Yeastar S300 VoIP PBX Phone System

The Yeastar S300 VoIP PBX phone system is an enterprise-ready communication solution designed to meet the evolving needs of medium to large businesses. Supporting 300 users out of the box and expandable to 500, the S300 delivers a powerful, flexible, and secure IP PBX platform. With support for up to 120 concurrent calls, modular telephony interface options, and advanced VoIP features, the S300 offers unmatched scalability and performance. Built on Asterisk 13 and powered by the latest processor technology, it ensures high availability and reliability with minimal maintenance.

Product Features

Enterprise-class scalability and performance
Supports 300 users by default, expandable to 500 users with DSP modules. Handles 60 concurrent calls out of the box, expandable to 120 with up to two D30 modules.

Modular interface customization
Add up to 3 expansion cards to mix and match telephony interfaces, including:

• Up to 24 analog FXS/FXO ports
• Up to 24 ISDN BRI ports
• Up to 6 GSM/3G/4G ports
• Up to 3 E1/T1/PRI ports

Efficient call handling and productivity tools
Includes built-in call recording, auto attendant (IVR), call transfer, paging/intercom, voicemail-to-email, music on hold, and mobility extension features.

Unified management with intuitive control
Easily managed via web-based UI with point-and-click configuration. Auto-detect, auto-provisioning, and graphical dashboard make deployment and updates seamless.

Remote connectivity and multi-site support
Ideal for connecting remote users or branch offices. Secure remote access, SIP forking, and support for mobile and desktop clients improve workforce mobility and collaboration.

Low operational cost and no licensing fees
Enjoy free lifetime firmware and software upgrades, no per-user licensing fees, and low power consumption from 6.2 to 59.1 watts.

App Center and API integrations
Expand functionality with Yeastar add-ons like LDAP, auto provisioning, and external APIs for integration with CRMs, hotel PMS, and business systems.

Product Specifications

• Base user capacity: 300
• Maximum users (with DSP module): 500
• Base concurrent calls: 60
• Maximum concurrent calls: 120
• VoIP trunks supported: 300
• Expandable interface options:
  • Up to 24 FXS/FXO ports
  • Up to 24 ISDN BRI ports
  • Up to 6 GSM/3G/4G ports
  • Up to 3 E1/T1/J1 PRI ports
• Expansion card slots: 3 (for EX08 or EX30 cards)
• D30 module support: Up to 2 (adds 100 users and 30 calls each)
• Voicemail storage: 10,000 minutes (expandable)
• Supported codecs: G.711 a/μ-law, G.722, G.726, G.729A, GSM, Speex, iLBC, ADPCM
• Video codecs: H.263, H.263P, H.264, MPEG4
• DTMF support: In-band, RFC4733, SIP INFO
• Security protocols: UDP, TCP, TLS, SRTP
• Network interfaces: 1 × LAN, 1 × WAN (10/100/1000 Mbps)
• External storage: USB and SD card
• Power supply: AC 100–240V, 50/60Hz, 1.8A max
• Power consumption: 6.2–59.1W
• Dimensions: 44 × 25.2 × 4.4 cm
• Weight: 2.5 kg
• Form factor: 1U rackmount