Pat -> All - Tonights search not very productive.
Bypass this post if your in a hurry!
Since it was slow here tonight, I went fishing to night at my favorite spot on Web Lake. Most of the catch was dated late 95. I've had much better luck on the other side of the lake. I posted some of the more interesting ones from tonights catch, even if dated. Also posted are URL's but most of tonights are not worth checking out further, The best content is highlighted.
The first byte was an Amati, a small fish that puts up a good fight.
I caught him on an Alcatel hook, with ATM as bait, on DMT line code.
I say, I say, that's a JOKE son! and has no relationship to the real world....... Foghorn WebFoot
Amati has a new addition to their site:
JW@KSC
amati.com
Why DMT is Better for ADSL
193.118.248.58
Field trials will be implemented in Denmark and Portugal in conjunction with the National Hosts. The field trials will
have more than two hundred customers connected including residential and professional customers. The National Host
in Denmark includes a video-on-demand trial based on ADSL from which results will be used in the comparison of technologies. The project will actively promote different user communities i.e. hospitals and banks to use the testbed for the development of customer services. ACTS projects will be invited to test customer services and terminals. The trials will be interconnected to enrich the service possibilities offered.
uk.infowin.org
ACRONYM WATCH - ADSL PROTOCOLS
And some order in multimedia standards does seem necessary - the recently developed ADSL technology for video-on-demand has already split into two competing protocols, Carrierless Amplitude Modulation/Phase Modulation (CAP) and Discrete Multitone (DMT). While CAP is a fixed data rate system, DMT can run in 32-bit
increments, making it better suited for ATM, say experts. However CAP was the first protocol to emerge and commercial systems are available now, while DMT is running about a year behind in the development curve.
uk.infowin.org
ADSL (Asymmetric Digital Subscriber Line), being studied by ANSI (American National Standard for Information), defines three channels: the traditional analogue telephone channel, a mono-directional data channel from 1,5 to 6 Mb/s, and a data back channel from 9,6 to 16 Kbps. With about 2 Mb/s it is possible to transfer compressed TV
images at VHS quality level, and with 16 Kbps, it is possible to interact with a central host. This technique should be used only at the subscriber loop level, that is in the "last mile" from the central office to the "end-user" premises.
The video server will be the database for most of the offered multimedia services. Philips offers a video server solution
with their Digital Video System (DVS) in which a MPEG 2 ISO/IEC 13818 compliant solution is used. e.g. with G 703 interface, and with satellite and cable connection possibilities aside telecom network connectivity. Alcatel is running a video server in the Berlin-VoD trial of Deutsche Bundespost.
3.3.3. Video-on-demand Trials
Following are some examples not intended to be an exhaustive overview :
Spain
Some technological experiences of VoD are now being carried out and some other will be performed in the short term, involving some hundreds of users. Several network configurations are being used in the trials, including ADSL technology, fiber + coax, and fiber-only solutions for the access network, and using ATM for the transport network.
Germany
In Germany there are several trials of video-on-demand applications using the about mentioned technology. One of the most ambitious trials will take place in Baden-WYrttemberg with access to multimedia services for about 4000 households. The database/video server will contain a variety of multimedia data incl. data about research activity and projects. This could be a good platform for dissemination of results of ACTS projects and demonstrations.
Belgium
BBN has offered to incorporate EU-facilities, i.e. the EU-host in the Belgium VoD trial.
uk.infowin.org
Asian V-O-D Trials
Following Korea Telecom's recent announcement, Hong Kong Telecom and Singapore Telecom are also planning
v-o-d trials. The Hong Kong trial will be based on ADSL, with up to 100 homes participating. The Singapore trial will
involve 150 households and will employ fibre-to-the-home as well as ADSL.
ITU Report
According to the ITU, 1993 was marked by strong growth in cellular telephone networks, 47% during the year
compared with 5% growth in fixed line telephone subscriptions. Cellular connections accounted for 34m of the 641m
main lines worldwide. This helped the revenues of companies who are active in this segment of the market, particularly
Motorola, Ericsson and Nokia. For the telecom industry as a whole, equipment and service revenues reached $575
bn, 1.8% up on the previous year Service revenues were $455bn, up 2.2% on the previous year, while equipment
revenues were stable at some $120bn. The top five manufacturing companies were Alcatel, Siemens, AT&T,
Motorola and NEC.
