Yeastar S20 (Without Module)

20 Users, Max 4 FXS / FXO ports, Max 4 BRI ports, Max 1 GSM, Auto Call Recording

Core Telephony Features

• Automated Attendant (IVR)

• Attended Transfer

• AutoCLIP

• Blind Transfer

• Blocklist / Allowlist

• Call Back

• Call Detail Records (CDR)

• Call Forwarding

• Call Monitor

• Call Parking

• Call Pickup

• Call Recording

• Call Routing

• Call Waiting (FXS)

• Caller ID

• Contacts Management

• Custom Prompts

• Dial by Name

• DISA (Direct Inward System Access)

• Distinctive Ringtone

• DNIS Support

• Do Not Disturb (DND)

• Event Center

• Email-to-SMS / SMS-to-Email

• Fax-to-Email

• Paging / Intercom

• LDAP

• Linkus UC Clients

• Linkus Cloud Service*

• Mobility Extension

• Multi-language System Prompts

• Multi-language Interface

• Multi-site Interconnect

• Music on Hold

• One-Touch Recording

• Queue

• PIN List

• Phone Provisioning

• Real-time Status Monitoring

• Remote Management

• Ring Group

• SIP Forking

• SLA

• Speed Dial

• Time Conditions

• User Portal

• User Permission Control

• Voicemail

Model Comparison: S412 / S20 / S50

System Capacity

Protocols & Codec Support

• Protocols: SIP (RFC3261), IAX2

• Transport: UDP, TCP, TLS, SRTP

• Codecs:
  G.711 (A-law/U-law), G.722, G.726, G.729A, GSM, Speex, ADPCM, iLBC, H.263, H.263P, H.264, MPEG4

• DTMF: In-band, RFC4733/RFC2833, SIP INFO

Networking

• Ethernet Interfaces:

  • S412: 2 × 10/100 Mbps

  • S20 & S50: 2 × 10/100/1000 Mbps

• IP Services: Static IP, DHCP, VPN, Firewall, VLAN, DDNS, PPPoE, QoS, Static NAT, STUN

• Voicemail Storage: 5000 minutes (expandable)

• Company Contacts:

  • S50 only: Up to 2000 entries

Security & Reliability

• Built-in Firewall

• T.38 Fax Support

• Hot Standby

• External Storage:

  • S412 / S20: TF Card

  • S50: SD Card

Applications & Integrations

• Supported Apps:
  Linkus, Auto Provisioning, LDAP Server, Conference Panel, VPN Server, Billing*, Hotel*, MIKO CTI*, Yeastar CTI, Zoho*, QueueMetrics*
  (*Requires license; V4 hardware may not support certain apps)

Power & Physical

Environmental

• Operating Temp: 0°C to 40°C (32°F to 104°F)

• Storage Temp: –20°C to +65°C (–4°F to 149°F)

• Humidity: 10–90% non-condensing

Mounting

• S412: Desktop & Wall-mount

• S20: Desktop

• S50: 1U Rack-mount