ZETRON 748, Техническое руководство

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Feature Set Reference
158 025-9368H
Rings Before Answer
The Model 748 knows of an incoming call by detecting the ringing voltage on its End-to-End lines.
The on / off cadence of the ringing voltage is used to count the incoming rings. Once the number of
rings has exceeded the specified
Rings before answer , the Model 748 will take action on the ringing
line. This can be either to answer the ringing telephone line and allow overdial or key the transmitter
and call a pre-determined user (radio).
The Model 748 counts rings on the leading edge of a ringing impulse. The default number of Rings
before answer is 2. This will cause it to answer on the leading edge of the second ringing impulse
after a valid pause between ring impulses. Minimum pause between ring impulses is 1.5 seconds.
How to program it:
Access the Model 748 through your direct connected PC or terminal, or remotely from your PC
connected to a modem via the Model 748's internal modem.
Once connected to the Model 748 and the Main Menu is on the screen, type “1” and press ENTER ,
the Interconnect Menu will be displayed. Select the item number for Rings before answer . The
current setting for Rings before answer will appear along with a message instructing you to enter the
new value and the range of values you may enter. Enter the new value and press
ENTER
when you
have finished.
The default for Rings before answer is two. The line may be programmed for two to nine rings.