User guide

184 RealCT Direct API Developer Guide
Chapter 6: MVIP-95
Working with Computer Telephony Buses
The computer telephony (CT) bus provides a way to transfer
calls between telephony resources, even if those resources are
provided by different vendors. With voice, fax, video, and
automatic speech recognition cards connected in a single bus,
you can develop fully-integrated computer telephony
applications.
A CT bus is comprised of two main parts: the physical bus and
the switch block. The bus provides the physical connection
between boards. The switch block provides the mechanism for
switching data between telephony resources.
Only the RTNI series boards, RealBLOCs series boards, and
Vantage PCI boards provide a switch block and can make
physical connections between resources. RTNI series boards do
not provide VP resources, but they can switch data to VP
resources on other boards. The Vantage VPS, Vantage VRS, and
RDSP/xx000 boards do not provide switching capability. They
provide VP resources over the CT bus. The following table
outlines board properties:
Board Family MVIP 90 MVIP 95 MVIP 90 bus H.100 bus
RDSP x x
RTNI x x
Vantage PCIxxxx
RealBLOCs PCIxxxx