ADTRAN 1204006L1 Manual do Utilizador descarregar pdf (Página 94)

78 FSU 5622 ESP User Manual 61200.175L1-1

Chapter 7. Configuring the Voice Interfaces

Mode

Select either DIRECT or SWITCHED mode for the voice inter-

face.

Direct Mode

Direct mode is used to accomplish a one-to-one mapping of

ports across a frame relay network. In this mode, L1 and L2 on

the local unit are connected to L1 and L2 on the remote unit.

With this option, one or two extensions can be extended across

the frame relay or DDS network by utilizing an FXO module on

the local unit and an FXS module on the remote unit. PLAR

circuits are also supported by using FXS modules on both ends

of the circuit.

Switched Mode

Switched mode is used to multiplex several remote extensions

(up to 40) to two host ports. This enables many remote users to

have access to a limited number of access lines on a call-by-call

basis. The host unit typically connects two extensions to a PBX

via an FXO module. The remote units connect to telephone sets

via FXS modules. See the chapter Applications for an example of

a switched application.

Host/Rem

Configure the unit to be either the HOST unit or a REMOTE unit.

There must be only one host unit in a switched environment.

Typically, the host unit connects to the PBX via FXO connections.

The host unit maintains all of the extension/DLCI information.

All units other than the host are set up as remote units. No other

configuration is required for remote units.

This option is available only when the MODE is set for SWITCHED.

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ADTRAN 1204006L1 Manual do Utilizador Página 94