CallVantageTap here to compare the top VoIP providersTap here to hide the top VoIP Providers
ATT's CallVantage Servicehttp://www.usa.att.com/callvantage/home.jsp
Service went live mid March 2004
- Originally used MGCP but all new TAs use SIP.
- Will work in front of or behind router.
Created by: jht2
, Last modification: Wed 01 of Jun, 2005 (06:21 UTC) by chaud
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