ERICSSON IDSL MODEM - INSTALLATION GUIDE

GENERAL

INSTALLATION
   MODEM
   PC & SOFTWARE

FAULT FINDING

CONNECTORS & CABLES


MULTIPLE PHONE SOCKETS  -  MODEM REMOTE FROM MASTER SOCKET OR ENTRY POINT

Caution

Unless you have experience in telephony and data cabling, it is strongly recommended that you enlist expert help with this installation.

Because of the many possible configurations, detailed instructions cannot be given.

Modem Remote from Entry Point or Master Socket

If the required modem location is remote from the entry point of the customer’s telephone line and the master socket, new cable will have to be run.

The existing premises wiring should be broken either at the DSL entry point, master socket, or at a convenient point between, and a two twisted-pair cable run to a position adjacent to the proposed modem. This will extend both the DSL and the Phone equipment lines to the modem location. In some cases, new cable may not be needed, if the original house wiring passes close to the modem location and has enough spare twisted pairs.

A wall socket should be fitted at the modem location, and connection made with the supplied cable, as previously explained.

Use of Customer Phone Wiring for DSL

When using part of the customer’s original telephone wiring as the DSL feed to the modem, care should be taken to ensure that the cables used are "twisted pairs" which have good immunity to electrical interference.

If third wire ringing was used for multiple phones, this must be removed, from the section of wiring used for the DSL, to prevent interference pick up.

Phone Wiring

The phone output of the IDSL MODEM can usually be connected to the existing customer premises phone wiring, without further modification.

Caution: External wiring, which might be subject to high voltage surges must not be connected to the IDSL MODEM Phone port.

Modem Connections

All connections to the IDSL MODEM are made via sockets on the back panel.

  • Connect the RJ-45 (DSL / Telephony combined port) to the wall mounted (country specific) socket using the cable provided.
  • Connect the female DB9 connector (RS-232 interface, V.24 data port) to the serial port (COM port) of the PC, using the supplied cable.
  • Connect a desk phone to the RJ-11 socket, if required.
  • Connect the low voltage dc output of the mains adapter to the 2.5mm power socket (centre positive).

MODEM CONNECTION SCHEMATIC

Maintenance of Telephone Service During Installation

If the modem is installed prior to the LT (its companion exchange equipment) but not powered up, metallic bypass circuits will preserve the connection from the telephone to the incoming line.

Interruption of Telephone Service

As a result of modifications to the house wiring, telephone service will only be available when the Modem is connected to the Master Socket.

Multiple Telephones

Multiple telephones may be included in the Phone circuit, but cordless phones should be at least 3m from the modem.
As with conventional copper circuits, transmission performance may be impaired if more than one telephone is off-hook at the same time.

Earthing (Grounding)

The IDSL MODEM is designed to operate without a local earth connection.

Do not earth the IDSL MODEM.

Mains Power

The modem must be powered from the local mains, using the supplied plug-pack adapter. The mains outlet should not be shared by other equipment, which might generate mains-born RF interference. This would include such equipment as TV sets, microwave ovens, Ham Radio transceivers etc.

Market Specific Power Adapter

Check that the power adapter supplied with the IDSL MODEM is correctly rated for the voltage and frequency of the local mains supply.

Use of a non-approved power supply will negate the equipment warranty.

top