DTMF

Dual-Tone-Multi-Frequency. The use of two simultaneous audio band tones for dialing.

CCITT

Acronym for the International Telegraph and Telephone Consultative Committee. An international organization that decides upon recommended communication protocol standards. Also see ITU-T.

ITU-T

International Telecommunication Union-Telecom. Formerly CCITT.

Technical tips

1.Make sure the modem card is fully insert into the expansion slot.

2.Check to make sure that the phone and line cables connected to the correct jacks on the back of the modem.

Some communications software packages allow you to set the initialization (INIT), dialing, hang-up, and auto answer command strings. In doing so, you may encounter problems with the following commands:

E0 The use of this command results in an apparent loss of command echo from the modem.

Solution: Change the command to E1(Default).

M0 This command disables the monitor speaker, not allowing you to monitor either the dialing or call progress.

Solution: Change the command to M1(Default).

Q1 When this command set, the modem will not return any result code. Change the command to Q0(Default).

Sn=x This command is use to directly set an S-register value. Some registrars were well define (i.e. S0.) Other registrars are bit-mapped and their operation will vary depending on the modem type and configuration. Typically, S-registers store parameters set by other AT

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Jaton V.90 user manual Technical tips, Ccitt
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V.90 specifications

The Jaton V.90 modem is a classic example of 56K technology that revolutionized dial-up internet connections in the late 1990s. As one of the early models supporting the V.90 standard, this modem enabled users to experience faster internet speeds compared to its predecessors. The V.90 protocol allowed for a maximum download speed of 56 Kbps, offering significant improvements over the previous V.34 modem, which capped out at 33.6 Kbps.

One of the standout features of the Jaton V.90 is its ability to adapt to different line conditions, ensuring optimal performance regardless of the quality of the telephone line. The V.90 standard provided a retransmission mechanism that allowed data to be resent if errors occurred during transmission, improving reliability and reducing the likelihood of dropped connections.

The modem incorporates technologies such as error correction and data compression. With built-in error correction protocols like V.42 and MNP, the Jaton V.90 can detect and correct common transmission errors, which is vital in maintaining a stable connection. The data compression technology, which uses MNP Class 5, enhances throughput by compressing data before transmission. As a result, users could effectively increase their upload speeds and minimize latency, creating a more seamless browsing experience.

The hardware features of the Jaton V.90 modem typically include a standard RJ-11 telephone connector, which makes it easy to connect to existing phone lines. The modem may come with both internal and external configurations, allowing flexibility depending on user preferences and system requirements. The external version often features indicator LEDs that provide real-time feedback on connection status, data transfer activity, and power status.

Compatibility is another crucial aspect of the Jaton V.90 modem. Operating with a variety of systems, it was designed to work with Windows, Mac OS, and other operating environments, making it accessible for a wide range of users. Additionally, the modem generally supports various software applications for easy configuration and management.

Ultimately, the Jaton V.90 modem played a pivotal role in facilitating internet access during a transformative period, laying the groundwork for future high-speed connections. While modern broadband solutions have since eclipsed dial-up speeds, the legacy of the Jaton V.90 as a reliable and innovative piece of technology remains significant in the history of internet connectivity.
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