NetComm AM5698 manual Does V.92 QuickConnect work on all calls?

Does V.92 "QuickConnect" work on all calls?

This feature of the V.92 standard allows the modem to "learn" and "remember" the variables associated with calling a specific telephone number and connecting to a specific modem associated with that number. This feature will be most effective when you repetitively call the same number - such as that for your on-line service or internet service provider. The modem will then be able to use its stored profile and deliver the advantage of a quicker connection.

Does V.44 work equally well on all file transfers? Which are most improved; least improved?

V.44 compression is optimized for the types of files associated with internet use including web pages, graphics and documents such as .PDF files. As with all compression the amount of improved performance varies both with the actual format and with the content of individual pages. For reference, web searches show the most visible improvement, especially searches on web stores or areas that have high amounts of text and numerous small images. The next most improvement is in standard web browsing. Email and downloading of ASCII type text files show noticeable but more modest improvement

Will a V.92 modem work automatically with earlier modems? V.90, K56flex, X2? With 33.6k, 14.4k, 9600 and 2400 modems?

A V.92 modem will automatically negotiate and connect at the best achievable-shared speed down to 2,400 bps. The negotiation and the related connection time may take longer if the connection does need to be negotiated down to a very low speed as the higher speeds are attempted first. However the connection between a 56K V.92 and a 56K V.90 will take approximately the same time as between two current V.90 modems.

How do V.92 modem speeds compare to ISDN, ADSL and Cable speeds?

First, remember that V.92 is asymmetric in nature, the same as ADSL. It offers download speeds from the web which are higher than it's upload speeds. This means that it is inherently different from ISDN and has been optimized, like ADSL, for Internet access. In fact it is optimized primarily with V.44 compression rather than with purely higher transmission speed as found in ADSL and Cable. Because of this it is not possibly to directly compare the different devices except in terms of the Internet experience itself, including Web browsing. Given optimum V.92/V.44 performance of approximately 300,000 bps, this still means that that it will operate at less than half the speed of most broadband services (which range from 600,00 bps to 1,500,000 bps).

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AM5698 Roadster V.92 User Guide	Page 27