--- product_id: 531304943 title: "Grandstream UCM6304 IP PBX | 4 FXO Ports, 4 FXS Ports | Desktop/Rack-Mount" brand: "grandstream" price: "$1448.28" currency: USD in_stock: true reviews_count: 1 category: "Grandstream" url: https://www.desertcart.us/products/531304943-grandstream-ucm6304-ip-pbx-4-fxo-ports-4-fxs-ports store_origin: US region: United States of America --- # 3x Gigabit PoE+ network ports 450 concurrent calls capacity Advanced multi-layer security Grandstream UCM6304 IP PBX | 4 FXO Ports, 4 FXS Ports | Desktop/Rack-Mount **Brand:** grandstream **Price:** $1448.28 **Availability:** ✅ In Stock ## Summary > 📞 Power your enterprise calls with rock-solid security and seamless scalability! ## Quick Answers - **What is this?** Grandstream UCM6304 IP PBX | 4 FXO Ports, 4 FXS Ports | Desktop/Rack-Mount by grandstream - **How much does it cost?** $1448.28 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/531304943-grandstream-ucm6304-ip-pbx-4-fxo-ports-4-fxs-ports) ## Best For - grandstream enthusiasts ## Why This Product - Trusted grandstream brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Unified Collaboration Hub:** Built-in conferencing and meetings platform accessible via desktop, mobile Wave app, and SIP endpoints keeps your team connected anywhere. - • **Rock-Solid Security by Design:** Secure boot, unique certificates, and randomized default passwords protect your calls and data from day one. - • **Effortless Remote Connectivity:** Automated NAT traversal and integrated PoE+ ports ensure smooth, secure remote access and power over a single cable. - • **Plug & Play Endpoint Provisioning:** Zero-configuration setup for Grandstream SIP devices means faster deployment and less downtime. - • **Seamless Scalability for Growing Teams:** Supports up to 3000 users and 450 simultaneous calls to future-proof your business communications. ## Overview The Grandstream UCM6304 IP PBX is a robust, feature-rich unified communication platform designed for professional environments. Supporting up to 3000 users and 450 concurrent calls, it integrates voice, video, conferencing, and security into one scalable solution. With zero-touch provisioning, advanced security protocols, and versatile connectivity options including PoE+ and automated NAT traversal, it empowers businesses to streamline communications while safeguarding data. Compatible with multiple devices and cloud management tools, it’s the smart choice for modern, agile teams. ## Description UCM6304Unified Communication & Collaboration Solution This series of IP PBXs provide a platform that unifies all business communication on one centralized network, including voice, video calling, video conferencing, video surveillance, web meetings, data, analytics, mobility, facility access, intercoms and more. Review: Feature rich at a unbelievably low price point - Grandstream UCM is extremely feature rich VoIP/ SIP device providing telecommunication services to business’ at incredibly low cost. Configuration is easy enough if you have knowledge of telephony and data’s networking. ## Features - Supports up to 3000 users and up to 450 concurrent calls - Zero configuration provisioning of Grandstream SIP endpoints - Built-in conferencing & meetings platform; supports desktop, Wave app, and SIP endpoints - Wave for Android, iOS, Chrome and Firefox browsers allows communication with all UCM6300 users & solutions - API available for third-party integrations, including CRM and PMS platforms - Advanced security protection with secure boot, unique certificate and random default password to protect calls and accounts - Three Gigabit auto-sensing RJ45 network ports with integrated PoE+ and support NAT router - Automated NAT firewall traversal service facilitates secure remote connections - Supports Full-Band Opus voice codec and H.264/H.263/ H.263+/H.265/VP8 video codec, jitter resilience up to 50% packet loss - Compatible with GDMS for cloud setup, management and monitoring ## Technical Specifications | Specification | Value | |---------------|-------| | Best Sellers Rank | #343,505 in Office Products ( See Top 100 in Office Products ) #68 in PBX Phones & Systems | | Customer Reviews | 5.0 out of 5 stars 7 Reviews | ## Images ![Grandstream UCM6304 IP PBX | 4 FXO Ports, 4 FXS Ports | Desktop/Rack-Mount - Image 1](https://m.media-amazon.com/images/I/41VNrXyTc9L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Feature rich at a unbelievably low price point *by G***. on October 6, 2025* Grandstream UCM is extremely feature rich VoIP/ SIP device providing telecommunication services to business’ at incredibly low cost. Configuration is easy enough if you have knowledge of telephony and data’s networking. ## Frequently Bought Together - Grandstream UCM6304 IP PBX | 4 FXO Ports, 4 FXS Ports | Desktop/Rack-Mount - Grandstream GRP2616 IP Phone | 6 Lines, 6 SIP Accounts | 4.3-Inch Color Display | Wi-Fi 5 | Dual-port Gigabit Ethernet with Integrated PoE --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/531304943-grandstream-ucm6304-ip-pbx-4-fxo-ports-4-fxs-ports](https://www.desertcart.us/products/531304943-grandstream-ucm6304-ip-pbx-4-fxo-ports-4-fxs-ports) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-15*