The Technical Reference Model
|
|
city |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
|
Helsinki |
|
x |
|
|
x |
|
x |
|
Antwerp |
|
x |
|
x |
x |
|
x |
|
Manchester |
x |
x |
|
|
x |
|
x |
|
Barcelona |
|
|
|
|
|
x |
x |
|
Liege |
|
|
|
|
|
|
x |
|
Nice |
|
x |
|
|
|
x |
x |
|
Den Haag |
x |
|
x |
|
x |
x |
x |
|
Bologna |
|
|
|
x |
x |
|
x |
3: generic services; 4: Education; 5: Transport; 6: Health; 7: Culture; 8: Electronic Commerce; 9: Public and Civic Services.
In this table an overview of enhanced access modes is shown:
|
city |
Basic technology |
Enhanced technology |
|
Helsinki |
PSTN / ISDN |
- |
|
Antwerp |
PSTN / ISDN |
ADSL |
|
Manchester |
PSTN / ISDN |
110k video stream |
|
Barcelona |
PSTN / ISDN |
- |
|
Liege |
PSTN / ISDN |
Cable IRD <= 2mb; Cable modem + Ethernet |
|
Nice |
PSTN / ISDN |
Cable modem + Ethernet <= 2mb |
|
Den Haag |
PSTN / ISDN |
Cable <= 115kb (planned) |
|
Bologna |
PSTN / ISDN |
- |
Antwerp
Public kiosks (infobooths) with Euro-ISDN, ADSL or
fibre-optic are installed in the district houses and in the
museums. From within the museums you can make use of a high
speed intranet connection (ADSL)
Manchester
Each time we have an ISDN VC, we can make the
Manchester side of the VC available over the Internet using
Microsoft NetShow either stand-alone or embedded in a Web
page,
At Manchester University in the Manchester Computing
building, we have a Video Conferencing room equipped with
several broadcast quality video cameras and associated
equipment, which is set up as Video conferencing suite for
use over ISDN.
What we have done, is to tap into the outgoing Audio and
Video data, and redirect the signals to a Pentium II P300
system running a Microsoft NetShow encoder. On another
system, a dual processor Pentium II running Windows NT
server, we have installed a Microsoft NetShow media
server.
The Microsoft NetShow encoder can be set to supply a
compressed stream at any bandwidth from 14,400 up to over
500,000. We have used the encoder at the 110k (Intranet)
settings, but have adopted 56k for future transmissions. The
encoder also has the ability to save a copy of the streamed
signal locally, which can be used to build up a library of
pre-recorded streams.
Liege
The intention is to organise a Public Broker
service on the Cable Network and on the Telephone Networks
accessible by general PC's, Specialised PC's, and IRD's
equipped with the Home Media Platform facilities and the
Smart-Card controlled CAS named MediaGuard running in open
mode.
Nice
Access to Intranet and Internet services through
the Cable Network.
Subscribers need a PC plus an Ethernet Card plus a cable
modem.
The technologies used are full Internet standards and for
some network functionality's, Windows standards.
The coding techniques are standard as well: MPEG1, JPEG,
WAV…. &endash; HTML (3)- TCP/IP, UDP…
The downstream bandwidth can go up to 27 Mbits/s and
practically often reaches 1 Mbit/s; as for the return path,
it goes up to 768 Kbits/s.
The system is exactly the one described in the reference
model: see Appendix A, third illustration.
Den Haag
(planned) Access will be given to the internet at
115kbps Server to User and 64 kb User to Server. The Cable
modem is connected to the parallel port of the computer.
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