Designed for large service providers such as Post, Telephone, and Telegraphs (PTTs), regional bell operating companies (RBOCs), inter-exchange carriers (IXCs), and large Internet telephony service providers (ITSPs), AccessPath-VS3 supports up to 84 ISDN PRI/T1/E1s in a single system. High availability of 99.99998% with no single point-of-failure, Network Equipment-Building System (NEBS) Level 3 compliance, and a user-friendly web based configuration tool facilitate quick deployment of Carrier-Class toll-quality voice and fax services. Dynamic, on-the-fly, support of a variety of codecs including G.711, G.729, and G.723.1, on any port in the AccessPath-VS3, as well as H.323 compliance, facilitate comprehensive phone-to-phone, PC-to-phone, and PC-to-PC suites of packet telephony solutions, for large and geographically distributed voice over IP (VoIP) networks.Major AccessPath-VS3 packet telephony applications for phone-to-phone, PC-to-phone, PC-to-PC, real-time fax-to-fax, and PC-phone to PSTN communication, include toll bypass, packet telephony wholesale services, universally accessible voice- and fax-mail services, PSTN voice- and fax-traffic offload onto data networks, and more. Enhanced with VCO/4K's1 service point capability, AccessPath-VS3 can deliver today additional intelligent services such as pre- and post-paid calling card, 800 call redirect, voice activated dialing, and more.