Call Routing; Dynamic Bandwidth Allocation (Dba); Configuration Information Storage - Vocality V200 User Manual

network. The card is able to compress up to 30 voice calls over the satellite link, or 60 by
the addition of an extra Digital Voice module.
2.2.2

Call Routing

The V200 architecture supports point-to-multipoint topologies with programmable
circuit routing. Ultimately, system topologies may be designed ranging from simple
point-to-point applications for mixed voice/data services to full-mesh point-to-
multipoint networks with dynamic call routing and redundant trunk routes.
In order to assign the most efficient route for packets to reach the destination, hubs
require knowledge of the available aggregate routes to adjacent nodes in the network,
together with the current bandwidth loading on each trunk port. A Routing menu tells
the V200 which aggregate to use to reach the destination port.
Each tributary channel in the network is assigned a numeric code according to its
chassis, slot and channel number, with destinations being specified for each tributary in
terms of the code of the destination port.
2.2.3

Dynamic Bandwidth Allocation (DBA)

Your V200 can be programmed to allocate bandwidth dynamically between resources.
Voice services are granted dedicated bandwidth for the duration of the call or
transmission, with the remaining bandwidth optionally transferred to the data ports.
When the call ends, the bandwidth associated with it is returned to a pool of dynamic
bandwidth available. All synchronous data channels configured with a DBA clock source
are assigned to this pool, which is distributed between streams in proportion to their bit
rate. Your V200 smoothly adjusts the clock speeds on all DBA ports whenever there is a
change.
IP data and asynchronous data ports (including the remote management function)
automatically use the DBA pool. Channels are granted bandwidth from the pool in
proportion to their bit rate. When they become inactive and data stops flowing, the
internal connection reduces speed to a nominal 2400bps and the rest of the bandwidth
is returned to the pool. The DBA pool has a lower priority than the voice or fixed
synchronous data channels and will only contain any bandwidth if these types of
channel are limited by careful configuration.
The DBA function can be invoked independently for transmit and receive, with the V200
router constantly assessing the optimum conditions even across complex networks. In
this way, data networks can make efficient use of bandwidth at all times.
2.2.4

Configuration Information Storage

The V200 stores the configuration information in two parts: numbered configuration
stores and system configuration. This stored information is combined to provide a
complete configuration. Most of the configuration information is stored in the
numbered configuration stores - see Section 0.1 Configurations menu - Professional
for more information. However, some parameters are stored in the system configuration
instead and this data is not affected when the numbered configuration stores are
changed. Below is the list of menus which store parameters in the system configuration
only:
System
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Vocality User Manual
User Manual for V200
Valid for V08_08.02 or V08_48.02
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