Compact and full-featured IP-PBX that support 50 users and 25 Concurrent Calls.


S50 is a compact and full-featured IP-PBX that comes in a 19’’ 1U rack-mountable chassis. The advanced module-based S50 is capable of supporting ISDN BRI, PSTN, and GSM connectivity, providing VoIP communications for up to 50 users.

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Product Details

Physical Features

  • 50 Users
  • 25 Concurrent Calls
  • 8 FXS/FXO/BRI Ports
  • 4 GSM/3G/4G Ports
  • AC 100-240V 50/60HZ 0.6A max
  • 34cm x 21cm x 4.4cm
  • 1.48 kg

Call Features

  • Attended Transfer
  • Call Back
  • Call Detail Records (CDR)
  • Call Forwarding
  • Call Pickup
  • Call Recording
  • Caller ID

Business Features

  • Automated Attendant (IVR)
  • Conference
  • Email to SMS/SMS to Email
  • Fax to Email
  • Music on Hold
  • Ring Group
  • Video Calls

Telephony Support

  • SIP (RFC3261), IAX2
  • G711 (alaw/ulaw), G722, G726, G729A, GSM, Speex, ADPCM, iLBC, H263, H263P, H264, MPEG4
  • In-band, RFC4733, RFC2833, SIP INFO
  • Ethernet: 2 × 10/100/1000 Mbps
  • Static IP, DHCP, VPN, Firewall, VLAN, DDNS, PPPoE, QoS, Static NAT, STUN


  • Real-time Status Monitor
  • Remote Management
  • Event Center
  • Do Not Disturb (DND)
  • User Portal
  • User Permission

Yealink Works With

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