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Tuesday, May 29, 2007

IMS: Ideal Architecture for Quadruple Play for Operators

The July 2007 IEC publication, titled "Beyond the Quadruple Play: Networking, Convergence, and Customer Delivery" will feature an article I wrote on behalf of my company which talks about why I think IMS is the ideal architecture for such a network.

The download link to the paper is here (Sorry for the indirections, but as I said, I am liberally going to promote my official blog here to - don't complain - you ain't paying *grin* )


Broadband IP is a great leveling ground when it comes to converged services being offered by multiple providers. For example, with the availability of Broadband, companies such as Vonage could offer IP based phone replacement solutions threatening the turf of established phone operators. Similarly, Comcast can now suddenly offer Cable VoIP (phone service) and Verizon can now suddenly offer TV services over IP, thereby threatening each in service areas that were traditionally never their turf. Broadband IP has also enabled ‘new kids on the block’ like Skype, Joost and others to offer bundled services that threaten the trillion dollar communications industry as we know it. This is one main reason why carriers are competing to stay alive with “Quadruple Play” blended services that offer Voice, Video, Data and Wireless accessibility into one.

However, providing Quadruple-Play across heterogeneous networks (WiMAX, DSL, Cable, cellular etc.) is a non-trivial task and one needs a robust and well thought out architecture which ensures that services can be provisioned and provided uniformly to subscribers in a way that lends to seamless user experience and operator provisioning/charging and billing.

This paper describes the merit of IMS (IP Multimedia Subsystem) - an over-arching

architecture specification that enables uniformed IP based service delivery over diverse network types (WiFi, DSL,WiMAX, Cellular technologies etc.) as the ideal architecture for operators to deliver Quadplay services to their users.


  1. I browsed throught the white paper & it was an interesting read. When IMS was born, there was all the talk of providing a unfiorm service delivery platform for dual/ triple/ quadruple play over hetrogenous networks. Though 3GPP has done a commendable job on IMS, I don't think IMS has still gained universal acceptance as yet.

    Further, I don't think WiMax has lived up to the expectations with which it was conceptualized.

    All in all, I believe that providing seamless quadruple play services across hetrogenous networks is still a distant reality.


    Gtalk: gaurav.kheterpal

  2. Hi gaurav, it depends on the perspective of the comment.

    South Korea and Japan have deployed triple play services for over 2 years now (phone+TV+internet). EU has around 15 IPTV deployment over the last year. In north america, Verizon FiOS has deployed triple play. As far as wimax is concerned, most of the developing countries have gone ahead in wimax deployments - wateem, in pakistan, is IMS over WiMAX. In india, wimax deployments are in trial (BSNL). North America has several deployments planned for 08 (Grand Rapids,Sprint-Nextel).

    So triple play is here for the past 2-3 years depending on which country you are talking about. Quadruple (add mobility) is aleady being trialed in asia-pacific.

  3. Arjun,

    Thanks for the update. I guess being bogged down in SIP/IMS development for the last 6 years, I've some what lost track of the deployment scenarios :).

    Keep up the good work !


  4. internet phone serviceJuly 18, 2007 at 9:07 AM

    If I'm not wrong, that colud be a solution for the small business phone system.