68 of the FCC rules. On the
bottom of the equipment housing is a label that shows the FCC
registration number and Ringer Equivalence Number (REN)
for this equipment. If requested, provide this information to
the telephone company.
2. If this equipment causes harm to the telephone network, the tele-
phonecompanymaytemporarilydiscontinueservice. Ifpossible,
advance notification is given; otherwise, notification is given as
soon as possible. The telephone company will advise the custom-
er of the right to file a complaint with the FCC.
3. The telephone company may make changes in its facilities, equip-
ment, operations, or procedures that could affect the proper oper-
ation ofthis equipment; advance notification and theopportunity
to maintain uninterrupted service is given.
4. If experiencing difficulty with this equipment, please contact
ADTRAN for repair and warranty information. The telephone
companymayrequirethisequipmenttobedisconnectedfromthe
network until the problem is corrected, or it is certain the equip-
ment is not malfunctioning.
5. This unit contains no user serviceable parts.
6. An FCC compliant telephone cord with a modular plug is provid-
ed with this equipment. In addition, an FCC compliant cable ap-
propriatefor the dial backup optionordered isprovided with this
equipment. This equipment is designed to be connected to the
telephone network or premises wiring using an FCC compatible
modular jack, which is Part 68 compliant.
7. The following information may be required when applyingto the
local telephone company for leased line facilities.
Service
Type Digital Facility Interface Code Service Order Code Network Jacks
ISDN 02IS5 6.0F RJ-49C

ADTRAN YEAR 2000 (Y2K)
READINESS DISCLOSURE
ADTRAN has established a Year 2000 program to ensure that our prod-
ucts and operations will correctly function in the new millennium. ADT-
RAN warrants that all products meet Year 2000 specifications regardless
or model or revision. Information about ADTRAN’s Year 2000 compli-
ance program is available at the following:
Web Site www.adtran.com
Product Matrix www.adtran.com/Y2Kfax.html
Faxback Document Line [phone]
Y2K plans and product certifications
are listed in the matrix
Y2K Project Line [phone]
E-mail year [e-mail]

CUSTOMER INSTRUCTIONS
1. The mounting of the registered unit in the final assembly must
be made so that the registered unit is isolated from exposure to
any hazardous voltages within the assembly. Adequate separa-
tion and restraint of cables and cords must be provided.
2. Thecircuitryfromtheregisteredunittothetelephonelinemustbe
provided in wiring that carries no other circuitry unless specifical-
ly allowed by therules (such as PC and PRleads). PC board traces
carrying tip and ring leads shall have sufficient spacing to avoid
surge breakdown.
3. A modular plug or jack shall be provided which complies with
Part 68, Subpart F requirements for dimensions, tolerances metal-
lic plating.

CANADIAN EMISSIONS REQUIREMENTS
This digital apparatus does not exceed the Class B limits for radio noise emis-
sions from digital apparatus as set out in the interference-causing equipment stan-
dard entitled "Digital Apparatus," ICES-003 of the Department of
Communications.
Cet appareil numerique respecte les limites de bruits radioelectriques applicables
aux appareils numeriques de Class B prescrites dans la norme sur le materiel
brouilleur: "Appareils Numeriques," NMB-003 edictee par le ministre des Com-
munications.

CANADIAN EQUIPMENT LIMITATIONS
Notice: The Canadian Industry and Science Canada label identifies certified equip-
ment. This certification means that the equipment meets certain telecommunications
network protective, operational, and safety requirements. The Department does not
guarantee the equipment will operate to the user’s satisfaction.
Before installing this equipment, ensure that it is permissible to be connected to
the facilities of the local telecommunications company. The equipment must also
be installed using an acceptable method of connection. In some cases, the com-
pany’s inside wiring associated with a single-line individual service may be
extended by means of a certified connector assembly (telephone extension cord).
Compliance with the above conditions may not prevent degradation of service in
some situations.
Repairs to certified equipment should be made by an authorized Canadian main-
tenance facility designated by the supplier. Any repairs or alterations made by
the user to this equipment, or equipment malfunctions, may give the telecommu-
nications company cause to request the user to disconnect the equipment.
Users should ensure for their own protection that the electrical ground connec-
tions of the power utility, telephone lines, and internal metallic water pipe sys-
tem, if present, are connected together. This precaution may be particularly
important in rural areas.
Users should not attempt to make such connections them-
selves, but should contact the appropriate electric inspection
authority, or an electrician, as appropriate.
The Load Number (LN) assigned to each terminal device denotes the percentage
of the total load to be connected to a telephone loop which is used by the device,
to prevent overloading. The termination on a loop may consist of any combina-
tion of devices subject only to the requirement that the total of the Load Numbers
of all devices does not exceed 100.

