


Yeastar S-Series S300 IP PBX
Enterprise-Grade Modular VoIP PBX for 300–500 Users with Full UC Features and Expandability.
Yeastar S-Series S300 IP PBX is a robust, enterprise-grade VoIP system that supports up to 300 users by default and can be expanded to accommodate up to 500 users and 120 concurrent calls. Designed with a modular and scalable architecture, it supports a wide range of connectivity options including FXS, FXO, BRI, GSM, 3G/4G, and E1/T1/J1 interfaces. The S300 integrates advanced unified communications features via Linkus UC clients, comprehensive remote management, and rich business communication functions like IVR, call queues, voicemail, auto-provisioning, and call recording. Engineered for performance, security, and growth, it’s the ideal IP PBX for growing enterprises.
Key Features:
- Supports 300 users (expandable to 500) and up to 120 concurrent calls
- Modular slots for FXS, FXO, BRI, GSM, 3G, 4G, and E1/T1/J1
- Unified communications with Linkus desktop and mobile clients
- Auto provisioning and built-in voicemail
- Call queues, IVR, conferencing, call recording
- Advanced firewall with SRTP and TLS encryption
- Remote system monitoring and centralized management
- Expandable storage via SD card and 2.5″ SATA HDD
- Desktop or 1U rackmount installation
Product Specifications:
- Model: Yeastar S300
- Max Users: 300 (expandable to 500)
- Max Concurrent Calls: 60 (up to 120*)
- Max FXS Ports: 24
- Max FXO/BRI Ports: 24
- Max GSM/3G/4G Ports: 6
- Max 4G Data Port: 1
- Max E1/T1/J1 Ports: 3
- VoIP Trunks: 100
- Supported Protocols: SIP (RFC3261), IAX2
- Transport Protocols: UDP, TCP, TLS, SRTP
- Audio Codecs: G.711 A/U, G.722, G.726, G.729A, GSM, Speex, ADPCM, iLBC
- Video Codecs: H.263, H.263P, H.264, MPEG4
- DTMF Support: In-band, RFC4733, RFC2833, SIP INFO
- Ethernet Ports: 2 × 10/100/1000 Mbps
- IP Services: Static IP, DHCP, VPN, Firewall, VLAN, DDNS, PPPoE, QoS, Static NAT, STUN
- Voicemail Storage: 10,000 minutes (expandable)
- Firewall: Yes
- Fax Support: T.38
- Hot Standby: Yes
- App Center: Linkus, Auto Provisioning, LDAP, Conference Panel, VPN Server, Billing App, Hotel App
- External Storage: SD Card and 2.5″ SATA HDD
- USB Ports: 1
- Power Supply: AC 100–240V 50/60Hz 1.8A max
- Dimensions (L × W × H): 44 × 25.2 × 4.4 cm
- Weight: 2.6 kg
- Power Consumption: 6.2–59.1W
- Mounting: 1U Rackmount
- Operating Temperature: 0°C to 40°C
- Storage Temperature: -20°C to 65°C
Send Inquiry
Please fill in the information below, or email us at info@dms-ksa.com and a dedicated DMS expert will contact you soon.