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Description
Yeastar S20 IP PBX – 20 Users, 10 Concurrent Calls, Modular VoIP PBX, Unified Communications, SIP & GSM/4G SupportYeastar S20 IP PBX Key Product Specifications: Manufacturer: Yeastar Model: S20 Product Type: IP PBX Max Users: 20 Max Concurrent Calls: 10 Max FXS Ports: 4 Max FXO BRI Ports: 4 Max GSM 3G 4G Ports: 1 Max 4G Data Port: 1 VoIP Trunks: 20 Protocol Support: SIP (RFC3261), IAX2 Transport Protocols: UDP, TCP, TLS, SRTP Ethernet Interfaces: 2 10 100 Mbps Voicemail Storage: 10,000 minutes (expandable) T. 38 Fax: Supported Hot Standby: Supported Power Supply:
Yeastar S20 IP PBX Key Product Specifications:
- Manufacturer: Yeastar
- Model: S20
- Product Type: IP PBX
- Max Users: 20
- Max Concurrent Calls: 10
- Max FXS Ports: 4
- Max FXO/BRI Ports: 4
- Max GSM/3G/4G Ports: 1
- Max 4G Data Port: 1
- VoIP Trunks: 20
- Protocol Support: SIP (RFC3261), IAX2
- Transport Protocols: UDP, TCP, TLS, SRTP
- Ethernet Interfaces: 2 × 10/100 Mbps
- Voicemail Storage: 10,000 minutes (expandable)
- T.38 Fax: Supported
- Hot Standby: Supported
- Power Supply: DC 12V 1A
- Dimensions: 16 × 16 × 3 cm
- Weight: 0.3 kg
- Power Consumption: 1.8–10.6 W
- Mounting: Desktop & Wall-mount
- Operating Temperature: 0°C to 40°C
- Storage Temperature: -20°C to 65°C
Yeastar S20 IP PBX is a compact modular VoIP PBX designed for small businesses that need reliable unified communications at best price. Supporting up to 20 users and 10 concurrent calls, it integrates SIP, PSTN, ISDN BRI, and GSM/3G/4G connectivity into a flexible platform. With built-in Linkus UC apps, voicemail, IVR, call routing, conferencing, auto provisioning, and remote management, the S20 delivers a simple yet powerful communication system with low power consumption and no extra licensing fees.
Yeastar S20 IP PBX Key Product Features:
- Supports 20 users and 10 concurrent calls
- Built-in voicemail, IVR, call routing, and conferencing
- Supports SIP, PSTN, ISDN BRI, and GSM/3G/4G
- Integrated Linkus UC apps for mobile and desktop
- Auto provisioning for IP phones
- Internal firewall with TLS and SRTP security
- Expandable modular PBX design
- Remote management and multisite support
- Low power consumption and compact design
- No extra licensing fees or hidden costs
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
4.3 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 5
under desk laptop system
Color: Black, Size: 1.37" without hook
Reclaimed real desk space with this one. The mount holds the laptop securely underneath without any vibration or creaking and the installation required no drilling — clamped cleanly to the desk edge. The ventilation spacing is generous enough that thermals stay reasonable even under load. Works with a solid range of laptop sizes and the adjustment mechanism is easy to use. If your laptop spends most of its time docked this is the cleanest way to get it out of the way.
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Reviewed in the United States on March 25, 2026
★★★★★ 4
Works great, but pads are peeling.
Color: Black, Size: 1.37" without hook
Works for what I needed, which was to mount my work laptop to the side of my desk. However, the rubber pads started peeling the first day. I tried clamping them down overnight, but they still ended up peeling up. They haven't come off completely and are still working, though. I may have to glue them down.
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Reviewed in the United States on April 14, 2026
★★★★★ 5
Quality product.
Color: White, Size: 1.37" without hook
First of all it's made of metal so, I won't worry about accidentally breaking it and dropping my laptop. It came with adhesive rubber pads that fit inside the brackets, which is a nice touch for helping not to scratch up the laptop. It makes a huge difference to help declutter the desktop space.
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Reviewed in the United States on March 18, 2026
★★★★★ 5
Satisfied my need.
Color: Black, Size: 1.37" without hook
Easy to install and my laptop fits solidly. I have a work laptop, tower and my personal laptop. I hated how busy my home office desk looked. Moved my personal laptop underneath and made a big difference.
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Reviewed in the United States on March 28, 2026
★★★★★ 5
Perfect for under table/desk mounting
Color: Black, Size: 1.37" without hook
Just what I neeed! These work flawlessly to hide your laptop from taking up desk top space. These do just that! They come with the screws needed to mount them, and the little sticky pade to prevent scratches on your laptop. Perfect Product! A+++
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Reviewed in the United States on February 8, 2026