61212016L1-1 NT1 T400 User Manual ix
Table of Contents
1.0 GENERAL...............................................................................1
1.01 Unit Overview .........................................................................1
1.02 Basic Rate Description ...........................................................2
1.03 Passive Bus Description.........................................................2
1.04 Powering TEs from the NT1 ...................................................2
1.05 Rear Panel..............................................................................2
2.0 INSTALLATION ......................................................................3
2.01 Setting the Option Switches....................................................3
2.02 Powering Up the NT1 Type 400 Standalone ..........................4
2.03 Connecting the Terminal Equipment ......................................4
3.0 TROUBLESHOOTING............................................................5
4.0 MAINTENANCE......................................................................6
5.0 REMOTE TESTING................................................................6
6.0 REPAIR AND RETURN..........................................................6
7.0 SPECIFICATIONS..................................................................7
APPENDIX A
NT1 TYPE 400 CIRCUIT PACK RACK INSTALLATION .................9
APPENDIX B
S/T BUS CONFIGURATIONS........................................................11

Table of Contents
x NT1 T400 User Manual 61212016L1-1
FIGURES
Figure 1. NT1 Type 400 Standalone Rear Panel ............................2
Figure 2. NT1 Type 400 Switch Option Locations...........................3
Figure A-1.NT1 T400 Circuit Pack Connector Pin Assignments....10
Figure B-1.Short Passive Bus Configuration..................................11
Figure B-2.Extended Passive Bus Configuration ...........................11
TABLES
Table 1. NT1 Type 400 Front Panel Indicators...............................1
Table 2. NT1 Type 400 Switch settings.........................................3
Table 3. NT1 Pin Assignments.......................................................4

61212016L1-1 NT1 T400 User Manual 1
1.0 GENERAL
1.01 Unit Overview
The ADTRAN NT1 Type 400 provides a basic rate interface be-
tween the customer’s ISDN Terminal Equipment (TE) and the
ISDN Network. Two interfaces areprovided for this purpose: con-
nection to the ISDN network is made by the “U” interface and
connection to the customer's ISDN TE is made by the S/T inter-
face.
The NT1 Type 400 is available in two configurations:
• The NT1 Type 400 Standalone with an internal power supply,
Part No. 1212.016L1.
• The NT1 Type 400 Circuit Pack, Part No. 1212.010.
The ADTRAN NT1 Type 400 Standalone consists of two parts, a
metal housing containing the power supply, connectors, and the
NT1 Type 400 Circuit Pack. The Circuit Pack can be removed from
the housing by removing the plastic front panel and sliding the
unit out of the housing. This allows access to the option switches
which may be reset by the customer. The NT1 Type 400 Circuit
Pack can also be purchased as a separate unit and mounted in a
Type 400 NCTE rack, as indicated in APPENDIX A.
LED Indicators
Table 1 describes the status of the LEDs located on the front panel
of the NT1 Type 400. There is a READY and ERROR indicator for
each port of the NT1 Type 400.
Table 1: NT1 Type 400 Front Panel Indicators
If an ERROR indicator is illuminated, check the flash rate of the
READY indicator to determine the source of the error. A faster 8
Hz flash rate (8 flashes per second) indicates a network problem.
A slower 1 Hz rate (1 flash per second) indicates an S/T interface
problem.
LED Color Description
READY Green S/T and U interfaces ready
to place call
ERROR Red S/T or U interface not ready
POWER Green Unit has power