TECTRIS
........is the name for the Belgacom video-on-demand pilot currently taking place in the Brussels suburb of Woluwe.
Tectris (Technical trial for interactive services) involves 50 households, of whom 25 in a first stage are offered v-o-d
on the local loop using ADSL, 25 in a second stage will be offered the service on a specially installed passive optical
network. The trial started on 1st February and is expected to last six weeks. (More info on this from Belgacom's Web
page belgacom.be)
uk.infowin.org
APRIL-MAY 1996
Bell Atlantic's 1,000-home v-o-d trial in the suburbs of Washington DC, based on ADSL technology, shows
subscribers viewing 3.3 movies per month, not much different from the national rental average (3.2); recent-release
movies are proving the most popular feature on the menu, followed by children's programming and classic movies. On
the negative side, customers are reported to be looking for a more dynamic experience, including for example in home
shopping, which suggests the need to expand the services offered with more advanced technology (a conclusion which
BT came to very early on, when it developed the plans for its current trial from the simple v-o-d test which it originally
conceived). The newsletter also reports on the range of services available in the Orlando Time Warner trial, dubbed
the Full Service Network, which also seems to respond to the demands made by these pioneering users in the Bell
Atlantic trial.
Inside Cable is published monthly. For more information contact Roger Wilson on CompuServe 73064,3357
infoweb.interaccess.com
Internet ADSL from InterAccess
Asymmetric Digital Subscriber Line (ADSL) technology is the next step in providing high-speed data to the home or business. Current technology connects people to the Internet at 28.8Kbps modem speeds or 64 or 128Kbps ISDN speeds. InterAccess' ADSL service, on the other hand, is an Internet connection which provides users with a
1.5Mbps download and 64Kbps upload. It is an order of magnitude faster than either modem or ISDN connections.
However, speed is not the only advantage of ADSL. Modems and ISDN rely on the use of the Public Switched Telephone Network (PSTN), which was designed and built to handle voice traffic-regular telephone calls. Using the PSTN results in constant difficulty with making connections, such as busy signals, ring-no-answer calls, and other reliability and performance problems. But ADSL does not use the PSTN. Instead, it relies upon specially configured lines which bypass most of the phone company's network.
Furthermore, ADSL is a pure network service, meaning the end user is connected 24 hours per day. Modem and ISDN users have to dial up, connect, and then disconnect each time they want to use the Internet, but ADSL users are always on the Internet. This allows the ADSL customer to set up Internet services from his or her own PC. These
services could include Web sites, file archives, or any number of new hosting services coming out. The ADSL customer can also set up his or her computer to send and receive email immediately, throughout the day, instead of having to go through the tedious process of logging on each time. All of the above factors clearly make ADSL a
superior means of accessing the Internet.
Due to the nature of ADSL technology, there are severe geographic limitations to this service. InterAccess' initial deployment is within a roughly 2-3 mile radius of the corner of Canal and Madison streets in downtown Chicago.
InterAccess has completed successful trials of the service in nearby residences. InterAccess' next deployment of ADSL will be within a roughly 2-3 mile radius of locations in Northbrook, Hoffman Estates, Wheaton, and Tinley Park. The deployment schedule for these locations will be driven by demand for ADSL in these various locations.
Deployment beyond those areas will mostly be a function of regulation and/or the willingness of Ameritech to let
InterAccess deploy services speedily.
ADSL customers need only call InterAccess to begin service. We will take care of setting up the ADSL line, selling or
providing the equipment, and if the customer desires, setting up the customer's Ethernet and PC to work properly.
Details and Pricing
For more information, details, and pricing on Business LAN-ADSL Pricing, check out InterAccess' informative link at:
infoweb.interaccess.com
For more information, details, and pricing on Individual ADSL Pricing, please see InterAccess' informative link at:
infoweb.interaccess.com |
