Can I use a sim card in this model

This model does not support the use of a SIM card. You would need an upstream router with SIM support to use a SIM card FTTech

Any grand stream models to recommend for 50 users only

Grandstream specs for the UCM6301 PBX show: Users: 500 Concurrent calls (G.711): 75 Max concurrent SRTP calls (G.711): 50 This PBX should work for 50 users without any issues. Thanks, FTTech

.I have 6 incoming phone lines but this system has 2 fxs ports could use any adapter or card on this device to have my 6 land phone lines attached ?

in case you need attach 8 phones to your system, you need to find the fxs adaters, most of them 2 ports for 8 phones you need 4 adapters, some come with 8 ports.

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Grandstream UCM6301 IP PBX | 1 FXO Port, 1 FXS Port | Desktop/Wall-Mount

Grandstream UCM6301 IP PBX | 1 FXO Port, 1 FXS Port | Desktop/Wall-Mount

Product ID: 354081156

👥Up to 3000 users capacity

📞Supports 450 concurrent calls

🔒Advanced multi-layer security

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VT91727

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Description

📡 Power your enterprise communications with the ultimate all-in-one IP PBX solution!

ROCK SOLID SECURITY - Secure boot, unique certificates, and randomized passwords protect your communications end-to-end.
SEAMLESS SCALABILITY - Effortlessly supports up to 3000 users and 450 simultaneous calls—grow without limits.
CLOUD READY MANAGEMENT - GDMS cloud platform and API integrations streamline remote setup, monitoring, and CRM connectivity.
PLUG PLAY SIMPLICITY - Zero-configuration provisioning for Grandstream SIP endpoints means faster setup, less hassle.
UNIFIED COLLABORATION HUB - Built-in conferencing and Wave app integration keep your team connected anywhere, anytime.

The Grandstream UCM6301 IP PBX is a high-performance unified communications platform designed for professional environments. Supporting up to 3000 users and 450 concurrent calls, it integrates voice, video, conferencing, and collaboration tools into a single secure system. Featuring zero-configuration provisioning, advanced security protocols, and cloud-based management via GDMS, it ensures scalable, reliable, and seamless communication for modern businesses.

Specifications

Best Sellers Rank	#92,963 in Office Products ( See Top 100 in Office Products ) #2 in PBX Phones & Systems
Customer Reviews	4.4 out of 5 stars 82 Reviews

Reviews

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7.11.2025

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25.04.2025

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9.11.2025

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31.05.2025

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5.07.2023

D**.

28.03.2024

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11.12.2025

M**T

28.01.2026

S**R

19.12.2024

I**S

25.06.2024

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VT91727

Duties & taxes included

In stock

Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Vanuatu.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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