The Cisco Unified SIP Proxy (USP) is a high-performance, highly available Session Initiation Protocol (SIP) server for centralized routing and SIP signaling normalization. By forwarding requests between call-control domains, the Cisco Unified SIP Proxy provides the means for routing sessions within enterprise and service provider networks.
Cisco Unified SIP Proxy aggregates SIP elements and enables application of highly developed routing rules. These rules enable greater control, management, and flexibility of SIP networks.
Cisco Unified Border Element scalability and load balancing
Cisco Unified SIP Proxy provides a central route point for management of multiple Cisco Unified Border Elements. You can establish logical separations and use a single Cisco Unified SIP Proxy for either or both ingress and egress traffic. You can apply load balancing and rule-based routing, and provide interfacing to the SIP trunk signal normalization where needed.
SIP trunk for contact center
Whether for inbound or outbound traffic, Cisco Unified SIP Proxy enables routing and management across contact center time-division multiplexing (TDM) and IP trunks. When the Cisco Unified Customer Voice Portal or gateway returns to service, Cisco Unified SIP Proxy resumes sending traffic to the Cisco Unified Customer Voice Portal or gateway. You can apply load balancing and rule-based routing, and provide interfacing to the SIP trunk signal normalization where needed.
Cisco Unified SIP Proxy call processingProduct Highlights
The Cisco Unified SIP Proxy is a call and dialog stateless SIP proxy. Media flows around the proxy and signaling goes through the proxy. The proxy can also modify SIP headers (normalization). Routing and normalization are determined based on administrator-configured policies. Policies are selected based on triggers, administrator configured conditions that are matched based on information in the SIP message.
- Proxy for SIP Unified Communications signaling
- Signaling support
- Address resolution
- Domain name resolution based on RFC 3263, locating SIP servers
- TCP (Transmission Control Protocol), User Datagram Protocol (UDP), and Transport Layer Security (TLS)
- Lite mode
- Minimal performance effect on the router allows for concurrent router applications