SHDSL Modem

The SHDSL modem is a state-of-the-art baseband modem offering full duplex transmission up to 4.6Mbps over a single or dual two-wire unconditioned unshielded twisted-pair cable. The line speed of the modem can be adapted to optimise the throughput as a function of the characteristics of the local loop. The equipment is based on a new modulation technology called TC-PAM (Trellis Coded Pulse Amplitude Modulation), which guarantees higher speeds and longer loop performance. A complete range of plug-in interface boards makes the SHDSL modem ideal for interfacing with almost any application. Not only traditional serial interfaces such as V.35, V.36, RS-530 and X.21, but also G.703 and direct Ethernet 10BaseT connections with integrated bridge or router functionality are available. All these interface boards can be exchanged in only a few seconds.

Features and Benefits

High-speed baseband modem for use on an unshielded single or dual twisted copper pair
Based on the G.SHDSL standard for higher speeds and longer loop ranges
Variable line-transmission rates up to 4.6 Mbps
Advanced free maintenance software
Manageable under HP OpenView ®
Central-site high-density cardnest solution for up to 30 modems
Modular plug-in DTE interfaces for maximum flexibility and efficient stock management

SHDSL Modem – Specifications

Line Interfaces

Single or Dual pair line access
Connector: RJ45 with plug-in coverter for RJ12
Impedance: 135 ohm
Coding: TC PAM, compliant to G.991.2 (G.SHDSL)
Transmit level: 13.5 dBm
Line speed per pair: Nx 64 kbps (N=1..36, except G.703: N=3..32)
User speeds: 1 pair-model: Nx 64 kbps (N=1..36)
2 pair-model: Nx 128 kbps (N=1..36)
Handshaking: compliant G.994.1 (automatic speed negotiation) or fixed speed
Performance monitoring: compliant G.826

Front Panel Indicators

PWR : Power
142 TST : Test indicator (circuit 142)
AIS ERR : Test error indications/AIS for G.703/local alarm indications
103 TXD : Transmit Data on modular interface (input – circuit 103)
104 RXD : Receive data on modular interface (output – circuit 104)
109 DCD : Data carrier detect (circuit 109)

Possible Test Loops

Analogue loop
Remote digital loop
Local digital loop
Integrated error test generator

Local Maintenance Tools

Direct connection for VT100 local console (command line interface or interactive interface)
Direct connection for TMA (Telindus Maintenance Application)
External hand LCD terminal

Network Management Tools

TELNET : command line interface or interactive interface
TMA : Telindus Maintenance Application
TFTP configuration download
HTTP web interface
PING
SNMP : MIB2 and private MIB
Software flash download
TMA CLI : stand-alone command line console software (optional)
TMA for HP OV : management integration in HP Openview (optional)

Available Digital Interfaces

V.35
V.36/RS-449
X.21
RS-530/RS-530A
G.703/G.704
G.703 + serial (dual port)
IP Router 2M
IP Router 10M

Management Interface

Desktop versions : 9600 bps asynchronous (sub D 9-pin)
Rack-mount versions : Synchronous High speed bus (RJ45) 9600 bps asynchronous (sub D 9-pin) Insertion/extraction of management channel in G.703 time-slot 0

Mechanical Data

Desktop version: 45 x 220 x 235 mm weight: 750 g (excl interface)
Rack-mount version: 235 x 20 x 300 mm weight: 1 kg (excl interface)

Power Requirements

1 pair desktop versions: 85..265 Vac, 9W 36..72Vdc, 4W
2 pair desktop versions: 85..265 Vac, 15W 36..72Vdc, 8W
Rack-mount versions: 36..72 Vdc, 8W