Passive fibre local loop for telephony with broadband upgrade
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Abstract:
A new and potentially economic method has been identified to serve small business customers (say less than 20 lines) and eventually the residential market via an all-fiber access network. The target is to provide a fiber network justified solely on the basis of known services such as telephony while laying down a fiber infrastructure that can support a wide range of new services from telemetry to CATV and b-ISDN. The solution lies in sharing a single-mode feeder fiber from the exchange over several customers premises using a number of passive optical splitters in the street network. Time-division multiple access is used initially on one wavelength to support telephone while other wavelengths will be used later to support future service upgrade including broadband.< Keywords:
Upgrade
Hybrid fibre-coaxial
Cable modem
Telecommunications service
Broadband communications are here today. The most important discussion revolves around the architecture of the distribution network. The technologies based on conventional telephone architectures utilize dedicated bandwidth to each individual phone, thus making addition of new phone lines expensive. Most installed cable systems today utilize broadcast type networks to allow customers to tap into the information flow. FPN has patented technology which utilizes cable plants enhanced for two-way communications. Each customer taps on to the cable just like a TV or set top converter, taking advantage of a two-way telephone connection on the same plant which provides TV distribution.
Hybrid fibre-coaxial
Cable Internet access
Cable modem
Digital cable
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Describes the special features, technologies, and communications applications supported by Integrated System Digital Network (ISDN). ISDN is a set of communications standards for simultaneous digital transmission of voice, video, data, and other network services over the traditional circuits of the public switched telephone network.
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Signalling system No.7 (SS7) has been applied to conventional public switched telephone networks (PSTN), integrated services digital networks (ISDN), broadband-ISDN, advanced intelligent network (AIN), and mobile telephone systems. Though planning methodologies for the above service networks are well established methodologies for SS7 network planning are not widely publicized. We develop a structured procedure for planning the SS7 network, taking into consideration the different performance requirements of PSTN/ISDN.
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The standard sound signal analogue network of telephony has been enhanced and telephone lines are no longer used just to transmit voice information. Voice and data is increasingly being sent via lSDN (integrated services digital networks) which has improved the speed, security and cost of transmitting information. ISDN allows an organisation to link all of its national and global sites simultaneously.
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Interface (matter)
ENCODE
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A revolution is in the offing for telephony. Over the next 20 years, the public switched telephone network will be integrated with specialist data-transmission networks to create a common universal network for speech and data — the ISDN
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Integrated Services for Digital Network (ISDN) is a set of communication standards for simultaneous digital transmission of data, voice, video, and other network services over the traditional circuits of the Public Switched Telephone Network (PSTN). It was first defined in 1988 in the CCITT red book. Before ISDN, the telephone system was viewed as a way to transport voice and some special services available for data.
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