ISDN High Speed Internet Access

High Speed Internet Access
ADSL / ISDN / Frame Relay / Leased Lines / Private Line

ISDN 128K LAN Internet Access

ISDN comes in two flavors, Basic Rate Interface (BRI) and Primary Rate Interface (PRI).

Basic Rate Interface (BRI)	Primary Rate Interface (PRI)

» One physical connection to the ISDN network » Two logical connections » Used at remote telecommuter site	» One physical connection to the ISDN network » 23 logical connections (U.S./Canada) » 30 logical connections (Europe) » Used at central site

BRI provides two “B” or bearer channels of 64 Kbps each and one additional signaling channel called the “D” or delta channel. While it requires only one physical connection, ISDN provides two channels that remote telecommuters use to connect to the company network.

PRI provides up to 23 bearer channels of 64 Kbps each and one D channel for signaling. That’s 23 channels but with only one physical connection, which makes it an elegant solution-there’s no wiring mess (PRI service typically provides 30 bearer channels outside the U.S. and Canada). You’ll want to use PRI at your central site if you plan to have many ISDN dial-in clients.

BellSouth's ISDN 128K LAN Dedicated Internet Access service includes unlimited access to BellSouth's ISDN ports in the BellSouth Managed Facility (BMF).

This service lets organizations access the Internet across their organization's LAN at transfer speeds up to 128 Kbps. High-speed connections to the Internet means no dial-in delays or frustrating busy signals.

Companies with 10-50 PC users, a small LAN, and users (each user) averaging 10-20 hours per week Internet usage would be candidates for this service. This service utilizes the Multi-Link PPP (MPPP) protocol allowing for the ability to bond two B-channels to achieve connection speeds up to 128 Kbps.

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