Configuration; Voice Menu Settings - Vocality V200 User Manual

5.20.2 Configuration

Figure 5-72 above shows one hub unit and three remotes. All arrows refer to audio
channels and not aggregates. Each remote is providing a separate transmit audio,
shown by the feed going back to the hub. (These are colour-coded red, blue and green
for Nodes 1, 2 and 3 respectively.) Each Node also receives the purple audio
transmission from Node 0. This topology is achieved by configuring a unique logical
broadcast channel in the destination field for each channel, which allows it to join a
broadcast multiplex, be extracted from a broadcast multiplex, or both.
You must ensure that all trib ports which are configured to receive data from a
broadcast highway are configured in the same way as the port which is generating the
data. For example if voice is being used, they must be configured with the same codec
and silence suppression setting. Broadcast tribs do not signal any information about the
type of the call, so codec negotiation cannot happen automatically.
Broadcast highway is the term used to describe an internal communications path
Broadcast highways may be used to carry trib data of most types, but is typically used
Each highway is numbered within a node.
Broadcast highways may be routed locally within a card, or across the backplane from
one slot to another, or across aggregates.
Typically a broadcast highway will have one data source and one or more data sink.
CAUTION: There is no signalling for broadcast highways. If multiple data sources
are configured then this can only be detected in the corruption of trib payload.
Under some circumstances, in a voice call environment, multiple data sources may
be permitted, provided that radio discipline is kept and accepting the risk of
exceeding configured bandwidth limits.

5.20.3 Voice menu settings

You need to assign all broadcast channels a destination which involves transmitting to
the broadcast highway BTXnnn (where nnn is a logical channel number from 0 to 127).
To receive this channel at a remote site, you need to use the corresponding code
BRXnnn to receive from the broadcast highway and transmit to line.
It is also possible to define the return path to the hub at the same time by specifying
the destination code as BTRttt,rrr at both ends where ttt specifies a logical TX code and
rrr specifies a logical RX code. To pick out the right channels at each end, ttt at one end
must match rrr at the other and vice versa.
Figure 5-73 shows the voice settings on node 0. Channel 1 is configured as four wire
and to transmit as BTX0. Channels 2 and 3 are set to receive BRX1 and BRX2 from
nodes 1 and 2 respectively. Channel 4 is set to transmit on broadcast channel 4 but
receive on broadcast channel 3.
Overview: Broadcast Highway
between trib ports.
for voice or serial data.
Vocality User Manual
User Manual for V200
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