XLR Standards Based G.SHDSL Modem Range

XLR 4600 – G.SHDSL Broadband

The Case Communications eXtreme Line Rate (XLR) range of broadband products use G.SHDSL technology to provide extended E1, LAN and data services at 2.304 Mbps over one copper pair, or 4.608 Mbps over two copper pairs per unit.

XLR front panel

XLR rear panel

XLR 4600 Application Example

• 2 x Standard Copper pairs providing 4.6 Mbps, and providing concurrent transmission of three services, LAN, Voice and a third party device sucha s a router on the serial port
• LAN to LAN at using the XLR 4600 Internal Bridge
• PBX to PBX up to 30 calls via E1 or any other framed service for eg. CCTV
• Router to Router to 4.6 Mbps via serial port

General Description

When operating at full rate over one copper pair of wires 36 x 64Kbps timeslots are available, and when operating over 2 copper pairs up to 72 timeslots are available. The Internal 'Bonder' allows the circuits to re-align the timeslots at each end. These timeslots are mapped between three physical services on the XLR, a Bridge, E1 port and Serial Port

When used with the Case Communications IS routers, the Xlr's can be bonded to provide multiple high speed links between Routers. For example when 2 XLRs are used with the routers a link speed of 9.2 Mbps can be achieved, with 4 XLRs a link speed of 18.4 Mbps can be achieved between the routers etc.

Key Features of the Case Communications XLR are:

• Up to 36 x 64Kbps (2.304 Mbps) over one copper pair
• Up to 72 x 64Kbps (4.608 Mbps) over two copper pairs
• Support for N x 64Kbps via an internal Time Division Multiplexer
• LAN-to-LAN connectivity via Internal Filter Bridge
• E1 port for framed data (G703 / 704) or unframed data transport
• X.21 V.11 serial port for attachment of third party devices
• ITU G.922.2 (G.SHDSL) compliant
• Long range over unshielded twisted pairs
• High speed symmetrical data services
• Managed via simple easy to use menu system
• Local Management Port
• Remote Management via Telnet Session
• Up and download of configurations to/from PC
  

E1 Interface

The E1 Interface can be either framed or unframed. For unframed signals the whole stream can be transported, occupying a full 32 x 64Kbps channels.

The E1 Interface has the following features:

• Physical interface G.703 / 704 balanced 120 Ohm, Rj 45 connector
• Framed 2 Mbps interface for carrying PBX voice traffic (selectable channels)
• Unframed 2 Mbps interface for carrying unusual traffic
• Framed 2 Mbps interface for Kilo-Stream aggregate channels (selectable)

Serial Interface

The Xlr serial interface can be either N x 64Kbps channels up to the full line rate or sub rate 64Kbps rates, via the internal sub rate multiplexer.The physical interface is provided on a 15 way X.21 V.11 Female 15 way 'D' type socket.

Ethernet Interface

The built in Ethernet Interface performs Bridging functions to the remote site. It is designed to provide basic destination filtering, and will not pass frames addresses to a local MAC address, across the link. The list of local addresses is determined by examining the local source addresses of the Ethernet Frames.In hub networks it is envisaged that the Xlr will connect to an ethernet switch allowing the extension of the central sites LAN facilities.

Management Interface

A local and remote Xlr management interface is presented on an RS 232 9 Way Female 'D' Type interface. The XLR may also be managed via the LAN and Telnet.

The Xlr Man Machine Interface is an easy to use menu system with all commonly used configuration options and status presented to the user.

The XLR configurations may be uploaded to PC and stored or edited before being sent back to an XLR.The files are stored as simple text files.

Control

The Xlr has one factory default configuration and up to four user defined configurations. The unit can be restarted using any of these saved configurations.

Monitoring

Full XLR status can be viewed from the management interface, allowing a network manager to view the current status of the copper circuit, or any of the three XLR services.

Status LEDs

The Xlr provides easily recognisable status via a range of LED's. The following status LED's are provided.

Power
Indicates the unit is powered on.

Ethernet
Single colour LED to indicate Ethernet link connectivity
Bi-colour LED to indicate Rx traffic
Bi colour LED to indicate Tx traffic

Serial Port
One bi-colour LED for Rx traffic
One bi-colour LED for Tx traffic

E1 Port
Bi-colour LED to indicate Rx traffic and link Alarms
One bi-colour LED to indicate Tx traffic

Xlr Diagnostic Options

Local Digital loopback
Local G.SHDSL loopback
Remote G.SHDSL loopback
Remote Digital loopback

Approximate Range of the Xlr's depend on the quality of the copper circuit. The ranges below assume good quality on noise free circuits. For single pair copper circuits halve the data rate.

View data sheet for Case Communications XLR 4600

View application examples for Case Communications XLR 4600

For additional information please contact Marketing.