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Switched Digital Video

Cable and Cisco: Working Together

Learn about the history of cable and Cisco, and the next step: Cisco Videoscape. (2:52 min)

Cable and Cisco: Working Together

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Enhance Video Delivery and Bandwidth Efficiency
Offer a wider variety of programming while efficiently increasing hybrid fiber-coaxial (HFC) network bandwidth with Cisco Switched Digital Video (SDV) solutions. Cisco SDV uses oversubscription to deploy incremental SD and HD long-tail content, which is the fastest way for you to provide new content and services.

Offer New Services
Unlike traditional broadcast TV, where all channels are continuously transmitted, SDV lets you transmit only the channels being watched in a given neighborhood. SDV works with existing MPEG-2 set-tops, protecting your equipment investment. With Cisco SDV solutions, you can:

  • Deliver new SDV services without any change to the viewer experience from traditional linear video
  • Offer more content and advanced services to subscribers, including advanced advertising
  • Improve visibility into subscriber behavior
  • Measure viewership habits to help plan for SDV deployment and targeted advertising

You can also establish a next-generation switched network architecture to help you:

  • Reclaim bandwidth spectrum while continuing to meet service demands
  • Help transition from MPEG-2 to MPEG-4 content
  • Gain critical insight into operational aspects of the SDV system
  • Implement quadrature amplitude modulation (QAM) sharing to yield efficiency gains between video-on-demand (VoD) and SDV sessions

Cisco SDV Architecture
Cisco was the first to deliver an open SDV system, opening up protocols to help enable multivendor deployments while providing platform scalability and flexibility. We provide every element of an SDV solution, based on an open architecture for distinctive flexibility and competitive advantage.

Cisco Switched Digital Video Architecture Diagram - Click to Enlarge
Cisco Switched Digital Video Architecture
Click to enlarge image

The Cisco SDV client can be integrated into existing electronic program guides. A Master Universal Session and Resource Manager (USRM) controls and arbitrates bandwidth for multiple applications, allocating bandwidth between the SDV and existing VoD services.

Edge QAM
Cisco edge QAM (EQAM) devices support IP multicast through Internet Group Management Protocol (IGMP) Version 3 and interoperability with standard IP switches and routers.

SDV at the Headend
At the headend, a Cisco Digital Content Manager (DCM) grooms and processes SDV streams and can perform advertisement insertion, rate shaping, transcoding, and other features. The Cisco Netcrypt Bulk Encryptor allows for independent scaling of encryption and EQAM resources.

Cisco SDV operational support applications include:

  • Capacity Planning
  • Status and Operations
  • SDV Marketing (Viewership)
  • Pointer Network Monitoring and Status
  • Retriever Tech Ops and Viewership

Cisco Digital Content Manager
Groom and rate clamp SDV streams, and perform advertisement insertion, rate shaping, and transcoding.

Cisco Netcrypt Bulk Encryptor (PDF - 443 KB)
Provide independent scaling of encryption and edge QAM resources while connecting to the IP network over Ethernet.

Cisco Model D9500 Switched Digital Video Server (NTSC and PAL) (PDF - 570 KB)
Control and arbitrate bandwidth for multiple applications, and manage allocation of bandwidth between SDV and existing VoD services.

Cisco Universal Session and Resource Manager (PDF - 829 KB)
Provide real-time SDV session management of the set-top and deliver edge resource management for the QAMs to help ensure effective use of QAM bandwidth.

Cisco Edge QAM Modulators
These modulators interoperate with standard IP switches and routers, deliver SDV over the HFC network, and help enable QAM sharing between SDV and VoD services.

Cisco 7600 Series Routers
Provide high Gigabit Ethernet and 10 Gigabit Ethernet port density for delivery of voice, video, and data services over cable networks with the Cisco 7600 Series router.

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