User guide

146 RealCT Direct API Developer Guide
Chapter 5: MVIP-90
Boards with switching capability such as the RTNI or Vantage
PCI series boards are not assigned to a particular stream. These
boards can place or retrieve data on any stream or timeslot.
An application specifies the streams and timeslots to switch
data between resources. The RTNI or Vantage PCI switch block
then performs the switching.
For example, in a voice mail system, the application instructs
the MVIP switch block to route data from the stream and
timeslot associated to the inbound line where the call was
received to the stream and timeslot used by the voice processing
resource that plays the pre-recorded welcome message. Then, to
form a bidirectional connection, the application instructs the
switch block to make the reverse connection: from the VP
resource back to the line resource.