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Cisco Unified SIP Proxy simplifies call routing between Session Initiation Protocol (SIP) network elements. This highly scalable, stateless call routing engine improves network performance and makes troubleshooting easier. Cisco Unified SIP Proxy aggregates SIP-based network elements and acts as a stateless routing intermediary between them to reduce call routing combinations. Each element can route its calls or sessions to Cisco Unified SIP Proxy which will properly route the call to the appropriate SIP-based element in the network. By intelligently forwarding call routing requests between call-control elements, Cisco Unified SIP Proxy provides the means for routing sessions within enterprise and service provider networks.
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