Schmid Watson Specifications download pdf (Page 17)

Revision: 2006-04-27

2-1

2 Overview

2.1 Introduction

The Watson 5 Ethernet modems are SHDSL transmission systems compliant to ITU-T G.991.2 An-

nex B (G.SHDSL.bis) and to ETSI TS 101 524 (ETSI eSDSL).

SHDSL uses Trellis-coded PAM-16 and PAM-32 linecodes supporting multiple linerates as well as

1-pair, 2-pair and 4-pair DSL transmission.

The Watson 5 Ethernet modems are available as plugin cards and as tabletop units. Both plugin

cards and tabletops can work as DSL master modems (STU-C) and as DSL slave modems (STU-

R).

The modems can be configured with an RS-232 terminal through a commandline interface (Moni-

tor).

For remote management a Telnet access to the Monitor is available. The plugin modems also have

an SNMP agent integrated. One agent can control all plugin modems in a subrack and all tabletop

modems connected to the subrack modems.

2.2 Applications

Figure 2-1 shows deployment of Watson 5 Ethernet to deliver Point – to – Multipoint Ethernet Ser-

vices:

Ethernet

Transport

4 x Ethernet

22.8 Mbps

4 x Ethernet

9.2 Mbps

1 x Ethernet

4.6 Mbps

1 x Ethernet

2.3 Mbps

n x Ethernet

10/100 Mbps

1 pair/3 km

2 pairs/3 km

4 pairs/3 km

4 pairs/1.5 km

Figure 2-1: Point-Multipoint Ethernet Services

Several Ethernet plugin cards are installed in a subrack at the central office or the point of pres-

ence. Depending on the service offered each plugin can serve between one and four customers. At

the customer premises either a tabletop modem (for linerates up to 4.6 Mbps) or a plugin card in a

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Schmid Watson Specifications Page 17