Related by context. Frequent words. (Click for all words.) 63 Global Crossing 57 Tata Communications 55 iBasis 55 Arbinet 55 Broadwing 53 VSNL 52 XO Communications 52 Net2Phone 52 Nortel Networks 51 Sonus 50 MCI 49 NeuStar 49 Nortel 49 AboveNet 48 BCE 48 Microcell 48 Allstream 48 WorldCom 47 UTStarcom 46 Tekelec 46 Covad 46 Veraz 46 Equant 46 Hutchison Telecom 46 telephony 46 Worldcom 46 Interoute 46 MTS Allstream 45 NII Holdings 45 VoIP 45 Avaya 45 Infonet 45 Intelsat 45 InfoVista 45 BellSouth 45 Ceragon 45 Cogeco Cable 45 Embratel 45 VocalTec 44 Starent 44 Time Warner Telecom 44 SunCom 44 Globalstar 44 Telenet 44 PanAmSat 44 SR Telecom 44 NTT Com 44 Alcatel 44 Telecom 44 PCCW 43 Netcom 43 TelCove 43 Alcatel Lucent 43 CLEC 43 TELUS 43 VOIP 43 Harris Stratex Networks 43 FairPoint 43 Telesat 43 Lucent 43 telecommunications 43 MPLS 43 Redback Networks 43 telecom 42 Comptel 42 China Netcom 42 Neutral Tandem 42 Aliant 42 GENBAND 42 deltathree 42 Afilias 42 Evolving Systems 42 PAETEC 42 Redback 42 Cogeco 42 VeriSign 42 ITC ^ DeltaCom 42 Syniverse 42 Aastra 42 softswitch 42 PSTN 42 SaskTel 42 Iusacell 42 Zhone 42 SS7 42 Tellabs 42 Lucent Technologies 42 Ciena 42 SunRocket 42 telco 42 Nokia Siemens Networks 42 Neotel 42 Skype 42 iPass 41 Vonage 41 3Com 41 Genuity 41 FiberNet 41 protocol VoIP 41 IP MPLS 41 Sonus Networks