Multi-Tech Systems FR2201 manual Data Port Configuration

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MultiFRAD II User Guide

Data Port Configuration

This dialog box lets you leave both data ports enabled for normal data transfer operations or disable a given port if you do not want to transmit or receive data over it. The Destination Port parameter will be active only if both data ports have been mapped to the same DLCI.

For point-to-point operation, only APSM mode will be enabled. For frame relay operation, APSM mode allows both data ports and any protocol stacks to be mapped to a single DLCI. Encapsulated mode allows data from only one port with any other protocol mapping through a given DLCI. Raw mode allows the data of only one port to be transmitted, and the other port will not be able to transfer data on that DLCI.

For an asynchronous device, select Configure Asynchronous and configure the MultiFRAD to match your device. For a synchronous device, select Configure Synchronous, then configure the MultiFRAD to match your synchronous device. The Data Port Configuration dialog box also enables you to configure both data channels independently.

For example, Port 1 could be connected to a Multi-Tech MultiMux MMH904 and configured with the following options:

´Data Port Mode set to APSM (Advanced Priority Statistical Multiplexer),

´Synchronous Configuration,

´Internal Clocking with Speed set to 19200,

´Encoding Scheme set to NRZ for all Multi-Tech Muxes,

´Between Frames set to Send Flags, and

´InterFrame Timer (in ms) has to be Off.

The MMH904 would have to be configured for an external composite link device. This means that the 8-position DIP Switch on the MMH904 would have to be toggled to the closed position and an external composite link cable connected between the MMH904 and the MultiFRAD Channel 1 connector.

In most applications, the encoding scheme, interframe timer, and between frames will be used at their default settings. If you are unsure of your device’s configuration, start with the defaults or refer to your device’s documentation.

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