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INGING
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A-10 HCXTD840, Issue 1, July 2001
Procedure,
continued
The first five ringing patterns are relevant for the
American telephone industry. These include:
• Line-to-line
• Trunk-to-line
• Attendant-to-line
• Intercom call
• Callback
Other ringing patterns follow if you continue to press
<R-PTN>. These ringing patterns are primarily associated
with the Japanese telephone industry.
3
Exit the test mode at any time by returning the TEST
switch to its original position.