Voice & Video Calling platforms deliver the communications infrastructure for sales teams — cloud-based phone systems, video conferencing, and unified communications that connect reps with prospects and customers. Core capabilities include cloud PBX and VoIP calling, video conferencing and virtual meetings, screen sharing, call routing and IVR, voicemail and transcription, team messaging, and integration with CRM and calendar systems. The category spans unified communications platforms (Zoom, Microsoft Teams, RingCentral, 8x8, Vonage) and sales-focused communications tools (Dialpad, GoTo) that bundle calling with conversation intelligence.