Resetting The Ta128; Using The Embedded Protocol Analyzer - ZyXEL Communications omni TA128 User Manual

Resetting The TA128

If you have modified the TA128's setting and cannot get it back
because the unit is locking up, or you just want to reset it back to
the factory default state, the following reset procedure will help you
to reset the TA128 back to the factory default state.
Hold the DATA/VOICE button down while turning the unit ON,
keep holding down the switch for 3 seconds after the power switch
is turned ON then release the switch. TA128 will reset itself back to
the factory setting and it will also run a continuous loop-back self-
test. Printable characters will show on the terminal screen if it is
connected to one. Finally, toggle the power to the TA128 off then
back on.

Using The Embedded Protocol Analyzer

The embedded protocol analyzer (EPA) records and analyzes
various protocols on the B-channel, D-channel and DTE-DCE
interface. The EPA is designed for hobbyists as well as users with
technical backgrounds. The EPA enables you to examine messages
exchanged between your Omni TA128 and the Central Exchange
office when making an ISDN call. You can review the packets sent
or received through the B-channel (for X.75 or V.120) to or from
the remote site. AT commands issued from an application software
program can also be checked. This will help you understand their
causal relationship with other events.
In addition to its tutorial purpose, the EPA is very useful for
diagnostics. If you have compatibility problems with your Central
Exchange or with a TA at a remote site, the EPA will be your first
aid resource. According to the EPA's analysis, you may decide to
fix the problem yourself (e.g. modify the configuration and try
again) or log the analyzed results as a file (a very comprehensive
bug report), and then send it to ZyXEL's Tech Support
department.
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