...In the early stages of VoIP adoption, the main concern for enterprise IT organizations was achieving consistently acceptablecall quality over their wide area networks. This issue has largely been resolved. In fact, there are now many infrastructure...
http://www.bitpipe.com/detail/RES/1212693163_283.html?asrc=RSS_BP_KABPNETHWSW
...In the early stages of VoIP adoption, the main concern for enterprise IT organizations was achieving consistently acceptablecall quality over their wide area networks. This issue has largely been resolved. In fact, there are now many infrastructure...
http://www.quintum.com/files/prod_lit/VoIP4EvolvingEnterprise-Final.pdf