ZyXEL Communications Omni.Net Lite User Manual

Omni.Net Lite User’s Guide

19

Chapter 1 Introduction

The TA dynamically allocates bandwidth by dialing and dropping connections according to 
traffic demand.

The TA supports PAP (Password Authentication Protocol) and CHAP (Challenge Handshake 
Authentication Protocol).  CHAP is more secure than PAP; however, PAP is readily available 
on more platforms.

Upgrade firmware using Terminal Emulation software such as Hyperterminal.

To take full advantage of the supplementary voice services available through the TA's phone 
ports, you will need to subscribe to your phone company for them. The TA supports the 
following supplementary voice features on both of its analog, or POTS (Plain Old Telephone 
Service), phone ports:

• Call Waiting
• Three Way Calling 
• Call Transfer
• Call Forwarding

The TA supports the DSS-1 switch type.

The TA comes with an S/T interface that connects to an NT-1 (Network Termination 1) device 
(supplied by the phone company in Europe). 

In the following figure:

• All devices that are designed for ISDN are designated Terminal Equipment 1 (TE1).
• All other communication devices that are not ISDN capable, but have a POTS telephone 

interface (also called the R interface), including ordinary analog telephones, FAX 
machines, and modems, are designated Terminal Equipment 2 (TE2). 

• The Terminal Adapter (TA) connects a TE2 device to an ISDN S/T bus.