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The Tone Commander

NT1B-300TC converts an

ANSI standard 2B1Q ISDN

U-interface from the telco

Central Office to an S/T

interface to connect to local

customer terminal

equipment. Both

point-to-point and multipoint

ISDN terminal equipment

configurations are

supported.

The NT1B-300TC complies with ANSI T1.601-1992 and

T1.605-1991 interface standards, including MLT (Mechanized

Loop Testing) requirements, and is compatible with National-1

and National-2 ISDN standards. In addition, it may be used as a

drop-in replacement in Lucent NT1B-300 applications, and is

compatible with the Tone Commander NT1B-300 Rack, Lucent

NT1B-310 Rack, and SEI PowerRack 300.

Specifications

Operating Voltage ..............................34–56.5 VDC

Power Consumption .............................0.65 W typical

Physical Dimensions ...........................4.5“ x 2.1” x 1.1“

Weight ...............................................4oz.

Operating Temperature....................0°–50°C(32° – 122° F)

Humidity ...........................5%to95%, non-condensing

Standards Compliance ............ANSI T1.601-1992, T1.605-1991

FCC Part 15, Part 68

UL, cUL Listed

Optional Equipment (not supplied with NT1)

901034 Desktop Power Supply

PS-50 Bulk Power Supply

8-Position Line Cords

Contact Teo for ordering information.

Important Safety Instructions

Never install telephone wiring during a lightning storm.

Never install telephone jacks in wet locations unless the jack

is specifically designed for wet locations.

Never touch uninsulated telephone wires or terminals unless

the telephone line has been disconnected at the network

interface.

Use caution when installing or modifying telephone wires.

When powering the NT1 through the Power connector, use

only the Tone Commander Desktop Power Supply (Model

901034).

Do not mount the NT1B-300TC within 12“ of a heat source.

FCC Requirements

The Tone Commander NT1B-300TC has been tested and found to

comply with the limits for a Class B digital device, pursuant to Part

15 of the FCC Rules. These limits are designed to provide

reasonable protection against harmful interference when the

equipment is operated in a residential environment. This equipment

generates, uses, and can radiate radio frequency energy and, if not

installed and used in accordance with the instruction manual, may

cause harmful interference to radio communications. However,

there is no guaranty that interference will not occur in a particular

installation. If this equipment does cause harmful interference to

radio or television reception, which can be determined by turning

the equipment off and on, the user is encouraged to try to correct

the interference by one or more of the following measures:

Where it can be done safely, re-orient the receiving television or

radio antenna.

To the extent possible, increase the separation between the

telephone equipment and the television, radio, or other

equipment.

If your telephone equipment runs on AC power, plug your product

into an AC outlet that is not on the same circuit as the one used

by your radio or television receiver.

The Tone Commander NT1B-300TC complies with Part 68 of the

FCC Rules. The label affixed to this equipment contains, among

other information, the FCC Registration for this equipment. You

must, upon request, provide this information to your telephone

company

The following jacks must be ordered from the telephone company in

order to interconnect this product with the public communication

network: RJ49C. A plug and jack used to connect this equipmrnt to

the premises wiring and telephone network must comply with the

applicable FCC Part 68 rules and requirements adopted by the

ACTA.

If your NT1B-300TC causes harm to the telephone network, the

telephone company will notify you in advance that temporary

discontinuance of service may be required. But if advance notice

isn't practical, the telephone company will notify the customer as

soon as possible. Also, you will be advised of your right to file a

complaint with the FCC if you believe it is necessary.

Your telephone company may make changes in its facilities,

equipment, operations or procedures that could affect the proper

functioning of your equipment. If this happens, the telephone

company will provide advance notice in order for you to make

necessary modifications to maintain uninterrupted service.

Repair work on this unit must be done by the manufacturer, Teo.

Connectors

Two terminal connectors are provided for convenient terminal

installation; both are parallel connected to the S/T interface.

Pins 7 and 8 of the S/T and U Line connectors (power pins) also

have metallic interconnection.

Termination Switch

The termination switch is located on the front of the NT1.

Available settings are OFF, 100W, and 50W.

Set the termination switch to match the premises wiring

between the NT1 and the terminals. Several typical wiring

configurations are shown below, with the appropriate

termination switch setting.

Fixed or adaptive timing selection is not required.

The use of Category 3 or better unshielded twisted pair

cable with T568A or T568B connector wiring is

recommended. Distances shown are maximum for

24-gauge wiring cable, and may vary for other cable types.

NT1B-300TC

Installation

Instructions

POWER

STATUS

ULINE

RACK

POWER

3–

6–

Rx+

Rx-

4–

5–

Tx+

Tx-

7–

8–

-48V

-48VRTN

1 2

Inhaltsverzeichnis

Seite 1 - NT1B-300TC

The Tone CommanderNT1B-300TC converts anANSI standard 2B1Q ISDNU-interface from the telcoCentral Office to an S/Tinterface to connect to localcustomer

Seite 2 - February 2012

Rack MountingInsert the NT1B-300TC into the appropriate slot in the rack. Anyunit may be inserted or removed from an operational rackwithout affecting

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