Border Agent
The Clarent® Border Agent works in partnership with the Clarent® Class 5 Manager (C5CM) to transport media streams to ingress and egress edge devices that either reside within a private IP space, or are configured for topology hiding. IP addresses and ports associated with the media streams are modified appropriately by Border Agent so that firewalls are properly traversed and the media streams are routed to the appropriate destinations.
The Clarent® Class 5 Manager (C5CM) performs MGCP, SIP and H.323 protocol handling and IP address management within the VoIP protocols, and assigns media traffic to the Border Agent.
⁃ NAT Traversal
⁃ Network Topology Hiding
⁃ Supported Services
⁃ Network Configurations
⁃ Public Softswitch Connection to Private Edge Devices
⁃ Private Softswitch Connection to Private Edge Devices
⁃ Topology Hiding Between Public Edge Devices
The Clarent® Border Agent enables MGCP and SIP endpoints and H.323 and SIP gateways to utilize private IP addresses in the Clarent® network. It also hides the identification of remote edge devices within your network when facilitating the exchange of traffic between carriers. Clarent® Border Agent supports the use of all media types (voice, DTMF, fax, and modem) supported by the C5CM.
Supported NAT Topologies
• Public Softswitch to Private Endpoint
• Private Softswitch to Private Endpoint with Softswitch and Border Agent assigned different public IP addresses
• Private Softswitch to Private Endpoint with Softswitch and Border Agent associated with single public IP address
• Private Softswitch does not work in Connect environments
• Enhancement to peer-to-peer protocol handling needed
• Private Softswitch does not include CGW