Dialogic HDSI-PCI/HDSIPCI Station Interface Board 85-0550-123 Rev.A 

Circa 1999

The HDSI products consist of a PCI board with H.100 compliant CT Bus connectivity using 
a Station Interface Box (SIB). The CT Bus provides switching between trunks and stations 
and also allows expansion for additional Dialogic network and resource boards. 
Utilizing just one computer chassis slot, this HDSI solution can support up to 120 stations 
with tone detection and generation, and FSK Caller ID transmission.

Untested but pulled from a working system