Buy the Yeastar P550 VoIP IP‑PBX in Pakistan. Supports up to 50 users and 25 concurrent calls, offering advanced VoIP features, voicemail, conferencing, and robust call routing. https://ar.com.pk/yeastar-products/yeastar-p550-voip-pbx-pakistan-for-up-to-50-users-25-concurrent-calls/