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- USA
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Ships within 48 hours · Estimated delivery Jul 11 - Jul 16
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Description
Grandstream UCM6304 Unified Communication PBX with 4 FXS & 4 FXO PortsEmpower Your Business with a Unified Communications Hub The Grandstream UCM6304 is a powerful and scalable IP PBX appliance designed to be the central hub of your business communication network. This enterprise grade solution unifies all your communication channels, including voice, video calling, video conferencing, web meetings, and more, onto a single, manageable platform. With support for up to 2,000 users and 300 concurrent calls, the UCM6304 is
Empower Your Business with a Unified Communications Hub
The Grandstream UCM6304 is a powerful and scalable IP PBX appliance designed to be the central hub of your business communication network. This enterprise-grade solution unifies all your communication channels, including voice, video calling, video conferencing, web meetings, and more, onto a single, manageable platform. With support for up to 2,000 users and 300 concurrent calls, the UCM6304 is built to handle the demands of a growing business without requiring any licensing fees. Its robust suite of features provides a comprehensive communication and collaboration solution for both on-site and remote teams.
Key Features and Benefits:
- All-in-One Communication Platform: Integrates voice, video, data, and mobility to streamline your business communications.
- High Capacity and Performance: Supports up to 2,000 users and 300 concurrent calls, with up to 200 using SRTP encryption.
- Built-in Conferencing: Host video conferences with up to 40 participants and audio conferences with up to 200 participants.
- Flexible Connectivity: Features 4 FXO ports for PSTN lines and 4 FXS ports for analog devices, ensuring compatibility with traditional telephony.
- Advanced Security: Your communications are protected by a secure boot, unique certificates, and random default passwords.
- Remote Collaboration: The Wave app for desktop and mobile allows your team to stay connected and collaborate from anywhere.
- Effortless Management: Can be managed through the Grandstream Device Management System (GDMS) for cloud-based setup and monitoring.
Technical Specifications
| Category | Specification |
|---|---|
| Analog Ports | 4 x RJ11 FXS Ports, 4 x RJ11 FXO Ports (with lifeline capability) |
| Network Interfaces | 3 x Self-adaptive Gigabit ports with integrated PoE+ and NAT router |
| Peripheral Ports | 2 x USB 3.0, 1 x SD card interface |
| Capacity | Users: 2,000 Concurrent Calls: 300 Concurrent SRTP Calls: 200 |
| Conferencing | Video Conference: Up to 4 rooms and 40 parties (1080p) Voice Conference: Up to 200 parties |
| Voice-over-Packet Capabilities | LEC with NLP, 128ms-tail-length echo cancellation, Dynamic Jitter Buffer, Modem detection, Auto-switch to G.711 |
| Voice and Fax Codecs | G.711µ/a, G.722, G.723.1, G.726, G.729A/B, iLBC, Opus |
| Video Codecs | H.264, H.263, H.263+, H.265, VP8 |
| Display | 320x240 color LCD with touch screen |
| Provisioning and Control | GDMS for cloud setup, management, and monitoring. Web GUI for local control. |
| Security | Secure boot, unique certificate, random default password, SRTP, TLS, HTTPS. |
| Power | Universal Power Supply; Input: 100 ~ 240VAC, 50/60Hz; Output: DC 12V, 2A |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 1115 reviews
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Product Reviews
★★★★★ 5
My favorite sunscreen
Size: 5 Fl Oz (Pack of 1)
The BEST sunscreen I have tried. I LOVE this unscented Coola. It goes on smooth and doesn’t feel sticky at all, you will forget you have it on. It truly is unscented and so light. It’s also effective protection from the sun.
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Reviewed in the United States on August 31, 2025
★★★★★ 5
Great sunscreen
Size: 5 Fl Oz (Pack of 1)
I love this sunscreen and I even use it on my face. Good value in a large size container.
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Reviewed in the United States on April 21, 2026
★★★★★ 5
One of the few body sunscreens that doesn't trigger my sensory issues
Size: 5 Fl Oz (Pack of 1)
I have sensory sensitivities, so wearing sunscreen is usually a pretty unpleasant experience for me. I can't stand heavy textures, greasy finishes, or that sticky sunscreen feeling that seems to sit on top of the skin all day. I'm also bothered by mineral and matte sunscreens that dry my skin out. It's very hard to find a sunscreen as genuinely comfortable as this one is.
I bought the Coola Sunblock Body Lotion because several reviews mentioned that it actually feels like a regular lotion once applied, but I honestly assumed it still wouldn't work for me.
I was genuinely shocked the first time I used this. The texture feels silky and lightweight, absorbs quickly, and leaves my skin feeling soft rather than coated or oily. It really does wear more like a comfortable body lotion than a traditional sunscreen, and I don't notice any residue or oily feel at all, which is amazing.
I also love that it's fragrance-free, which makes it even easier for me to tolerate, especially with sensitive skin and sensory issues.
Coola Sunblock Body Lotion is one of the very few body sunscreens I've tried that I actually enjoy wearing, and it works perfectly. I am very fair and burn easily, but I had no burning or redness on my first outside day of the summer while wearing this.
It's sunscreen that works and that I can actually wear with zero discomfort. Amazing.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Love the quality!
Size: 5 Fl Oz (Pack of 1)
Im 63, with fair and sensitive skin. I love this high strength sunscreen that isn't greasy and doesn't have added ingredients and perfumes that bother me and make me break out.
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Reviewed in the United States on February 7, 2026
★★★★★ 5
Expensive, but worth it
Size: 5 Fl Oz (Pack of 1)
What's the best sunscreen? The sunscreen you'll use consistently. I like Coola because it feels like moisturizer, not sticky gross sunscreen. It's pricey, but I think you get what you pay for with Coola.
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Reviewed in the United States on August 30, 2025