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Multi-Level Precedence and Preemption
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Multi-Level Precedence and
Preemption
Overview
The Multi-Level Precedence and Preemption (MLPP) service functionality
allows you to place calls at varying levels of precedence; that is, you can
specify the precedence level of each call you place.
Higher precedence calls preempt those lower in precedence when a user
has no free call appearances.
You can only initiate a call with a precedence level equal to or below the
authorized precedence level that is configured for you. Any call you make
automatically defaults to Routine, unless you choose a higher
precedence. During call processing, this precedence level is used to
assure preferential call completion of higher precedence calls within the
same MLPP service domain, even if that means preempting lower
precedence calls. Once you set the precedence level for a call, the
precedence level for that call cannot be changed.
The precedence levels are:
•Routine
•Priority
• Immediate
•Flash
• Flash-Override
WARNING
Emergency 911 calls are preempted when there are no
available call appearances and there is an incoming
above-Routine precedence call.