Video Terminal Adapter
The Video Terminal Adapter’s (VTA) role in video conferencing is to provide an
interface to legacy video-conferencing systems.This is accomplished by providing
a protocol translation between the legacy H.320 specification for video-conferencing
over ISDN and the IP telephony H.323 protocol.As we discussed in the
Introduction to Video-Conferencing, many mid- to large-sized organizations have
already invested in video-conferencing technology. Utilizing VTAs, these organizations
can protect their investment in legacy equipment while still enjoying the
benefits of the new IP-based video-conferencing solutions. Currently, Cisco
offers the IPVC 3530 platform for VTA functionality.