BSTU/QSTU - TDM & Ethernet leased lines over SDHSL.BIS

Product Overview

The BSTU and QSTU product families enable network operators to transport Ethernet and TDM traffic over one or two copper wire-pairs. The termination units can be used in the access network or in any point-to-point application. The underlaying technology is SHDSL.bis and various interfaces for nx64 kbit/s, 2 Mbit/s or Fast Ethernet user traffic are available.

BSTU - SHDSL.bis Termination Units

The BSTU offers professional solutions for the delivery of business voice and data services with bandwidths up to 11,4 Mbit/s by using the SHDSL (Single pair Highspeed Digital Subscriber Line) technology according to ITU-T G.991.2. With its modular design and wide range of interfaces the BSTU is a very flexible solution, that can be used to meet specific customer requirements. The BSTU also includes a self learning Layer-2 switch with VLAN transparency.

QSTU - Quad- SHDSL.bis Termination Units

The QSTU is a SHDSL termination unit equipped with 4 SHDSL interfaces and (depending on the operating mode) up to 4 autonomous G.703 subscriber interfaces, enabling an ULAF+ subrack to host up to 64 2 Mbit/s lines.

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Features
Data Sheets

Simultanous transport of E1 and V.35/V.36/X.21 data
Simultanous transport of E1 and Fast Ethernet traffic
Integrated Remote Power Supply (RPS) for remote feeding of repeaters or other termination units
Integrated clock transport for network synchronisation applications
Low power consumption
Configurable for one or two wire-pair operation

Features

SHDSL.bis over 1, 2 (BSTU) or 4 (QSTU) wire pairs
up to 4 E1 systems per unit
up to 11.4Mbit/s Ethernet payload
add/drop: ‘Fractional E1’ and Eth or nx64kbit/s data into 2Mbit/s G.704
add/top: E1 and Eth or nx64kbit/s data over 1 or 2 wire pairs
8 stage repeater support (BSRU/BSRU+)
optional integrated remote power supply
versatile clocking options
units are configurable as LT or NT

Supported Standards

ITU-T G.991.2 SHDSL
ITU-T G.994.1 Handshake
ETSI TS 101 524 SDSL
ITU-T G.703 Physical signal characteristics
ITU-T G.704 Structured E1
ITU-T I.431 Primary rate ISDN
ITU-T V.35
ITU-T V.36
ITU-T X.21
IEEE 802.1D MAC Bridging
IEEE 802.3i 10BASE-T
IEEE 802.3u 100BASE-TX
IEEE 802.3x Flow Control
ITU-T G.823 Jitter and Wander
ITU-T G.826 Error Performance Parameters

Data Sheets

BSTU

1 and 2 wire-pairs SHDSL.bis Termination Unit for TDM and Ethernet transport

[ File type: PDF | File size: ca. 375 KB ]

QSTU

4 wire-pairs SHDSL.bis Termination Unit for 4x E1 transport

[ File type: PDF | File size: ca. 470 KB ]

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