User guide

August 2001 145
Working with MVIP-90 Data Streams
Working with MVIP-90 Data Streams
Understanding MVIP-90 Architecture
The MVIP-90 bus supports eight bidirectional 2.048 Mb/s
streams for a total of 16 data streams, as shown in Figure 24.
These streams carry data to and from MVIP resources. Each
MVIP stream has 32 64-Kb/s time division multiplexed slots,
each of which supports a single resource (32 slots x 64 Kb/s/slot
= 2.048 Mb/s). Each slot within a specific stream is called a
timeslot.
Figure 24. Data Streams in an MVIP-90 Bus
Each 2.048 Mb/s stream supports all channels on a voice
processing resource card, one resource per timeslot. You set
which stream a board uses through either hardware or
software, depending on the board. The single stream serves as a
data highway between the network interface and resource
board assigned to that stream. Timeslots in the stream are like
mailboxes, carrying information to the resource mapped to that
address. See Mapping MVIP-90 Resources on page 155 for more
information about specifying MVIP streams and timeslots.
A
A
32 Timeslots
8 Streams