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MERLIN LEGEND Communications System Release 6.0
System Manager’s Guide
555-660-118
Issue 1
February 1998
Putting the System to Work
Page 5-22Optimizing Your System
5
SECURITYlALERT:
!
The MERLIN LEGEND Communications System ships with ARS activated
and all extensions set to Facility Restriction Level 3, allowing all
international calling. To prevent toll fraud, ARS Facility Restriction Levels
(FRLs) should be established using:
■
FRL 0 for restriction to inside calls only
■
FRL 2 for restriction to local calls only
■
FRL 3 for restriction to domestic long distance (excluding area code
809 for the Dominican Republic as this is part of the North American
Numbering Plan, unless 809 is required)
■
FRL 4 for international calling
Each extension should be assigned the appropriate FRL to match its calling
requirement. All voice mail port extensions not used for outcalling should be
assigned to FRL 0.
Optimizing Your System 5
This section describes some features and applications that you read about in the
scenarios. They are highlighted here because they can significantly enhance your
system.
For more information about any of these products and features, see the
Feature
Reference
or contact your Lucent Technologies representative for additional
guides or applications notes.
NOTE:
The
Data/Video Reference
includes additional information about
videoconferencing, Internet access, and other data communications
support.
Desktop Videoconferencing 5
A desktop videoconferencing application is designed for individual video calls,
data transfer, and screen-sharing between two compatible personal computers
that are running compatible software.
Some desktop videoconferencing systems can use either one MLX B-channel or
two, although one is often not of adequate quality (other desktop video systems
support only 2B data). The use of one B-channel is called
1B data
; the use of two
data channels is referred to as
2B data
. Depending upon the type of high-speed
digital facilities and interface arrangement connected to your system, 1B data
transfer takes place at 56 or 64 kbps, and 2B data transfer takes place at 112 or