AT&T Certifies Avaya and Cisco Gear for its VoIP Service

AT&T Labs has certified Avaya's IP Telephony servers, gateways and MultiVantage software for interoperability with the AT&T network to make the Avaya IP Telephony solution compatible with AT&T's suite of VoIP services. Separately, AT&T Labs certified interoperability between Cisco IP Telephony solutions enabled by AVVID (Architecture for Voice, Video and Integrated Data) with the AT&T network and AT&T's suite of VoIP services. AT&T's VoIP services include interconnection over managed ATM, frame relay, IP, and global on-net/off-net calling. AT&T said its VoIP services would also continue to support PBX systems based on TDM.
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