Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 13 - Jul 18
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For Your Every Summer RSVP, with Code: SUMMER15
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 1753 reviews
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Product Reviews
★★★★★ 3
Face sun screen
Size: 2.5 Fl Oz (Pack of 1)
This works well as far as UV protection although it does not rub in very well. It leaves your face white.
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Reviewed in the United States on April 1, 2026
★★★★★ 5
The best for sensitive skin and sensitive noses
Style: SPF 50, Size: 5 Fl Oz (Pack of 1)
This is the absolute best sunscreen I have found for my super reactive sensitive skin. I have never had any issues with this sunscreen and it prevents sunburn well. I am also super sensitive to smells and this doesn’t smell like anything to me. It gives a really pretty glow to your skin as an added bonus.
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Reviewed in the United States on April 13, 2026
★★★★★ 5
Don't leave home without it!
Style: SPF 50, Size: 10 Fl Oz (Pack of 1)
This sunscreen has been a lifesaver for me. I'm an avid kayaker, have a very fair complexion and hate wearing hats, so I'd be toast (literally) without this. I'm also now allergic to fragrance and several commonly used preservatives, so to find that this sunscreen has no fragrance and none of the suspect additives was a joy. It goes on lightly, rubs in easily and seems to really hold up protecting my skin for 2-3 hour trips on the lake. I never leave home without it. The only drawback I have is that it's sometimes cumbersome, or difficult to get the top to line up correctly in order to spray it and it can be unwieldy trying to do this with one hand. I haven't found anything better, and really appreciate that it's available and not at an outrageous price either.
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Reviewed in the United States on March 13, 2026
★★★★★ 1
spray top lids fail after a few uses
Style: SPF 50, Size: 10 Fl Oz (Pack of 1)
This sunscreen is awesome. It stays on for a long time, even when swimming. It has almost no odor, which is great if you don't want to walk around with that summer sun screen smell. The reason I am giving this only one star is because of the canister. The spray top lid is very hard to press, and only works a few times before completely jamming, rendering the product useless. This is a huge problem if you are taking it on a river float, or camping where you can't just run out to the store and get another one if it stops working. I love this sunscreen and I really wish I could make it my summer go to, but have had so many of the lids malfunction that I will never buy this product again. It is expensive for sunscreen. They should figure out their packaging.
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Reviewed in the United States on August 2, 2025
★★★★★ 5
a fave
Style: SPF 50, Size: 5 Fl Oz (Pack of 1)
Disappears into skin quickly, feels like nothing, looks like nothing (no white residue, streaks or discoloration). The fragrance free truly is. I reapply after a couple of hours or prolonged time in salt water even though I don't _feel_ like I need to (I'm not naturally pale) and have not had any burns since I started using Alba products, whereas before, I got occasional burns even from the better, former favorite, brands. I love this brand and the products are prominent on my subscribe and save lists.
Once in a blue moon, the spray lid sticks and the can goes in the trash. BUT this happens once in a blue moon with just about every brand I've tried.
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Reviewed in the United States on July 6, 2023