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If you like it, buy me a beer
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Horizontaal |
General
modem info
related topics: Digital modulation
techniques, Telephony |
Asynchronous Modem Communication This paper covers the basic RS-232
signaling, error correction, compression, and modulation standards,
pdf file |
AT command list
The PC Card modem will respond to the commands detailed below. Parameters
applicable to each command are listed with the command description |
Broadband
First-Mile Technologies This paper discusses various technologies used to
deliver high-speed residential Internet and role played by the Internet Service
Provider (ISP) in delivering those services |
DPSK mode
describes the sixteen-tone differential phase-shift keying (DPSK) mode |
FAX Modem Transmission Modulation Systems Constellation Points, QAM, TCM,
DAMQAM, DPSK, Modulation techniques |
FAQ dated but still
useful |
How
Analog Modems Work How Analog Modems Work |
How
Modems Work How Modems Work, Analog communications, Modems,
Modulation-demodulation methods, Baud rate Vs. Bits Per Second, Digital serial
communications, Simplex, half-duplex and full-duplex, Synchronous serial
transmission, Asynchronous serial transmission, The RS-232C standard, Mechanical
and electrical specs, Control lines, Handshaking, Null modem,
pdf file |
ICT Regulation
Toolkit |
Modem AT
command set 2 a complete summary and explanation of the AT command set for Hayes compatible dial-up modems |
Modem Block Diagram V90 Modem Block Diagram,
pdf file |
Modem Block Diagram V92 Modem Block Diagram,
pdf file |
Modem: list of modem command
sets |
Modem-HOWTO Serial Port and Modem Basics, AT Commands, dialing, ISDN modem,
... |
Modem
operation Operating states, Switching to command mode, Data format, Entering
AT commands, Errors in command lines, A/ Repeat last command, V.42 and
V.42bis, MNP 2-5 and MNP 10, Selecting the error correction method, Selecting
the data compression method, Error correction and data compression messages,
Error correction & data compression |
Modem
Reference Index Data/FAX Modem Transmission Modulation Systems, Data/FAX
Modem Transmission Reliability and Compression Protocols, ITU/CCITT/EIA/Bell
RS-232 Connector Pin Assignments |
Modems
a modem converts digital signals from your computer into audible
tones which can be transmitted over ordinary analog phone lines. This process is
called modulation. On the receiving end, a modem demodulates the analog signals
arriving over the phone line into electrical signals which are then fed to the
computer. MOdulation and DEModulation accurately describe what modems do |
Modems
pdf file |
Modems
Range, Short Haul, Voice Grade (VG), Wideband, Line Type, Dial-up, Leased,
Private, Operation Mode, Half Duplex, Full Duplex, Simplex, Synchronization,
Asynchronous, Synchronous, Modulation, AM, FM/FSK, PM, TCM |
Modem Speeds, Baud Rate, Modulation Method,
Amplitude Modulation, Frequency Modulation, Phase Modulation |
MODEMS FOR THE PSTN AND INTERFACE STANDARDS
pdf file |
Modulation and
demodulation modems for datatransmission over analog lines,
pdf file |
Modulation modems
Half Duplex, simplex, Full Duplex, modulation, en Français, pdf
file |
Nullmodem.Com
Connector pinout and cable reference, 10Base-T crossover, serial, parallel, USB,
serial port, connector pinout, DB-25, DB25, DB-9, DB9, RJ-45, RJ45,
ethernet, null-modem cable |
Practical
guide to analog modems Data Communication Equipment and Data Terminal
Equipment, Hardware Flow control and other Out of Band signaling, Carrier
Detect, CD, Ready To Send, Clear to Send, CTS, Ring indicator, RI, RTS, DCE
serial Interface and the DTE Serial Interface, Hardware Flow Control Commands,
Baud vs. Bits Per Second, Error Correction, Line Equalization, Problems in
Handshaking, Retraining, Fall Forward and Fall Back |
Horizontaal |
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Last updated on:
2011-01-02
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