In Cisco Unified Communications Manager Administration, use the menu path to configure Resource Priority Namespace Network Domains.
Cisco Unified Communications Manager uses Resource Priority Namespace Network Domains to support Voice over Secured IP (VoSIP) networks by using Multilevel Precedence and Preemption (MLPP) for Session Initiation Protocol (SIP) trunks.
MLPP, with configured Resource Priority domains, prioritizes SIP–signaled resources and enables indications related to precedence and preempted calls. End users can establish secure calls when the calls traverse SIP trunks.
There are five registered namespaces for resource priority:
- dsn—Defense Switched Network
- drsn—Defense Red Switched Network
- q735—Commercial equivalent of the DSN
- ets—Emergency Telephone Service
- wps—Wireless Priority Service
Cisco Unified Communications Manager accepts “Q735” and “q735” as the same value. It transmits “q735’ when signaling an MLPP call on the SIP trunk.