Enterasys Networks CSX7000 Manuel d'utilisateur télécharger pdf (Page 392)

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101

USER’S GUIDE

392 CyberSWITCH

RELATIONSHIPS BETWEEN DIGITAL MODEM AND OTHER FEATURES

Note the following:

• RADIUS Authentication: Authentication is performed before the call is routed to the Digital

Modem Adapter. Once the call is validated, the call is routed to the Digital Modem Adapter to

establish a modem link.

• Throughput Monitoring: Overload and Underload conditions do not apply, since the Digital

Modem feature only uses one B-channel per call. However, the Idle condition (in which the sys-

tem releases an idle call after a certain length of time) is still valid. Since this condition may not

be as important to analog calls as it would be to ISDN calls, you may want to set this threshold

higher than the default. You may do so using the Manage Mode command:

thruput

change.

• Concerning the

and

cdr

commands: the data rate displayed for Digital Modem calls

will be the actual transmit rate from the CyberSWITCH’s perspective. If no rate is reported by

the modem, then the value will default to 64K.

DEFAULT ASYNC PROTOCOL

The default async protocol option applies to digital modem applications only. It allows you to

specify default values for the CyberSWITCH when handling incoming asynchronous calls. The

configurable options include:

• PPP Mode: for standard async-PPP data transfer. This mode assures that the digital modem

connects the caller to a PPP stack, performs an async-PPP-to-sync-PPP conversion, and then

sends the data to the LAN as appropriate.

• Terminal Mode: provides a means for user-level authentication before PPP data transfer, or pro-

vides remote analog console access for system management.

• Call Disconnect: automatically disconnects call if no data received within the configured data

time-out duration.

When an incoming connection is established to the CyberSWITCH, system software “autosenses”

the type of connection. It looks at the first few bytes of received data and determines whether the

connection is terminal mode or PPP mode. If no data is received within a configurable amount of

time, the system takes action based on the configured default parameter. A description of the

configuration of this default parameter follows.

PPP MODE

USING CFGEDIT

To set the default to PPP mode:

1. From Options, select Default Async Protocol.

2. Select Action on Data Timeout.

3. Select Use PPP Protocol.

4. Next, select Data Timeout Value. Change value, in seconds as desired (minimum: 1; maximum:

60).

SING MANAGE MODE

termopt

Allows you to change the default async protocol configuration as if you were in the CFGEDIT

screen.

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Enterasys Networks CSX7000 Manuel d'utilisateur Page 392

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