.
2NT1 T400 User Manual 61212016L1-1
1.02 Basic Rate Description
ISDN Basic Rate Service consists of two “B” channels at 64 kbps
and a single “D” channel at 16 kbps. Basic Rate Service (2B+D Ser-
vice) provides a total of 144 kbps to the customer for the transport
of voice, circuit switched data, and packet switched data. Each
“B” channel can be used for voice or data. The “D” channel carries
the signaling information needed for call processing. The “D”
channel can also carry packet switched data using the X.25 proto-
col.
1.03 Passive Bus Description
The “S/T’’ interface used to connect to the customer TE has the
ability to connect multiple devices. This arrangement is referred
to as the “passive bus” and can be used to connect up to eight TEs
to the same Basic Rate line, as described in APPENDIX B.
1.04 Powering TEs from the NT1
The ADTRAN NT1 Type 400 can be used to provide power for
customer TEs. If the NT1 T400 circuit pack is used, a total of 12
watts is available. If the NT1 Type 400 Standalone unit is used, a
total of seven watts is available. This power can be provided by
Power Source 1 (PS1), which provides power over the transmit
and receive wire pairs used by the “S/T” interface and requires no
additional wire pairs; and by Power Source 2 (PS2), which pro-
vides power over an additional wire pair.
1.05 Rear Panel
The NT1 Type 400 Standalone rear panel contains three RJ45 con-
nectors, as illustrated in Figure 1. A single connector, labeled
“NETWORK,” is used to connect to the ISDN network. The re-
maining two connectors, labeled “CUSTOMER 1” and “CUS-
TOMER 2,” are used to interface to the customer’s TEs. These
connectors are wired in parallel, and can be used to connect mul-
tiple TEs in a passive bus arrangement.
Figure 1: NT1 Type 400 Standalone Rear Panel
NETWORK
CUSTOMER 1
CUSTOMER 2
115
VAC
60 HZ
.07 A

61212016L1-1 NT1 T400 User Manual 3
2.0 INSTALLATION
After unpacking the unit, immediately inspect it for possible ship-
ping damage. If damage is discovered, file a claim immediately
with the carrier, then contact ADTRAN Customer and Product
Service (CAPS) Department at the number listed in the back of the
manual.
2.01 Setting the Option Switches
Remove the Circuit Pack from the NT1 Standalone housing by re-
moving the plastic front panel and sliding the Circuit Pack out of
the front of the unit. Figure 2 illustrates switch option locations;
Table 2 lists the function of each switch.
Figure 2: NT1 Type 400 Switch Option Locations
Table 2: NT1 Type 400 Switch Settings
Refer to Appendix B to determine what type of bus and termina-
tion applies to your installation and to set the switches according-
ly.
Switch Description On Off
6 50 ¾ termination 50 ¾ None
5 50 ¾ termination 50 ¾ None
4 100 ¾ termination 100 ¾ None
3 100 ¾ termination 100 ¾ None
2 Long or short passive bus Long Short
1 Future use N/A N/A
SW1
FRONT
123456

.
4NT1 T400 User Manual 61212016L1-1
2.02 Powering Up the NT1 Type 400 Standalone
To power-up the NT1 Type 400 Standalone for the first time, per-
form the following procedures in order:
1. Plug the power cord into a grounded, 120 VAC, 60 Hz recepta-
cle.
2. Verify that the ERROR indicators are illuminated. After about
15 seconds, the READY indicators should flash at a 1 Hz rate.
Should any of these indicators fail to operate as stated, see Sec-
tion 3.0 Troubleshooting on page 5.
Table 3 gives pin assignments for the unit.
Table 3: NT1 Pin Assignments
2.03 Connecting the Terminal Equipment
After successfully powering up the NT1 Type 400, the ERROR in-
dicators should be on and the READY indicators should be flash-
ing. Make sure that the TEs are properly terminated. Plug each TE
into one of the S/T connectors at the rear of the unit.
After the TE powers up, the ERROR indicators should go out.
There may be some delay between plugging in the TE and the ER-
ROR indicators going out, depending on the specific TE in use. If
the ERROR indicators fail to go out, see Section 3.0 Troubleshooting
on page 5.
When the ERROR indicators go out, the READY indicators should
illuminate. The TE will now be ready to place and receive calls.
There may be a slight delay between the appearance of the
Pin Network Customers 1 & 2
1 No Connection No Connection
2 No Connection No Connection
3 No Connection S/T Interface Receive
4 U-Interface S/T Interface Transmit
5 U-Interface S/T Interface Transmit
6 No Connection S/T Interface Receive
7 No Connection PS2 (Negative)
8 No Connection PS2 (Positive)

