IP Telephony Service Providers (ITSPs)

• IPxStream List of Internet Telephony Service Providers

• Pulver.com List of NextGen Telcos and & ITSPs

• Prof MacKie-Mason's Telecom Information Resources on the Internet - Internet Telephony

• Computer Telephony Portal List of Next Gen Telcos

• The IP Site List of IP Telcos

IP Telephony Hardware, Software, and Gateway Vendors

• Pulver.com List of PSTN/IP Gateway Resources

• Prof MacKie-Mason's Telecom Information Resources on the Internet - Internet Telephony

• The CTI Directory

• Computer Telephony Portal

IP Telephony Network Services Providers (including Clearinghouses)

• IPxStream List of Interconnectivity and Settlement Providers

• Pulver.com List of Internet Telephony eXchange Carriers

• Computer Telephony Portal

IP Fax Service Providers

• IPxStream List of Internet Fax Service Providers (IFSPs)

Bandwidth, Minutes, Termination Exchanges

• IPxStream/Gecko Termination SHoP

• Pulver.com Bandwidth/Minutes Brokering List