Norstar Compact 616 DR5, Руководство по установке

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For example
You may need filters for three different types of users:
Managers may require unrestricted dialing.
Secretaries may need to be limited to calls on line 003 to the
West coast office only.
- Clerks may need to be limited to calling specific area codes
and the West coast office:
Dialing filters are most commonly used to prevent unauthorized
long-distance calls, without restricting local calls. Dialing filters
restrict the numbers that an internal user can
on external
lines.
a line/set filter has been defined for the line selected at the
user’s telephone, it overrides any line filters or telephone filters
which might otherwise apply.
If no line/set filters have been defined, dialed digits are filtered
through (and may be rejected by either the telephone filter (if
defined) and the line filter (if defined).
Compact System Coordinator Guide