61212016L1-1 NT1 T400 User Manual 5
READY indicators and the TE’s ability to place and receive calls,
depending on the specific TE in use. If the READY indicators fail
to illuminate or if you are unable to place or receive calls, see Sec-
tion 3.0 Troubleshooting on page 5.
3.0 TROUBLESHOOTING
If you encounter problems during installation, the following lists
possible symptoms and solutions. If these solutions fail to correct
the problem, contact ADTRAN Technical Support at
888 4ADTRAN.
POWER indicator not illuminated.
• NT1 Type 400 needs replacement.
• Insufficient power to the NT1 Type 400.
ERROR indicators illuminated, READY indicators flash at a faster
8 Hz rate.
Network activation failure:
• Wall jack wiring is incorrect: Check wall jack.
• Problem with ISDN line: Contact telephone company.
ERROR indicators illuminated, READY indicators flash at a slow-
er 1Hz rate.
Local bus failure:
• TE not connected: Connect TE.
• TE not receiving power from NT1: Consult TE documentation.
• TE not terminated properly: Correct termination.
• TE ISDN parameters not configured properly: Reconfigure TE
(SPIDs, LDNs, switch type, etc.).
READY indicators do not illuminate.
• Problem with ISDN network: Contact telephone company.
• ISDN line not plugged into U jack: Plug ISDN line into U jack.
Unable to make or receive a call.
• TE is not compatible with ISDN network: Contact telephone
company.
• TE ISDN parameters not configured properly: Reconfigure TE
(SPIDs, LDNs, switch type, etc.).

.
6NT1 T400 User Manual 61212016L1-1
4.0 MAINTENANCE
The ADTRAN NT1 Type 400 requires no routine maintenance to
operate. In case of equipment malfunction, refer to Sections 5.0
and 6.0 below, and/or remove the unit and replace it with another
unit optioned in an identical manner.
5.0 REMOTE TESTING
Network test features include a loopback test initiated at the cen-
tral office. This test confirms network integrity to the NT1 Type
400.
6.0 REPAIR AND RETURN
Repairs should not be performed in the field. Repair services can
be obtained by returning the unit to the ADTRAN Customer and
Product Service (CAPS) Department at the address listed in the
back of this manual.

61212016L1-1 NT1 T400 User Manual 7
7.0 SPECIFICATIONS
LOOP 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 V, zero-to-peak
Tx Source Impedance: As per ANSI T1.601
Rx Source Impedance: As per ANSI T1.601
Receiver Sensitivity: As per ANSI T1.601
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: .75 V, zero-to-peak
Tx Source Impedance: As per ANSI T1.605
Rx Source Impedance: As per ANSI T1.605
Receiver Sensitivity: As per ANSI T1.605
MECHANICAL:
Size: 5.625” H x 6” D x 1.375” W
Weight: 10 oz.
Mounting: Mounts in Type 400 equipment shelves
POWER: On-Card Dissipation
NT1 Type 400 Standalone: 115 VAC Internal Power Supply
60 Hz, .07 amps
Sources S/T Power to 7W
NT1 T400 Circuit Pack: -48 VDC
1.1 Watt Maximum On-Card Dissipation
Sources S/T Power to 12W
ENVIRONMENTAL:
Temperature: Operating 0 to +50 °C
Storage -20 to +70 °C
Relative Humidity: Up to 95%, noncondensing

