By its long-term presence in the field of equipment for cable operators, Network Manager has acquired significant references related to internet providing on existing HFC networks which had been used for distribution of television signal. In last few years,EuroDOCSIS 3.0 standard and Cisco UBR10k CMTS system have gained momentum, especially among cable providers with larger number of subscribers and those which have multiple services run within their networks (VoIP, DVB-C, IPTV, VoD, etc).
FTTH (Fiber-to-the-Home) is the latest generation of technology providing broadband internet, digital and analog television, IPTV, telephony and other advanced services. End user is given an optical fiber for connecting to a single communication network. Advantages in comparison with other access technologies are: huge capacities, small amount of data loss and unhindered transmission over great distances.
Number of IP/MPLS systems we have introduced to internet service providers so far is significant and it relies on our belief that a cutting edge internet backbone system not only has to be highly reliable and available, but able to transmit all types of information and services (data, voice, video), too. That kind of internet backbone system (IP/MPLS) is an integral part of Next Generation Network (NGN).
In order to make a system IPTV-ready, it is – before anything else – necessary to digitize video signal that is distributed to subscribers, i.e. to create a system for reception, processing and transmission of video contents to end users. Digitalization of video contents in HFC networks is done in accordance with DVB-C standard, where the video signal is transmitted by using MPEG-2 or MPEG-4 method and QAM modulation scheme with channel coding. The base of DVB-C standard is broadcasting system which is going to be transformed into multicasting one in the nearby future. Multicasting system, together with internet protocol (IP) is the key to implementation of IPTV solution.