Vocality V200 User Manual page 32

Vocality User Manual
User Manual for V200
Valid for V08_08.02 or V08_48.02
A Slot is a number which maps a card in a physical bay to a logical slot via the Slot
Management menu and Channel is a number which indicates the particular port within
that logical slot. By default Bay A is mapped to Slot 0, Bay B is mapped to Slot 1 and so
on. See the table below:
Bay
A
B
C
D
E
F
G
H
I
J
The configuration menus list local channels only, so they just use the slot and channel
numbers, such as 0:1 and 0:2.
So why use bays as well as slots? Bays are used as a means of identifying the physical
position of a card within the chassis, whereas the slot number is purely a logical identity
used to define a card's place in the addressing system. This allows a CPU card in Bay A
to be defined as Slot 0, with its backup CPU card in Bay B, which is defined as the 'Slot 0
backup card' and which is configured identically to the primary card. In this example Bay
C could then house Slot 1 and so on. In fact, the only rule is that Bay A must house the
Slot 0 primary card – all other logical slots may be located in any other physical Bay, in
any order.
Channel is a number which means the particular channel number within a slot. So, for
example, the DB15HD connector labelled 'DATA' on the Standard CPU card in Bay A
(Slot 0) Node 3 would be indicated as 3:0:0, or voice channel 4 on same card would
be called 3:0:4.
The routing of voice channels is often done dynamically by decoding the DTMF dialling
digits. In this case, the destination field is simply set to AUTO and the route is either
directly decoded from the dialled digits or looked up in the internal directory. So, for
example, if the directory number for 23:1:7 is 820, then when the number 820 is
dialled from anywhere in the network, the telephone on channel 7 of the card in Slot 1
on Node 23 will ring. (This assumes the directory entry is configured on all units in the
network.)
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Default Slot mapping
0
1
2
3
4
5
6
7
8/PSU2
PSU1
Table 4-1 Default slot mapping for each bay