.
8NT1 T400 User Manual 61212016L1-1

61212016L1-1 NT1 T400 User Manual 9
APPENDIX A
NT1 TYPE 400 CIRCUIT PACK
RACK INSTALLATION
The ADTRAN NT1 Type 400 Circuit Pack, Part No. 1212010, can bepurchased as
a separate unit for installation in a Type 400 NCTE rack. This configuration pro-
vides a central location for the NT1 in a customer's wiring closet, and facilitates bat-
tery backup. Refer to ADTRAN's
Building a Battery Protected ISDN Phone System
for a complete description of the centrally located battery back-up system.
Figure A-1 shows the connector pin assignments of the ADTRAN NT1 Type 400
Circuit Pack. The Type 400 rack supplies -48V to the Circuit Pack. In addition, the
Type 400 rack provides access to the necessary wire pairs for connection to the
network and the customer's TE.
After ensuring that connections to the Type 400 rack are correct, and the circuit
pack has been optioned properly, insert the circuit pack into the Type 400 rack by
firmly pushing the circuit pack into one of the available slots. The circuit pack
should slide in smoothly and snap into place.

.
10 NT1 T400 User Manual 61212016L1-1
Figure A-1: NT1 T400 Circuit Pack Connector Pin Assignments
S/TTransmit
(Customers 1 & 2
in parallel)
UTransmit/Receive
S/TTransmit
(Customers 1 & 2
in parallel
55
53
51
49
47
45
43
41
39
37
35
33
31
29
1
3
5
7
9
11
27
25
23
21
19
17
15
13
56
54
52
50
48
46
44
42
40
38
36
34
32
30
2
4
6
8
10
12
28
26
24
22
20
18
16
14
DR
DT
TT
TR
-48V
Frame GND
Backup Power
1
S/T Power M
E
GND
Frame
GND
R1
T1
When pin 25 is pulled to ground,
the NT1Type 400 is signaled that
its battery backup is in use.
1

.
61212016L1-1 NT1 T400 User Manual 11
APPENDIX B
S/T BUS CONFIGURATIONS
SHORT PASSIVE BUS
The short passive bus configuration allows the connection of up to eight TEs at any
point on the bus. The bus length is limited to 600 feet, as illustrated in Figure B-1.
To select this bus configuration, set switch 1-2 to the Short position. The bus ter-
mination resistors (TRs) can be placed at any point along the bus. If the TEs have
internal TRs that can be optioned, only one TE's TRs should be enabled. The TRs
in the NT1 Type 400 are enabled by setting switches 1-3 and 1-4 to the ON posi-
tion, and switches 1-5 and 1-6 to the OFF position. If the unterminated TEs are
placed within 20 feet of the NT1, set switches 1-3 and 1-4 to the OFF position, and
switches 1-5 and 1-6 to the ON position. The switch settings should always be
maintained, unless an external 100 ¾ resistor is being used. If an external TR is
used, set switches 1-3 through 1-6 to the OFF position.
Figure B-1: Short Passive Bus Configuration
EXTENDED PASSIVE BUS
This bus configuration allows the connection of up to eight TEs at ranges up to
3000 feet from the NT1 Type 400, as illustrated in Figure B-2.
To select this mode, set switch 1-2 to the Long position. A TR must be centrally
located to the TEs. The TRs in the NT1 Type 400 are enabled by setting switches
1-3 and 1-4 to the ON position, and switches 1-5 and 1-6 to the OFF position.
These switch settings should always be maintained, unless an external 100 ¾ re-
sistor is being used. If an external TR is used, set switches 1-3 through 1-6 to the
OFF position.
Figure B-2: Extended Passive Bus Configuration
TR TR* NT1
TE TE TE * Is not needed if NT1Õs
TR
is used
600
FEET
TR TR* NT1
TE TE * Is not needed if NT1Õs
TR
is used
3000
FEET
160
FEET