Cisco 7821 Administration Manual page 132

Set Up AS-SIP
Procedure
Step 1 In Cisco Unified Communications Manager Administration, choose Device > Device Settings > SIP Profile.
Step 2 Set the Is Assured SIP Service Enabled check box.
This check box should be checked for third-party AS-SIP endpoints as well as for AS-SIP trunks to ensure
proper Assured Service behavior.
This setting provides specific Assured Service behavior that affects services such as Conference factory and
SRTP.
Step 3 Enable MLPP Authorization for a device by checking the MLPP User Authorization check box.
When the check box is enabled, the system challenges the Cisco or third-party AS-SIP phone for the user's
credentials when a precedence call is initiated from the device.
Step 4 Set the Resource Priority namespace.
An AS-SIP phone is associated with a single Resource Priority namespace.
If <None> is left as the namespace in the SIP profile then the default namespace is used.
Step 5 Choose Device > Phone.
Step 6 Set the following fields:
• MLPP Domain: Configured at the device level. The range of values is 000000 – FFFFFF. This value is
used during preemption decisions. Only calls within the same precedence domain can be preempted.
MLPP can be enabled for the device at 3 different levels: device, common configuration and the enterprise
parameter level.
• MLPP Indication: Determines whether preemption for reuse can be performed on the device. This type
of preemption is used to remove an existing call and offer a higher precedence call to the user of the
device.
• MLLP Preemption: Configured for only Cisco AS-SIP devices. For third party AS-SIP devices, the
determination about whether a call can be preempted is left to the device.
Step 7
Choose User Management > End User to configure MLPP Authorization for a user.
Cisco IP Phone 7821, 7841, and 7861 Administration Guide for Cisco Unified Communications Manager 10.0
(SIP)
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◦ Set the MLPP Indication to On to enable MLPP regardless of the enterprise or common config
settings.
◦ Set the MLPP Indication to Default to cause MLPP to be enabled for the device if it is enabled at
the common device config or enterprise parameter levels.
◦ When MLPP Indication is set to Off, MLPP is disabled for the device regardless of the common
device or enterprise parameter configuration.
◦When set to Disabled, only preemption 'not for reuse' can be performed on the device. This type
of preemption occurs when the user of the device is not the called party but is either in a call with
the called party or is using a network resource that is preempted; for example, a trunk channel or
reserved bandwidth allocation.
◦ When set to Forceful, preempt for reuse is enabled and existing calls may be preempted to offer
a higher precedence call to the user of the device.
◦ When set to Default, the setting from the common configuration or enterprise level is used.