Jaton V.90 user manual FAX Mode

Page 11

It implements all data rates and modulation schemes for IT-U (formally CCITT) standards V.34, V.32bis, V.32, V.22bis, V.22, V.21, Bell 212A, and Bell 103. The INTEL / AMBIENT MD5662 implements a standard data mode AT command set. This is compatible with any communication application software that supports the Hayesâ AT command set.

V.42/MNPâ 2-4 AND V.42 BIS/MNPâ5 MODES

The modem supports error correction(V.42/MNP 2-4) and data compression (V.42 bis/MNP 5). Error correction ensures error-free data transfer. Data compression substantially increases the modem data throughput over the basic data rate. Depending on the data stream, MNP 5 may provide up to 2- to-1 compression. Alternately, CCITT V.42 bis may provide up to 4:1 compression.

FAX MODE

In the fax mode, the modem operate at up to 14,400 bps (transmit and receive) and implement all the data rates and modulation schemes for CCITT standards V.17, V.29, V.27ter, and V.21 channel 2. The Cirrus/Ambient chipset implement a standard fax command set compatible with any communication application software that supports EIA/TIA-578 Fax Class 1 standards.

VOICE/AUDIO MODE

In voice/audio mode, enhanced 2-bit or 4-bit per sample ADPCM coding and decoding at 7200Hz sample rate allows efficient digital storage of voice/audio. This mode supports digital telephone answering machine, voice annotation, and audio recording and playback application.

TELEPHONE-EMULATION MODE

This mode allows a microphone-speaker and modem to be used as a complete telephone. In Telephone emulation mode, the received data from the microphone interface is looped back to the SAFE analog transmit pins. In voice mode, the message record and playback abilities are accessed by the extended AT command set.

11

Page 10 Page 12
Image 11
Page 10 Page 12
Contents Communicator Part 15-Radio Interference Iii Page Trademark Acknowledgments Table of Contents Vii Introduction FeaturesModem Communication Data Communication Standards SpecificationsModes of Operations System requirementsFAX Mode Videoconferencing V.80 Support Customer Support Check ListBoard Layout HardwareModem Interfaces Hardware Jumper SettingHardware Installation Steps Page Software Driver installationPage Page Page Click on Change Click on Have Disk… button Page Diagnostics Click on Diagnostics tab Click on the modem installed. And then click on More Info… DIAL-UP with Hyper Terminal Page Page Page Change the Maximum speed if necessary Click on Advanced… Software Installation Communicator V.90 CD-ROM Modem Basic Trouble ShootingNvram Mode Data Rate Affected Data Bps DCD Ccitt Technical tipsProblem Modem would not dial Problems and solutions555 3333 To get a pause Problem Error message Problem Modem does not respond to AT Commands Overview AT CommandsBasic AT Commands AT CommandsH1 Modem goes off-hook Command Description V1 Enable long-form result code. Text or Verbose Ext. Result Code Dial Tone Detect Busy Tone Detect DCD Data Carrier Detect option Default=1 Denies RDL request from remote modem +MS=m Select Modulation Default +MS=V.34, 1, 300, 0 see note Page Modulation Possible rate bps 42/V.42 bis MNP AT Commands Command state, transmit break to remote if in reliable mode Fax Identity Commands Fax Class 1 AT CommandsPage IS-101 Voice AT Commands IS-101 Voice AT Commands+VRX Command Function Default Range Videoconferencing Mode CommandsRegister Summary Registe Function Range Units Saved DefaultSaved in Nvram Register Function Range Units Saved Default Exclusive Obligation Other LimitsTerms and Conditions Services agreementOther Statements Entire Obligation Reducing Warranty Claim RejectionsFor Reseller / Vendor Use Only

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.
Top Page Image Contents