ADTRAN T-BR1TE - Manual

The ADTRAN T-BR1TE is an economical way of offering Basic Rate ISDN

by extending Basic Rate Service from an ISDN-equipped PBX or switch over
T1 carrier lines to remote locations. Using the T-BR1TE, the S/T-interface
can be deployed from a remote location serving a maximum of 3,000 feet,
making it ideal for customer-owned networks.

The T-BR1TE is a standard D4 channel unit that plugs into a T1 multi-

plexer such as a D4 channel bank, SLC-96, ADTRAN ACT, or BR1TE bank.
The T-BR1TE transports 2B+D information over T1 carriers by inserting the
two B channels at 64 kbps and a single D channel at 16 kbps into three
DS-0 time slots. The Basic Rate Interface information is transported from a
T-BR1TE in the T1 multiplexer at the switch location, over the T1 carrier, to
the remote T-BR1TE and T1 multiplexer. The T-BR1TE can be optioned as
either the adjacent to the switch unit or the adjacent to the customer unit,
reducing inventory requirements.

The T-BR1TE provides a standard 4-wire S/T-interface which operates at

192 kbps full-duplex and utilizes separate twisted wire pairs for transmit
and receive signals. The S/T-interface conforms to the ANSI T1.605-1992
S/T-interface standard and the CCITT I.430 Layer 1 standard.

The T-BR1TE can supply power in a PS1 or PS2 arrangement for up to

eight pieces of terminal equipment in a short or extended passive bus. This
power is derived from the T1 multiplexer -48 VDC supply. PS1 (phantom
power) provides power on the transmit and receive wires of the S/T-interface.
PS2 provides power to the terminal equipment over an additional dedicated
pair of wires. In both cases, the T-BR1TE monitors the S/T-interface for an
overcurrent fault condition. In the event of such a condition, the T-BR1TE
automatically limits the amount of current being delivered until the fault
condition is removed.

The front panel of the T-BR1TE contains a display, controls, and Bantam

test jacks for local test access.

P R O D U C T F E A T U R E S

■

Extends range of ISDN service
to remote locations

■

Transports ISDN Basic Rate
Interface (2B+D) information
over T1 carriers

■

Provides power for up to eight
terminal equipment units

■

Eliminates the need for an NT1
by delivering the ISDN S/T-
interface directly to the TE

■

Industry standard D4 channel
unit plugs into ADTRAN ACT or
BR1TE bank

■

Complies with ANSI T1.605-1992
and CCITT I.430 specifications

■

Supports multiple switch
vendors including Lucent 5ESS

®

,

Northern Telecom DMS-100

™

,

and Siemens EWSD

®

■

Built-in maintenance and
testability features

■

Provides automatic overcurrent
protection for the S/T Bus

■

Industry leading 5 year
warranty

T- B R 1 T E

I S D N T - B A S I C R A T E
T R A N S M I S S I O N E X T E N D E R