Beyond SIP: How Cloud Softphone Unlocks BroadSoft XSI for Operators
June 26, 2026 • 6 min read
SIP gets you calls. BroadWorks (formerly BroadSoft) XSI gets you enterprise directory, visual voicemail, server-synced call history, and in-app feature control. Cloud Softphone implements it natively as a plug-and-play UC-One replacement.