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-BR1TE
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
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.
