Multilevel Precedence And Preemption - Cisco 7800 Series Administration Manual

Cisco IP Phone Administration
• Transport Layer Security (TLS) and Secure Real-time Transport Protocol (SRTP)
• Internet Protocol version 6 (IPv6)
AS-SIP is often used with Multilevel Precedence and Preemption (MLPP) to prioritize calls during an
emergency. With MLPP, you assign a priority level to your outgoing calls, from level 1 (low) to level 5 (high).
When you receive a call, a precedence level icon displays on the phone that shows the call priority.
To configure AS-SIP, complete the following tasks on Cisco Unified Communications Manager:
• Configure a Digest User—Configure the end user to use digest authentication for SIP requests.
• Configure SIP Phone Secure Port—Cisco Unified Communications Manager uses this port to listen to
• Restart Services—After configuring the secure port, restart the Cisco Unified Communications Manager
• Configure Phone Security Profile for AS-SIP—You can use the phone security profile to assign security
• Configure AS-SIP Endpoint—Configure a Cisco IP Phone or a third-party endpoint with AS-SIP support.
• Associate Device with End Use—Associate the endpoint with a user.
• Configure SIP Trunk Security Profile for AS-SIP—You can use the sip trunk security profile to assign
• Configure SIP Trunk for AS-SIP—Configure a SIP trunk with AS-SIP support.
• Configure AS-SIP Features—Configure additional AS-SIP features such as MLPP, TLS, V.150, and
For detailed information about configuring AS-SIP, see the "Configure AS-SIP Endpoints" chapter, System
Configuration Guide for Cisco Unified Communications Manager.

Multilevel Precedence and Preemption

Multilevel Precedence and Preemption (MLPP) allows you to prioritize calls during emergencies or other
crisis situations. You assign a priority to your outgoing calls that range from 1 to 5. Incoming calls display
an icon that shows the call priority. Authenticated users can preempt calls either to targeted stations or through
fully subscribed TDM trunks.
This capability assures high-ranking personnel of communication to critical organizations and personnel.
MLPP is often used with Assured Services SIP(AS-SIP). For detailed information about configuring MLPP,
see the "Configure Multilevel Precedence and Preemption" chapter, System Configuration Guide for Cisco
Unified Communications Manager.
SIP phones for SIP line registrations over TLS.
and Cisco CTL Provider services. Configure SIP Profile for AS-SIP-Configure a SIP profile with SIP
settings for your AS-SIP endpoints and for your SIP trunks. The phone-specific parameters are not
downloaded to a third-party AS-SIP phone. They are used only by Cisco Unified Manager. Third-party
phones must locally configure the same settings.
settings such as TLS, SRTP, and digest authentication.
security features such as TLS or digest authentication to a SIP trunk.
IPv6.
Cisco IP Phone 7800 Series Administration Guide for Cisco Unified Communications Manager
Multilevel Precedence and Preemption
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