- Triple play (telecommunications)
telecommunications, the triple play service is a marketing term for the provisioning of the two broadband services, high-speed Internet access and television, and one narrowband service, telephone, over a single broadbandconnection. "Triple Play" focuses on a combined business model rather than solving technical issues or a common standard.
At the turn of the century, cable companies were in a technical position to offer "triple play" over one physical medium to a large number of their customers, as their networks already have sufficient bandwidth to carry hundreds of video channels. Cable's main competition for television in North America comes from satellites, which cannot compete for voice and interactive broadband due to the latency imposed by physical laws on a
geosynchronous satellite. Cable's main competition for voice and Internet access comes from telcos, which cannot yet compete for television in most markets because DSL over most local loops cannot deliver enough bandwidth.
As an interim marketing move while they install fiber closer to the customer,
telcos such as AT&Tare doing co-promotion deals with satellite TV providers to sell television, telephone, and Internet access services bundled for billing purposes although the services provided through a satellite link and the services provided through a phone line are not technically related. Telcos that own wireless phone networks are also including those as part of such billing-only bundles because most cable companies do not own wireless networks
Today, "triple play services" are offered by
cable televisionoperators as well as by telecommunicationoperators. It paves the way for these service providers to compete with one another. It relies on the assumption that an integrated solution will increase opportunity costs for customers who may want to choose between service providers. Interoperability is not a design target. The term is primarily used in the US.
There are multiple and intense regulatory battles over "triple play" services as incumbent telcos and incumbent cable operators attempt to keep out new competitors -- since both industries historically have been regulated monopolies,
regulatory capturehas long been as much a core competency for them as have been prices and terms of service. Cable providers want to compete with telcos for local voice service, but want to discourage telcos from competing with them for television service. Incumbent telcos want to deliver television service but want to block competition for voice service from cable operators. Both industries cloak their demands for favorable regulatory treatment in claims that their positions favor the public interests. In March 2007 cable operators scored a major victory when the FCC overruled two state public service commissions by ruling that incumbent local exchange carriers must connect to VoIP services [http://news.yahoo.com/s/pcworld/20070304/tc_pcworld/129580] . Regulators in South Carolina and Nebraska had been allowing local telcos to block Time Warner Cable from offering local phone service in their states. In the other direction, also in March 2007 the FCC limited the powers of municipalities and states over telcos that want to compete with cable TV companies [http://www.informationweek.com/shared/printableArticle.jhtml?articleID=197800544] ; consumer groups expressed displeasure with this FCC ruling because they fear telcos will only offer service to the richest neighborhoods (a major bone of contention between telcos wanting to offer television service and local governments is that local governments typically impose "build-out" and community access requirements so a cable provider is forced to wire the entire town within a specified period of time). All three Republican members of the FCC voted for this decision, while both Democratic members voted against it and one predicted either Congress or the courts would overturn it. In October 2007, The Hartford Courant reported that Connecticut regulators have ordered AT&T to stop signing up new customers for its IPTV service until they got a cable license; AT&T said they would fight this decision in court [http://www.courant.com/business/hc-att-1015,0,7352347.story?coll=hc_tab01_layout] .
local exchange carriers (LEC), "triple play" is delivered using a combination of optical fiberand digital subscriber line(DSL) technologies (called fiber in the loop) to its residential base. This configuration uses fiber communications to reach distant locations and uses DSL over an existing POTS twisted paircable as last mileaccess to the subscriber's home. Cable television operators use a similar architecture called hybrid fibre coaxial(HFC) to provide subscriber homes with broadband, but use the available coaxial cablerather than a twisted pairfor the last mile transmission standard. Subscriber homes can be in a residential environment, multi-dwelling units, or even in business offices.
Using DSL over twisted pair, television content is delivered using
IPTVwhere the content is streamed to the subscriber in an MPEG-2transport format. On an HFC network, television may be a mixture of analog and digitaltelevision signals. A set-top box(STB) is used at the subscriber's home to allow the susbcriber to control viewing and order new video services such as "movies on demand". Access to the Internet is provided through ATM or DOCSIS, typically provided as an Ethernetport to the subscriber. Voice service can be provided using a traditional plain old telephone service(POTS) interface as part of the legacy telephone network or can be delivered using voice over IP(VoIP). In an HFC network, voice is delivered using VoIP.
Some service providers are also rolling out
Ethernetto the home networks and fiber to the home, which support "triple play services" and bypass the disadvantages of adapting broadband transmission to a legacy network. This is particularly common in green field developments where the capital expenditureis reduced by deploying one network to deliver all services.
For existing multiple-dwelling-unit (MDU) buildings, where running fiber to each unit may not be feasible, telcos often use
VDSLto connect individual units over existing copper through a central optical network terminal located in the existing telco closet [http://news.thomasnet.com/companystory/477946] [http://www.ospmag.com/issues/article/?articleid=00000407] . Over such a short distance DSL can deliver much higher bitrates than is possible running DSL over the local loop from the nearest central office as is common with basic DSL.
"Triple play" has led to the term "quadruple play" where wireless communications is introduced as another medium to deliver video, Internet access, and voice telephone service. Advances in both
CDMAand GSMstandards, utilizing 3G, 4G or UMTSallows the service operators to enter into quadruple play and gain competitive advantage against other providers. The grouping together of services (as triple or quadruple play) is called multi-play.
Other advanced technologies such as
WiMaxor 802.16 has allowed new market entrants to achieve triple play. Many speculate that this means serious, new competition for established providers of bundled telecommunications services.
The challenges in offering "triple play" are mostly associated with determining the right business model, backend processes, customer care support and economic environment rather than technology. For example, using the right billing platform to address a variety of subscriber demographics or having the appropriate subscriber density to financially justify introduction of the service are a few factors that affect decisions to offer "triple play service".
In addition to the challenges mentioned above, there are a number of technical challenges with regards to the rollout of triple play services. Voice, video and high speed data all have different characteristics and place different burdens on the network that provides access to these services. Voice services are greatly affected by
jitter, whereas packet lossor packet reordering has a greater effect on video and data services. Using a shared network resource such as cable or DSL requires that the network equipment used employs quality-of-service mechanisms.
*PRAXIS PROFILINE special edition: Triple Play - The future of media convergence [http://www.praxis-profiline.de/bestellung-e.htm]
* [http://www.versatek.com/products/products.htm Versa Technology - Triple Play Products & Solutions]
* [http://www.iptp.net IPTriplePlay Ltd - telecommunication company]
Voice over IP
Billing Mediation Platform
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