/mcpPurpose Command or Action Configure namespace domains for a Voice over Secured IP (VoSIP) network that uses SIP Configure a Resource Priority Namespace Network Domain, on page 828 Step 2 trunks. Your system prioritizes the SIP-signaled resources so that those resources can be used most effectively during emergencies and congestion of telephone circuits, IP bandwidth, and gateways. Endpoints receive the precedence and preemption information. Configure a list of acceptable network domains. Incoming calls are compared to the list and Configure a Resource Priority Namespace Network Domain List, on page 829 Step 3 processed, if an acceptable network domain is in the list. Configure a Multilevel Precedence and Preemption Domain Associate devices and resources with an MLPP subscriber. When an MLPP subscriber that belongs to a particular domain places a precedence call to another MLPP subscriber that belongs to the same domain, the MLPP service can preempt the existing call that the called MLPP subscriber is on for a higher precedence call. MLPP service availability does not span across different domains. The MLPP domain subscription of the originating user determines the domain of the call and its connections. Only higher precedence calls in one domain can preempt connections that calls in the same domain are using. Procedure Step 1 From Cisco Unified CM Administration, choose System > MLPP > Domain > MLPP Domain. Step 2 Click Add New. Step 3 In the Domain Name field, enter the name that you want to assign to the new MLPP domain. You can enter up to 50 alphanumeric characters, and any combination of spaces, periods (.), hyphens (-), and underscore characters (_). Step 4 In the Domain ID field, enter a unique six-character hexadecimal MLPP domain ID. Domain IDs must fall in the range between 000001 and FFFFFF. (000000 is reserved for the default MLPP domain ID.) Step 5 Click Save. Configure a Resource Priority Namespace Network Domain Configure namespace domains for a Voice over Secured IP (VoSIP) network that uses SIP trunks. Your system prioritizes the SIP-signaled resources so that those resources can be used most effectively during emergencies and congestion of telephone circuits, IP bandwidth, and gateways. Endpoints receive the precedence and preemption information. Feature Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs 828 QoS Management Configure a Multilevel Precedence and Preemption Domain