OfficePhone BPS 4000 (오피스폰 BPS 4000) - Business Phone Systemmax 4000 user (Basic functions) Next-gen Communication Solution Bring your own SIP Trunk WFH: remote-enable teams Live Chat Team Messaging Video Conferencing Holiday & Business Hours Routing Ring Group & Welcome Message (Advanced functions) Call Queues Multi-level IVR Deskphone support Call & Chat Reporting Listen Whisper Barge In SMS/M..