Multi-Level Precedence and Preemption
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Multi-Level Precedence and Preemption allows an authorized user the ability to specify a precedence level when making a call and preempt any existing calls that have a lower precedence level. Preemption allows important calls the ability to take precedence over less important calls. Precedence determines the level of importance of a call and makes the decision as to whether the call can be preempted or not. MLPP is supported between the ISDN protocol and the SIP protocol (ISDN to SIP, SIP to ISDN). Below is a table displaying the supported Precedence levels.
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