ZyXEL Communications 56K manual Cdr, Cng, Crc, Cts/Rts

Page 72

User's Guide for ZyXEL Omni 56K USB Modem

CDR

Call Detail Record. This is a name used by telephone companies for call-related

 

information.

Cipher Text

Text that has been scrambled or encrypted so that it cannot be read without deciphering it.

 

See Encryption.

Class 2

A standard for fax transfers using a fax modem. Currently several drafts exist which are

 

incompatible with each other. ZyXEL modems support the draft PN-2388 of August 20th

 

1990 and the final 2.0 standard.

Client

A software program that is used to contact and obtain data from a Server software program

 

on another computer. Each Client program is designed to work with one or more specific

 

kinds of Server programs, and each Server requires a specific kind of Client. A Web

 

Browser is a specific kind of Client.

CNG

Call negotiation tone. A calling fax machine sends this tone before connecting to quickly

 

establish a fax connection. A data modem may also have a data calling tone.

CO

(Central Office): a facility that serves local telephone subscribers. In the CO, subscribers'

 

lines are joined to switching equipment that allows them to connect to each other for both

 

local and long distance calls.

Command Mode

In command mode, a modem accepts commands from the local DTE. Data transfer is

 

suspended while the modem is in command mode.

Compatibility

If components are compatible, they work with each other.

COM Port

Another name for the serial port on a PC.

Compression

See data compression.

Cookie

A string of characters saved by a web browser on the user's hard disk. Many web pages

 

send cookies to track specific user information. Cookies can be used to retain information

 

as the user browses a web site. For example, cookies are used to 'remember' the items a

 

shopper may have in a shopping cart.

CRC

Cyclic redundancy check; an error checking protocol.

Crossover

A cable that wires a pin to its opposite pin, for example, RX+ is wired to TX+. This cable

Ethernet Cable

connects two similar devices, for example, two data terminal equipment (DTE) or data

 

communications equipment (DCE) devices.

CTS/RTS

Control signal lines on an RS-232C serial interface. These lines are needed to use hardware

 

flow control.

Cursor

A special marker on a display.

Data Bit

In asynchronous transfers, a character is composed of data bits (the actual information) and

 

framing bits (start bit, stop bit/s, parity bit). The framing bits are needed to recognize

 

whether a character has been successfully transmitted and where a new character starts.

Data

Re-coding of information. The same information is represented by less data bits. ZyXEL

Compression

modems use MNP4 and V.42 compression schemes.

Data Packet

Block of data that is framed by error control groups. A block consists of up to 256 8-bit

 

groups. Data packets are used in synchronous transfer.

Data Pump

The important module doing modulation and demodulation for a modem. The data pump is

