2N Netstar, Manual

Page: 33 / 282

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2.3 Synchronisation
Upon connection to a public or private ISDN network, remember to configure one port
for synchronisation at least. The PBX works in two modes at the same time: as a
source of synchronisation (Master) and a device that receives synchronisation (Slave).
There are two fields in the
menu. The left-hand one contains HW – Synchronisation
all digital virtual ports that can be selected for synchronisation, i.e. all PRI and BRI
virtual ports in the TE mode. The other field contains a list of virtual ports that have
been selected for synchronisation. All ports in the NT mode can be used as
synchronisation sources.
Figure: View of Synchronisation Port Assigning and Priorities
Use the and buttons to move the selected synchronisation up or down for a Up Down
higher or lower synchronisation priority respectively – the port listed first has the
highest priority (255). Every other carrier has a priority lower by 1 (254, 253, ..). A
newly assigned carrier is always placed last (the lowest priority). In the case of
synchronisation loss, the following port in the list (with a lower priority) is selected
automatically. Upon synchronisation restoration, the PBX returns automatically to the
port with the highest priority.
Push the and buttons to transfer the virtual ports from one field to another Right Left
and thus ensure the PBX synchronisation.