Matrix Vision System Manual page 21

Matrix
Important Point:
• The extensions having access to trunk and higher Toll control will only be able to make External Calls.
Answering Calls
When a call is placed to your extension ,if the caller is an internal caller then your extension rings as
Trin....Trin...............Trin.....Trin............... This is called double ring. If the caller is an external caller, the
extension on which the trunk call lands rings as Trin................ Trin.................... This is single ring. These two
types of rings differentiate an internal caller from an external caller.
Programming the System
Many a times it happens that the default settings do not meet our requirements and there is need to program
the system. Programming is possible only from System Engineer/System Administrator mode. For more details
Please refer 'Programming the System'.
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Vision System Manual