H.323 Avaya ALGs

The H.323 standard is a legacy voice-over-IP (VoIP) protocol defined by the International Telecommunication Union (ITU-T). H.323 consists of a suite of protocols (such as H.225.0 and H.245) that are used for call signaling and call control for VoIP. The processes for configuring the H.323 standard Application Layer Gateway (ALG) and the proprietary Avaya H.323 ALG are the same. However, Avaya H.323 ALG has some special features.