Glossary

Busy out

An indication to a Central Office that a subscriber line is not available to answer incoming

 

calls. The availability and implementation of Busy Out varies by country.

Byte

An 8-bit sequence of binary digits (bits) taken as a single unit by a computer.

CCITT. See ITU.

Consultative Committee on International Telephone and Telegraph. International data

 

communications standards group.

Character

A group of bits used to represent one digit, letter, or symbol (often in 7- or 8-bit groups).

Character-oriented

A communications protocol that carries control information encoded in fields of one or

 

more characters. Compare with Bit-Oriented.

Control characters

In data communications, any additional transmitted characters that control or facilitate data

 

transmission between data terminals.

CRC

Cyclic Redundancy Check. A BCC error-checking mechanism for link-level data

 

transmission.

Crossover cable

Special DTE/DCE interface cable that reassigns signals from specific pins, thus allowing

 

normal data transfer between two DTEs or two DCEs at the same site.

CTS

Clear To Send. The signal passed from the local modem to the local terminal when the data

 

port is ready to transmit data. Usually occurs in response to RequestTo Send (RTS).

Data compression,

See Synchronous Data Compression.

synchronous

 

dB

Decibel. A unit used to express relative difference in power between acoustic or electric

 

signals, equal to ten times the common logarithm of the ratio of the two power levels. An

 

increase of 3 dB is equal to doubling the power; a decrease of 3 dB is equal to halving the

 

power.

dBm

A measure of power in communications: the decibel referenced to one milliwatt into a

 

600-ohm load (0 dBm = 1 milliwatt).

DCD

Data Carrier Detect. Also known as the Received Line Signal Detector (RLSD). This signal

 

is passed from a local modem to a local DTE when an acceptable carrier signal is received

 

by the modem over the telephone line.

DCE

Data Communications Equipment. A modem or other data transmission device.

Demodulation

In data communications, retrieval of an original digital data signal from a modulated analog

 

signal.

Digital signal

The binary 0 (off) and 1 (on) output of a data terminal. Modems convert digital signals into

 

analog waves for transmission over conventional telephone lines.

DSR

Data Set Ready. This signal is passed from the local modem. Indicates that the local modem

 

is ready to enter the data transmission phase.

DTE

Data Terminal Equipment. End user devices that generate or receive data and that provide

 

data communications control functions. Examples include: central processing units (CPUs),

 

front-end processors (FEPs), high-speed multiplexers, PCs, user terminals, and so on.

2-Glossary

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Telenetics V.34-SDC, 326X V.34, V.32bis Series manual Crc
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326X V.34, V.32bis Series, V.34-SDC specifications

Telenetics has been a key player in the field of telecommunications, offering advanced modem solutions that cater to diverse communication needs. Among their notable products are the V.34-SDC and V.32bis series, including the 326X V.34 modem. These modems have been designed to enhance data transmission reliability and speed in various applications.

The Telenetics V.34-SDC modem represents a significant leap in technology, supporting data rates of up to 28.8 Kbps. This modem utilizes the advanced V.34 modulation scheme, which optimizes the use of existing telephone lines to deliver impressive performance, especially for users requiring high-speed data transmission. The V.34-SDC model also features robust error correction and data compression techniques, ensuring that users receive accurate data even over less than ideal connections. With its extended line-conditioning capabilities, the V.34-SDC modem can efficiently handle long distances and poor line conditions.

Equally noteworthy is the V.32bis series, which provides backward compatibility with V.32 modems, enabling seamless integration into existing systems. Capable of speeds up to 14.4 Kbps, the V.32bis modems are ideal for businesses and environments where legacy systems remain in use. It features adaptive equalization and advanced echo cancellation, ensuring a clear signal is maintained throughout the data transmission process. This versatility allows users to connect with various devices across different infrastructures.

The 326X V.34 modem further exemplifies Telenetics' commitment to high performance. It combines the V.34 capabilities with enhanced security features, offering users encryption options for sensitive data. This is particularly crucial for businesses that need to safeguard their information against potential vulnerabilities during transmission. The 326X also supports various data communication protocols, making it adaptable for multiple platforms and applications.

In summary, Telenetics’ V.34-SDC, V.32bis series, and 326X V.34 modems stand out for their high-speed data transmission, compatibility, advanced error correction, and security features. These technologies make them excellent choices for both enterprise and networking applications where reliable communication is vital. Telenetics continues to innovate, delivering modem solutions that meet the evolving demands of the telecommunications landscape.
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