Perle 833IS, Руководство пользователя

Страница: 17 / 340

Perle 833IS User Guide 1
Introduction
The Perle 833IS...Reliability and Flexibility
About the Features of the 833IS
Dial- In Access
The 833IS lets Remote Users access the LAN (Local Area Network) via the
telephone network as if they are directly attached to it. Remote Users can then access
file servers, Email, Mainframes, application servers, or any other server on your
LAN. It can be teamed with a remote control package such as PC Anywhere or
Carbon Copy to allow a user to use a locally attached PC remotely. It can even act as
a Dial-In gateway to another network, such as the Internet.
Dial- Out Access
With Perle Dial-Out Client software, LAN attached PCs can use the PerleDSP
Modem and lines as Dial-Out modems. To the PC application, the PerleDSP Modem
and line attached to the 833IS look like a modem connected to the PC COM port.
Most PC applications that require a modem are supported. With appropriate
software, users can connect to a BBS, Internet provider, or any other service
accessible by the telephone network. When used with Fax software such as WinFax
Pro, users can send faxes from their PC.
BRI Support Calls are brought into the 833IS by an Integrated Services Digital Network (ISDN),
Basic Rate Interface (BRI) line. Using digital technology provides for a higher
reliability and the ability to transfer data at rates of up to 64kbps per channel. ISDN
also greatly increases the speed at which calls can be established and torn down. The
unit can support as many as 8 ISDN, BRI lines. Each BRI line can support up to 2
simultaneous phone calls allowing for a total of 16 simultaneous sessions. ISDN
provides for remote access from conventional modems, ISDN BRI cards or
Terminal Adapters.
There are two basic types of BRI interfaces available today. The “U” interface is a 2
wire interface which connects a Network Termination (NT) device to the central
office (CO). This is common in North America where the customer supplies the NT