S50, Telecom, PBX, Yeastar, 50 Users, 25 Concurrent Calls, 1U 19-inch Rackmount
19-inch 1U rackmount VoIP PBX system supporting up to 50 users and 25 concurrent calls with 4 modular slots and 50 SIP trunks.
Product Overview
The Yeastar S50 is a full-featured, rack-mountable IP PBX system engineered for businesses with up to 50 users and 25 concurrent calls. Housed in a durable 1U 19-inch steel chassis with integrated AC power, it is the standard workhorse for small-to-medium enterprise telephony deployments. With 4 onboard telephony module slots, the S50 accommodates up to 8 analog FXS extensions, 8 PSTN FXO lines, 8 ISDN BRI channels, or up to 4 GSM/3G/4G mobile channels. It combines advanced call routing, automated attendants, call recording, and App Center add-ons (including Auto Provisioning, Hotel App, and LDAP) into one unified system.
Why Buy This Product
Rack-Ready Commercial Chassis
Built for standard 19-inch equipment racks with internal AC power supply and included rack ears.
50 SIP Trunks & 25 Concurrent Calls
Provides high call concurrency for busy offices connecting multiple ITSP voice carriers.
App Center Modularity
Install independent apps like Hotel Module, Billing, Auto Provisioning, and LDAP Server on demand.
Best for These Applications
Medium Businesses (20-50 users)
Enterprises requiring a centralized rackmount PBX with high reliability and zero recurring license fees.
Medical Centers & Clinics
Healthcare facilities managing patient inquiries across queues with integrated call recording.
Commercial Properties
Offices needing a combination of analog desk phones and SIP trunking.
Key Advantages
- Full-Size SD Card Slot:Accepts high-capacity SD cards up to 256GB for extensive continuous call recording archives.
- Dual Gigabit Networking:Dual 10/100/1000 Mbps ports allow secure network segregation between VoIP traffic and corporate LAN.
- Auto Provisioning Engine:Quickly discovers and configures Yealink, Fanvil, Snom, Cisco, and Grandstream IP phones automatically.
Frequently Asked Questions
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Weight | 1.48 |
| Shipping Weight | 2.2 |
| User Capacity | 50 |
| Max Ip Users | 50 |
| Concurrent Calls | 25 |
| Analog Extensions | 8 |
| Co Lines | 8 |
| Bri Ports | 8 |
| Gsm Channels | 4 |
| Cellular Ports | 4 |
| Expansion Slots | 4 |
| Sip Trunks | 50 |
| Voip Channels | 25 |
| Voicemail Channels | 8 |
| Voicemail Storage | 5,000 minutes (built-in internal flash) |
| Audio Conferencing | Integrated Multi-Party Conference |
| Call Detail Records | Built-in CDR storage with auto-backup |
| System Architecture | 1U Rackmount Embedded Hybrid IP PBX |
| Power Supply | 100-240V AC 50/60Hz, 0.6A Internal Power Supply |
| Power Consumption | 2.1 - 18.5W |
| Mounting Form Factor | 1U 19-inch Rackmount |
| Dimensions | 340 x 210 x 44 mm |
| Weight | 1.48 kg |
| Operating Temperature | 0°C to 40°C (32°F to 104°F) |
| Ethernet Interfaces | 2 x 10/100/1000 Mbps Gigabit Ports (LAN/WAN) |
| Sd Card Slot | 1 x SD Card Slot (up to 256GB) |
| Voip Protocols | SIP (RFC3261), IAX2, TLS, SRTP, IPv4, IPv6 |
| Audio Codecs | G.711a, G.711u, G.722 (HD Voice), G.726, G.729A, GSM, iLBC, Opus |
| Certifications | CE, FCC, RoHS |
| Stock | 4 |
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