Traditional PBX avg $68/user/mo VoIP avg $22/user/mo Avg savings 67% US local calls $0.015/min Intl calls (EU) $0.02/min Setup cost PBX $500–$2,000 VoIP setup $0–$50 Traditional PBX avg $68/user/mo VoIP avg $22/user/mo Avg savings 67% US local calls $0.015/min Intl calls (EU) $0.02/min Setup cost PBX $500–$2,000 VoIP setup $0–$50