call accounting, call management, telecom accounting, telecom cost management, phone accounting, call recording, phone recording, voice recording, recorder, digital recorder, voicexml, vxml, voice platfrom, call analysis, cost management, pbx accounting, telecom billing, phone billing, reduce telecom expense, vertical call accounting, call tracking, cdr, smdr, sip, voip, convergence, converged communication, ip-pbx, convergence applications, business productivity