2-16
Software installation
on this timing over the ISDN interfaces to any connected terminal
equipment or downstream ISDN PBXs. The NT interface enables the
device itself to behave like an exchange.
Various settings are available to define the ISDN interfaces with
which a Swyx VoIP Router receives the ISDN timing (to be passed on
to the devices at the NT interfaces).
•
PCM synchronization bus
: Automatically selects one of all TE
or (reverse configured) NT interfaces currently supplying a
timing. If the selected interface stops supplying a timing (e.g.
because the bus is inactive), the Swyx VoIP Router switches to
the next available interface that is supplying a timing.
•
ISDN/S0 Bus
: This setting takes on the ISDN timing from the
connection for use by the Swyx VoIP Router and further devices
connected over the NT interface. In this way, the timing can be
switched through in parallel to an existing ISDN PBX at a point-
to-point connection.
The selected ISDN interface has to be configured for TE mode.
The ISDN-interface settings contain two more modes which play a
particular role in this context:
•
DSS1 NT reverse
or
DSS1 NT point-to-point reverse
: When all
ISDN interfaces are operated in NT mode, the timing system
runs "freely" because there is no TE interface to take on the
ISDN timing. If in this case the ISDN connections are
connected, for example, to an ISDN PBX which is being
supplied with ISDN timing from another source, then
interference to the transmission may arise because the timing of
the Swyx VoIP Router is not synchronous to that of the PBX. In
such cases, the reverse setting allows the ISDN timing to be
taken from an NT-mode interface, so ensuring that the Swyx
VoIP Router runs synchronously with the overall system.
The PBX or remote station with an interface in TE mode must be able
and configured to transmit the timing.
2.6
Software installation
The following section describes the installation of the Windows-
compatible system software LANtools, as supplied.
Summary of Contents for SwyxConnect 1722
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