Swyx SwyxConnect 1722, Руководство пользователя

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1-14 Voice over IP
• Point-to-point connection (point-to-point): This type of device is
suitable for the connection of one ISDN device only, generally
an ISDN PBX. As an alternative, a Swyx VoIP Router can be
connected to a point-to-point connection.
To connect a Swyx VoIP Router, the interface that is used is set up
for the type of line in use.
Equipment connected to an ISDN connection can be addressed in two
ways:
• The devices are addressed with a multiple subscriber number
(MSN) that is linked to the ISDN connection and cannot be
influenced.
• Terminal devices are addressed via a Direct Dialing In-Number
(DDI). However, only the main external number is associated
with the telephone line; the extension numbers that address the
individual terminal devices can be chosen at will and are merely
suffixes to the main number. The main number, extension and
area selection code (not including the leading zero) can be at the
most 11 characters long.
The terms "point-to-multipoint connection" and "point-to-point
connection" are used in many countries to describe the technical
implementation of point-to-multipoint with MSN and point-to-point
with DDI. Other countries may use different types of connection and
other combinations of protocol and call-number type, or even
different names. Please refer to your telephone network operator for
the technical specifications of your ISDN connection.
1.4.3.4 Bandwidth reservation with failover
High-performance VPN functions allow the reliable transmission of
voice and data between company sites. This spares the telephone bill
from internal communications. A professional firewall, versatile
routing functions and excellent Quality of Service mechanisms make
the Swyx VoIP Router a comprehensive solution for secure voice and
data communication in a single compact device. All functions are
integrated into the central management functions.