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Specifications
50003510 Revision A 217
System Parameters
The sale and installation of any communications equipment is subject to various local and
national regulations covering a number of parameters including electrical characteristics, tone
plans, and loss and level plans. In addition, the traffic capacity of the system must be considered
- will the system handle the expected traffic at cut over and can it be expanded to cover expected
growth in the future?
This section of the guide lists many of these system parameters that can be used for preliminary
planning. For additional SX-200 EL/ML planning information, refer to Engineering Information
on the SX-200 EL/ML Technical Documentation CD-ROM.
Tone Plan Support
The SX-200 system supports tone plans for the following countries:
• North America
•Mexico
• Hong Kong/Taiwan
• Malaysia.
Traffic and Performance
Traffic Parameters
Traffic engineering is a statistical method used to ensure that you have provisioned your system
to give the level of service to which your users are accustomed. Understanding these traffic
engineering concepts is important when purchasing or configuring your system.
Early analog PBXs usually had a large number of voice ports contending for a low number of
speech paths. Once all the speech paths were in use, anyone trying to place a new call was
forced to wait for the next free path. To reduce the chance of being unable to complete a call,
Maximum Number of Sub-attendants
25
Maximum Number of LDN Appearances
16
Maximum Number of Line Appearances
32
Maximum Number of Physical Ports
SX-200 EL
SX-200 ML
672
192
Feature Capacities (continued)
Feature
SX-200 EL/ML
Limitations
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