The Cisco Unified Border Element SP Edition is a high-scale, carrier-grade session border controller (SBC) that is integrated into Cisco routing platforms; it can be integrated with many router functions to provide a very feature-rich and intelligent SBC application. Cisco Unified Border Element SP Edition provides a network-to-network demarcation interface for signaling interworking, media interworking, address and port translations, billing, security, quality of service (QoS), Call Admission Control (CAC), and bandwidth management.
Cisco Unified Border Element SP Edition allows service providers and large enterprises to connect isolated voice, video, and unified communications networks directly over IP-IP interconnections, avoiding public switched telephone networks (PSTNs). End-to-end IP enables services such as Session Initiation Protocol (SIP) trunking, service provider voice-over-IP (VoIP) peering, residential triple play (data, voice, and video), and business-to-business Cisco TelePresence conferencing. It also provides new revenue opportunities, enhances quality, increases scalability, lowers costs, and reduces network complexities.
Cisco Unified Border Element SP Edition is a critical element of the Cisco Service Exchange Framework (SEF) for service provider next-generation networks and large enterprise unified communications networks. Cisco Unified Border Element SP Edition on the Cisco ASR 1000 series aggregation services routers builds on the continuous operation and service aggregation that these powerful and flexible routers provide.
Signaling interworking (network interoperability)
ASR 1000 Cisco Unified Border Element SP Edition Unified model operates in back-to-back user agent mode, and that means that incoming call signaling gets terminated and reoriginated on terminating side. That way topology hiding functionality is achieved by separating incoming and outgoing sessions. On media side, ASR 1000 Cisco Unified Border Element SP Edition modifies just the headers and apply policies while forwarding RTP payload without modification.
On media interworking side, as mentioned before, ASR 1000 Cisco Unified Border Element SP Edition just modifies the header information to protect the IP addresses of the different domain and apply policies. The actual media is forwarded without any modifications. ASR 1000 Cisco Unified Border Element SP Edition supports RTP/RTCP traffic and pass-through of encrypted SRTP traffic. It also supports various types of voice and video codecs.
One of the important functions of Cisco Unified Border Element SP Edition is to enable the access to the SIP devices across NAT and FW devices. Firewall with ALG functionality is able to open signaling and media stream for SIP calls, but it has difficulties in media allowing for incoming calls. The SBC performs translation of IP addresses and port numbers (through Network Address and Port Translation, or NAPT) in both directions.
Another important function of Cisco Unified Border Element SP Edition Unified model is able to generate reliable call detail records for billing purposes. ASR 1000 Cisco Unified Border Element SP Edition Unified model implementation supports PacketCable 1.5 Event Messages Specification compliant billing methods. ASR 1004 and ASR 1006 platforms also support storing of the billing records on the local hard disk if the billing server is not reachable.
Call admission control/quality of serviceProduct Highlights
ASR 1000 Cisco Unified Border Element SP Edition supports different CAC methods to control sessions. It is in a unique position in the network to control the end-user communication and enforce defined service level agreements (SLA). Cisco Unified Border Element SP Edition can monitor the active calls and bandwidths used per call. It can also police the media flowing through a call and reject the packets if the limits are exceeded. It can monitor and remark the signaling and media packets with different DSCP and TOS marking. This helps ensure that user data will be prioritized compared to other types of traffic. This way Cisco Unified Border Element SP Edition helps in providing stable and quality service as defined by SLAs.
- Capital expenditures and operating expenses savings by eliminating overlay networks and additional interfaces on routers
- Environmental benefits with lower power and cooling requirements
- Scalable video and Cisco TelePresence support; allows business-to-business Cisco TelePresence support
- Redundancy with Stateful Switchover and Nonstop Forwarding
- Standalone or integrated in the networking infrastructure
- IMS or non-IMS deployments