Take some time to scan the market. You can start reviewing product specifications sheets, generally available via the Web, and eliminate products that don't match your requirements. You should base your selection on the picture quality and functionality you require in addition to basic video conferencing, such as applications and file sharing. In addition, be sure the product will run on the type of platform and communications you're able to support. Make certain the product meets your needs for multi-user conferences.
Some products only support two-way conferences, others can handle larger multipoint conferences.
You should also base your selection on the product's compliance with standards, such as H.320, and support policies Look for at least a one-year parts and labor warranty and unlimited free technical support. Many of the vendors offer 30-day trial periods. During the test period you should assess the installation, making sure it's smooth and easy to configure. While operating the product, do some usability tests. Make sure it's easy to navigate through the initiation and reception of video calls.