"Using the digital switch and modem, data moving downstream from a server to a client can theoretically reach transmission speeds up to 64K bps at 8 bits per sample and 8,000 samples per second. However, a number of problems still remain in the system, such as "robbed bit signaling," which uses some of the bits per sample to indicate the status of a call rather than to transmit data, reducing the effective data rate to 56K bps. Federal Communications Commission restrictions have further limited the data rate to 53K bps."
"The 53K limitation is not built into the modems you buy. Instead, it is enforced in the server equipment at the online service or Internet service provider you're dialing into. A software change at the ISP could remove the limitation, and server equipment shipped overseas does not have the limitation."
et "September 18 update: FCC moves to remove limit
The FCC has proposed increasing the power limit to eliminate the effective 53K ceiling."
Y'avait bien une limitation due à la FCC, mais j'ai tout mélangé dans ma tête à moi... Mea culpa, amende honorable, et tout le tralala...
Ceci dit, les autres exemples suffisent je crois...
[^] # 56K!
Posté par Ano . En réponse à la dépêche SSSCA ou la tentative de tuer le logiciel libre ?. Évalué à 1.
http://www.zdnet.com/eweek/reviews/0331/3156tech.html(...)
"Using the digital switch and modem, data moving downstream from a server to a client can theoretically reach transmission speeds up to 64K bps at 8 bits per sample and 8,000 samples per second. However, a number of problems still remain in the system, such as "robbed bit signaling," which uses some of the bits per sample to indicate the status of a call rather than to transmit data, reducing the effective data rate to 56K bps. Federal Communications Commission restrictions have further limited the data rate to 53K bps."
Effectivement, mauvaise mémoire de ma part...
Quand à la limitation dûe à la FCC:
http://www.56k.com/cons/53k.shtml(...)
"The 53K limitation is not built into the modems you buy. Instead, it is enforced in the server equipment at the online service or Internet service provider you're dialing into. A software change at the ISP could remove the limitation, and server equipment shipped overseas does not have the limitation."
et
"September 18 update: FCC moves to remove limit
The FCC has proposed increasing the power limit to eliminate the effective 53K ceiling."
Y'avait bien une limitation due à la FCC, mais j'ai tout mélangé dans ma tête à moi... Mea culpa, amende honorable, et tout le tralala...
Ceci dit, les autres exemples suffisent je crois...