ZyXEL Communications Prestige 128 user manual ISDN Basic Rate Interface BRI, Standard Phone Jack

ISDN Basic Rate Interface (BRI)

Using either a standard S/T or U Interface (128 uses the S/T interface and 128U uses the U interface) the Prestige supports a full range of switch types. The switch type depends on the CO (Central Office) switch your ISDN line is connected to. See Chapter 16 for more information on North American, European, and Asian ISDN firmware and switch types supported by the Prestige.

The two B-channels can be used independently for two destinations. Or they can be bundled for one connection to support bandwidth-on-demand.

Multiple Networking Protocol Support

The Prestige is a multi-protocol router. It supports TCP/IP, Novell IPX, and Transparent Bridging.

Standard Phone Jack

The Prestige is equipped with two standard phone jacks to connect to telephones, FAX machines, or modems. This allows the ISDN line to be used for voice calls as well as data calls.

Dial On Demand

The Dial On Demand feature allows the Prestige to automatically place a call to a Remote Node whenever there is traffic coming from any workstation on the LAN to that remote site.

Bandwidth On Demand

The Prestige supports bandwidth up to 128Kbps over a single ISDN BRI line. It incorporates PPP/MP (Point-to-Point Protocol/Multilink Protocol) to bundle two B channels over a BRI line. In addition, the Prestige dynamically allocates bandwidth between the two B channels, increasing or decreasing speeds as

2 Introduction