installing windows .hlp and .chm help, etc.
Clean up used computer before selling?
CPU smoked - is it dead?
PCIe3.0 cards work in 2.0 slots?
windows reboots on install - why?
UPS and upgrading the battery - and why not to!
current modem standards (CCITT is now ITU-T). note that you have to be a subscriber to get detailed spec info.
Subject: Re: FAQ -- define v.32, v.42, etc.
>> > mnp-10 -- ???
>what about MNP2,3,4 and MNP10?? what about V.fast??
* Full Text COPYRIGHT Harry Newton 1991.
every manufacturer conforms, then every modem can talk to every other one.
standard). You have to conform to error control. That's another standard.
compression. ISDN terminal adapters are V series recommendations, too.
standards and "ter" designates the third in a family.
* Full Text COPYRIGHT The Computer Language Co. Inc. 1991.
alignment between the DTE and the ISDN B channel.
channel connection between multiple DTEs.
on dial-up lines. It uses FSK modulation.
3 fax negotiation and control procedures (CCITT T.30).
switched telephone network and on leased circuits.
full-duplex modems for use on dial-up lines. It uses DPSK modulation.
fallback to V.22 1,200bps operation. It uses QAM modulation.
(1,200/75, 75/1,200bps). It uses FSK modulation.
(DTE) and data communications equipment (DCE) equipment.
and the connector and pin assignments defined in ISO 2110.
network so that a full-duplex modem will operate properly.
subset of the functions of the Hayes Standard AT Command Set.
oriented synchronous (bisync) and bit-oriented synchronous (HDLC/SDLC).
functions and is limited to dialing and answering calls.
time); it provides an optional 75 bps reverse channel as well.
only in a few installations in France, as far as we know).
permitting a full-duplex modem to send and receive on the same frequency.
on four-wire leased lines. It uses DPSK modulation.
leased lines, or half-duplex on two-wire lines.
leased telephone-type circuits. 2.4 Kbps modem for 4-wire leased circuits.
optional 75 bps reverse channel.
assignments defined in ISO 2110.
Group 3 fax for image transfer at 7200 and 9600bps.
and V.42 bis DATA COMPRESSION.
transmission line among multiple terminals.
in those cases." V.35 is no longer published by the CCITT.
become a de facto standard for a high-speed interface.
when combined with V.42 depending upon the type of data being transferred.
V.42 bis was approved by the CCITT because of its technical merits.
two-to-one compression. Also, V.42 bis provides for built-in "feedback"
mechanisms, so that the modem can monitor it's own compression performance.
compression, it will do so automatically.
benchmark tests to find the modem that provides the best performance.
the Recommendation is for backward compatibility with the "installed base"
local and remote analog loopback.
performance. Newer procedures are under currently under study.
compression can talk to a modem that lacks MNP data compression.
compression methods, including the CCITT recommendation, V.42bis.
recommendation for modem error control.
modems are capable of supporting MNP Class 2 performance.
the modem while communications between modems is synchronous.
between modems is altered according to the quality of the physical link.
approximately a 2900 bps throughput).
full-duplex service on the half-duplex V.29 modem connection.
user data in the shortest possible Huffman codes.
V.42bis supports an average 400 percent efficiency improvement.
message was received- and to retransmit information following an error.
with error correcting protocols, only the failed messages are resent.
adjust frame size based on line quality.
5 Compresses data up to two times.
7 Compresses data up to three times.
better performance over variety of links.
LAP-B (LAP-Balanced) Used in current X-25 networks.
the third in a family. See V SERIES.
speed; for example, 1,200 baud means 1,200bps. See previous paragraph.