B

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Contents ZyXEL ZyXEL Omni 56K USB Modem Iii Users Guide for ZyXEL Omni 56K USB Modem ZyXEL Omni 56K USB Modem Become a Registered OwnerCustomer Support Table of Contents Firmware Upgrade GlossaryList of Tables Page List of Figures Page How to Use This Guide About ZyXEL Omni 56K USBOther Reference Page Main Features ChapterPage Panel Description Front Panel LEDsFront Panel LEDs for Omni 56K USB LED Function DescriptionBack Panel Back Panel DescriptionBack Panel Description USB LineConnecting Your Omni 56K USB USB ConnectorGetting Started Specifications Hardware SpecificationHardware Specifications Specification DescriptionFirmware Specification Firmware SpecificationsMNP SrejCommand Set Protocol SupportData/Fax/Voice Feature Description Feature DescriptionOmni 56K USB Capability Data FunctionPhysical Layer Capacity Flow ControlHardware CTS/RTS Flow Control Standard BIT Rate Baud Rate Modulation Carrier FrequencyError Control Software XON/XOFF Flow ControlData Compression Repeat DialCyclic Dial Caller Number Delivery Caller IDRing Here is an example Distinctive Ring Different Ring Types in Register S40Type BIT on Ring Sequence Security Function Code Description Voice IS-101 Command Set Fax FunctionVoice Function Fax Physical Layer Protocol Fax Physical Layer CapacityBit Voice Data Compression Result Codes Result CodesATV0 ATV1 Connect ATV0 ATV1 X4 Carrier Rx Rate Data Command Sets Basic AT Command SetsBasic AT Command Sets AT Command Sets Requiring an AT PrefixAnswer UPX Extended AT& Command Sets Extended AT& Command SetUsers Guide for ZyXEL Omni 56K USB Modem Users Guide for ZyXEL Omni 56K USB Modem ALB+ST Extended AT* Command Sets Extended AT* Command SetsCommand *Gn requests supervisor password checking Extended AT# Command Sets Extended AT# Command SetsFax Command Sets Service Class 1 CommandsService Class 1 Commands Value of MOD ParametersService Class 2 Commands Command SyntaxSupported Commands per TIA PN2388 dated 8/20/1990 Command Syntax DescriptionCommand Description +FDR+FK +FMDL?Class 2 Command Responses +FPHCTO=+FREV? Response Value Function and DescriptionClass 2 Flow Control +FPOLL+FVOICE Service Class 2.0 Commands Service Class 2.0 CommandsUsers Guide for ZyXEL Omni 56K USB Modem +FCLASS Voice AT Commands Voice AT CommandsCommand Function Option Default Description +VLS +VRA+VRN +VTXVoice Shielded DTE Commands Voice Shielded DTE CommandsVoice Shielded DTE Responses Voice Shielded DTE ResponsesRegister Descriptions Basic S-Registers ATSn=xBasic S-Registers ATSn=x Extended S-Registers ATSn=xEnable baud rate to be fixed when answering. Speed Is detected ATX1 ATX2 ATX3 ATX4 Users Guide for ZyXEL Omni 56K USB Modem ATA Enable 1.5 sec, pause between off-hook and modem Bit Page Firmware Upgrade Upgrading by Software for Windows 98/NT/2000Upgrading by Using a Terminal Program ARQ AsciiCcitt CDR CNGCRC CTS/RTSDCD DCEDLE DramFAQ DSRDTE DtmfFCC FSKHdlc HttpIRC ISPITU-TSS LANLine MNPNdis NICPBX PhonePots Pstn QuietRAM RFCRTS/CTS TAE6 UartUnix URLWWW XmodemXON/XOFF Index
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Manual 1 pages 40.48 Kb

56K specifications

ZyXEL Communications has long been a key player in networking technologies, and their 56K modems stand out as a testament to the company’s commitment to high-performance connectivity. The ZyXEL 56K modem provides users with efficient dial-up internet service, delivering reliable performance for both home and small office environments.

One of the main features of the ZyXEL 56K modem is its data transfer capability, offering speeds of up to 56 Kbps. This speed is accomplished by utilizing the latest advancements in modem technology, enabling users to experience smoother browsing, faster downloads, and efficient email communications. Despite being primarily a legacy technology, the ZyXEL 56K modem continues to be valued in areas where broadband connectivity options are limited or unavailable.

The ZyXEL 56K modem utilizes V.90 and V.92 standards—these protocols define how data is transferred over phone lines. With the V.90 standard, the modem can achieve a maximum download speed of 56 Kbps while upload speeds can reach up to 33.6 Kbps with the V.92 standard. V.92 also introduces enhanced features such as a modem on hold, enabling users to receive voice calls while connected to the internet.

In terms of characteristics, the ZyXEL 56K modem is designed with user experience in mind. Its compact, lightweight design allows easy installation and placement, making it ideal for both home users and professionals. The intuitive user interface, coupled with straightforward installation procedures, ensures that even those with minimal technical knowledge can set up the device without hassle.

Additionally, the ZyXEL 56K modem supports various connectivity options, including serial and USB interfaces, allowing compatibility with a wide range of computers and operating systems. This versatility ensures that users can seamlessly connect to their existing devices, enabling broad usage opportunities.

The modem also features built-in error correction and data compression techniques, which improve data integrity and optimize transmission speeds. Overall, the ZyXEL Communications 56K modem remains a reliable choice for users who require dependable dial-up internet access, showcasing the brand's dedication to fostering connectivity in diverse environments.
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