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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
4.7 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 1
My last Timex and why.
Color: Black/Gray/Digital, Color: Black/Gray/Digital
New edit. Upon further reflection, I’ve only had, a couple of exploratory years with Swatch excepted, Timex watches.
My first one was when my mother replaced the Chicita Banana “tickity tock” sticker with a real Timex wind up watch before my first Cub Scout camp.
In addition to many other Timex products, I’ve had these Ironman watches for the past 25+years. Usually the band wears out and can’t be replaced after three or four years. This particular watch fell apart less than six weeks old. It wasn’t hit by impact. It just came apart while I was driving down the road. I wonder if they’ve changed their manufacturing process. See photo for details. What is truly infuriating is that rather than replacing it, because it is truly a warranty issue, the told me to ship it to their offshore repair facility (which could take 3-5 months) and pay what might be half the value of the watch. Things happen, but the intentional friction they have created to avoid their obligations borders on malpractice and speaks to their indifference toward customer experience and subsequent lifetime value.
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Reviewed in the United States on September 4, 2025
★★★★★ 5
Good watch
Color: Black/Black/Digital
Bought for my 8 yo, durable
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Reviewed in the United States on October 19, 2025
★★★★★ 5
As expected
Color: Gray/Gray/Digital
Just an old school digital timex. Tried and true. Has both 12hr and 24hr function on the time setting. Has a standard stop watch and timer. The battery is great, just as it always is on a timex. Good water resistance and very easy to use. Overall very good watch for the price!
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Reviewed in the United States on July 6, 2025
★★★★★ 2
Can’t read numbers
Color: Gray/Gray/Digital
Numbers are too small to tread on a 44mm watch
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Reviewed in the United States on May 5, 2026
★★★★★ 5
W
Color: 2926 Gold Stainless Steel/Gold Dial
I absolutely love these watches! They are built like a tank. They can take a lot of abuse and still keep great time. I originally was going to buy just one to replace my old watch. Ended up buying several of them. Great gifts. The watches are beautiful and elegant, and I feel like a thief when I buy them because the price is so low I think its a typo. I have gotten several compliments on them when I wear them. I have busted up concrete and cleared heavy terrain ,cleaning areas out, wipe then off and they look Like I just took them out of the box. The only thing, and it's not a big deal to me.But the glow in the dark arms don't last long. They even give you the tool to adjust the wristband. Who does that🤣 The Quality of these watches are phenomenal BUY ONE! You won't be disappointed.
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Reviewed in the United States on March 22, 2026