Technical data

Table Of Contents

COMpact 3000 analog/ISDN/VoIP - Firmware Version 4.0 - Version of the Manual 03 02/11 577

Glossary

Terminology and Functions

STUN

Using STUN (Simple Transversal of UDP over NATs), the public IP address of a DSL

connection can be determined. To do this, a STUN request is sent to a STUN server, which

then shares its own IP address allocated by the VoIP provider with the DSL connection.

Subnet mask

Configuring subnetworks makes it possible to connect many totally different networks located

in totally different areas because each subnetwork receives its own address and can therefore

be addressed by the router. A subnetwork is created when the IP address is linked with a

subnet mask:

If a bit in the subnet mask is set, the corresponding bit in the IP address is considered a part

of the network address. If a bit is not set in the subnet mask, the corresponding bit in the IP

address is used as a part of the PC address.

The value of the subnet mask, as with IP addresses, is often given in decimal form with

separating points (for example, 255.255.255.0).

T-Net Functions

Functions available on the analog T-Net. There are analog comfort telephones with pre-defined

function keys or menus for T-Net functions such as callback on busy, call forwarding, splitting

or conference calling.

TAPI

TAPI (Telephone Application Programming Interface) is the name of a standardized software

interface for computer-assisted telephony (CTI). TAPI ensures that software and hardware from

various manufacturers are compatible with each other.

Targeted Exchange Line Access

Using targeted exchange line access, you can define which of your own external phone number

is transmitted for an external call.