AVT MAGIC ISDN Bedienungsanleitung PDF herunterladen (Seite 5)

General

Telephone Hybrids

What do the products offer?

• Digital Line Echo Compensation for each caller

• Analogue and digital AES/EBU Audio Interfaces

• Remote Control and Status Interfaces

• Echo Cancellation for each caller

• Automatic Gain Control (AGC)

• Expander for noise reduction

• PRETALK Function

• DTMF Generator & Analyzer

• Digital Mix-1

• Call Forwarding

• Screening

• Networked Control

What is a Telephone Hybrid?

Telephone Hybrids convert an incoming call into an

Audio signal for the studio environment. The line ech-

oes on analogue telephone interfaces which result

from the 2-wire technology are eliminated by line echo

cancellers. To achieve the best results for the elimina-

tion of the echoes, digital procedures with signal proc-

essors are used. However, during ISDN or VoIP con-

nections, no line echoes will occur due to the use of the

4-wire technology. If analogue telephone calls are

received by ISDN or IP telephone hybrids, echoes can

also be detected because of the conversion from 2-wire

to 4-wire technology in the analogue telephone unit.

For clear communication digital line echo cancellers

are also required.

In comparison to POTS telephone hybrids, ISDN

and VoIP telephone hybrids have several important

advantages. When a caller disconnects the line con-

nection, this is immediately recognised by the ISDN or

IP hybrid. Therefore, the disturbing disconnect signal

can be cancelled. Moreover, the Program Presenter

always knows whether there is a caller waiting in line

or whether the caller has already hung-up. A further

important advantage is the transmission and the dis-

play of the calling number. Due to this feature the Pro-

gram Presenter can see the caller’s identity before he

accepts the call. In this way, callers can be blocked or

VIPs can be defined.

Details and functions of the systems are described

in the following.

1 2 3 4 5 6 7 8 9 10 ... 27 28

Kommentare zu diesen Handbüchern

Keine Kommentare

AVT MAGIC ISDN Bedienungsanleitung Seite 5

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Zusätzliche Musikausrüstung AVT MAGIC ISDN