This can be said of almost every single video implementation ever. Nearly every single one utilizes H.323, SIP, RTP, H.2XX codecs, NAT traversal (ICE, STUN, et

This can be said of almost every single video implementation ever. Nearly every single one utilizes H.323, SIP, RTP, H.2XX codecs, NAT traversal (ICE, STUN, etc), SDP, ISDN, etc. Each one of those protocols has many optional characteristics and properties that don't operate together unless they're planned or someone has created the super-stack which is fully compliant with every deviation from the specification. Even then, many of the specifications aren't truly specifications (SIP), and even some of the specifications have portions for customization (SIP) that don't require adherence to specification (recommendation). This literally means nothing other than you could probably reverse engineer it and create something that would work with it. Until they change it.