The PCS-B768 is an ISDN unit that allows the PCS-1/1P to
hold a videoconference over an ISDN line.
Product Features Connecting a PCS-B768 Unit to a PCS-1/1P Video
Communication System, it is possible to hold a videoconference compliant
with the ITU-T H.320 standard at up to 768 kb/s via an ISDN line.
Require up to 2 NT3 devices and 6 pairs of ISDN lines for
768K maximum capacity.