2N PBX 2N NetStar - Configuration Manual v2.6.0 - Manual (Page 20)

Synchronization 2.3
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Tab Virtual port
Tab Virtual port is used for easier setting up of virtual ports. In this tab you can set up all
parameters of virtual ports and simultaneously see displayed screen of case. Setting of parameters of
virtual ports is described in chapter 3 according to type of stack.
Addressing
The position of each board is specified in the format R : C : B and the position of a port in the format
R : C : B : P. Meaning of each character is following: R – Number of the rack; C – Number of the
case in the rack; B – Number of the board in the case; P – Number of the port on the board;
Currently R takes the value of 0. C takes the value of 1 to 5. Basic case has the number 1, the first
extender number 2 up to the fourth extender with number 5. The positions of the boards (number B)
in the basic case are numbered from left to the right from 1 to 14. Positions in extender are
numbered from 1 to 12. First positions in the main case and in the extender is always reserved for
CPU board. At positions 0:1:2 to 0:1:4 can be only the boards 1x/2x/4x ISDN PRI (with or without
Zarlink) or Surf Ethernet. The position 0:1:5 is reserved for the Switch board which contains digital
switching array.
2.3 Synchronization
After connecting to the public or private ISDN network it is necessary to set up at least one port for
synchronization. In the menu HW – Synchronization there are two fields. The left one contains all
digital carriers, which can be ideally used for synchronization, it means all PRI and BRI carriers in TE
mode. The right field contains list of carriers, which are used for synchronization.
Figure 1 View of the menu for assigning synchronization ports and their priority.
Using buttons Right and Left you can move virtual ports from one field to another and ensure so
relevant synchronization sources for the PbX.
You can use the Up and Down buttons to shift the selected port, which changes the priority of the
selection of ports for synchronization – the port listed as first position has the highest priority (255).
Every other carrier has lower priority (254, 253, ..). After new assigment is carrier always placed to
the last position (position with the lowest priority). In the case of loss of synchronization a port with a
lower priority will be selected automatically. Upon restoring the synchronization it will return
automatically to the port with the highest priority.