Specifications

205
Maintenance
The Silence Deletion feature operates according to three characteristics that can be
described as attack, decay, and audio level. The attack is how quickly the Voice Card will
respond to a new sound after there has been silence. This period needs to be short enough
so that speech is not clipped at the leading edges of syllables, yet long enough that random
noise spikes are ignored. The value is fixed at 4.5 milliseconds. The audio level is simply
the threshold for determining what is noise and what is silence. It also is a pre-set value on
the card. The decay or speed is a rate that determines how long the recording continues
after the last sound. The Silence Deletion mode can be enabled at any one of three
different speeds. The three settings can be experimented with during installation to suit
personal taste.
For more information on setting these two parameters see Commands Found in
OPTIONS.CUS on page 260.
Lights
The front LEDs serve several purposes. As mentioned, they show when the card is reset
and that the software is functioning normally. In the Silence Deletion mode, they show
channel recording activity. In addition, with the Silence Deletion disabled, they can
display selected information showing general operation or helpful diagnostics.
Maintenance
Voice File Restore and Backup
For 2000 Series paging terminals shipped after the summer 1992, we have included a
backup set of voice files on the system. This lets you restore one or all of the system voice
prompts if you accidentally record over them. It also lets you save and restore any system
voice prompts you have recorded yourself.
The instructions here will also assist you in saving the prompts to your PC if desired, and
working with individual prompt or custom prompt files.
If you have trouble, Zetron Support Engineers will assist you with these operations. The
following details are somewhat technical and assume you are familiar with DOS and our
ZlinkW commands.
On the DOS part of the hard disk in the paging terminal, there are two directories
established for backing up voice files:
C:\ZVOICE This is the holding area for the original system voice prompts. Zetron
writes default files here during production.
C:\VOICE This is the holding area for any customer re-recorded system voice
prompts. It is initially empty.