Enterasys Networks CSX7000, CSX5500, CSX6000 manual Default Async Protocol, PPP Mode Using Cfgedit

USER’S GUIDE

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 cs, mc 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.

PPPMODE

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).

USING MANAGE MODE

termopt

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

392 CyberSWITCH