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Yeastar S Series IP PBX
Model : S20

Easy to use. Powerful in Production. Built for Small Business.

The Model - S20 Yeastar IP PBX is a compact entry-level small business phone system. It’s built to be simple to use and powerful in production. reliable and feature-rich PBX system.


·  20 SIP Users

·  10 Concurrent Calls

·  Up to 4 FXO / FXS / BRI Ports

·  Up to 1 GSM/3G/4G SIM Channel

·  20 VoIP Trunks


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The PBX Server Capacity:

Number of sip users: 20
Number of concurrent calls (maximum): 10
External/internal port (maximum value): 4
Mobile SIM card port (maximum value): 1
E1 digital relay (maximum value): -

Voice message capacity: 5000 minutes (expandable)

Recording capacity expansion: TF card


VoIP Feture:

VoIP external line : 20
Protocol : SIP(RFC3261), IAX2
Transport Protocol : UDP, TCP, TLS, SRTP
Voice Codec : G711(alaw/ulaw), G722, G726, G729A, GSM, Speex, ADPCM
Video Codec : H261, H263, H263P, H264, MPEG4

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


The PBX Server Function:

Call back / Call parking / Video call / Combining Skype / Voice message forwarding

Speed dial / Call waiting / Automatic phone operator / PIN Code list / Voice message to email

Blind transfer / Call routing / Call ID / External to External(DISA) / Intelligent call in matching

Consultation transfer / Hold music / Call record / LDAP directory / Permission list

Line up / One key recording / Automatic configuration / Broadcast(Broadcast Team)

Linkus software / Ringing Group / Automatic recording / One Number for Multi-Machine

Ringing Group / Automatic recording / One Number for Multi-Machine / Intercom(intercom group)

Email to SMS(SMS to Email) / Monitor listen / Three-Way Calling / Firewall / Dial recognition(DNIS)

Custom prompt sound / Not disturb / Conference call / IP blacklist / Dial by name Fax to email

Multilingual system prompt / call forwarding / Featured Ringing / Event center / Call interception

Extension user management interface / Mobile Extension / Call charging / Fax (T.30/T.38)

Call charging / Voice message / Multi language web configuration interface / hot standby


Physics Feture:

1-WAN口: 1×10/100Mbps, 1-LAN口: 1×10/100Mbps
Network support: Static IP, PPPoE, DHCP Server, DHCP Client, Firewall, VLAN, DDNS, QoS, VPN, STU

Power Adapter: DC 12V, 1A (power-1.8~10.6W )

1-TF Card Slot ( Max 32GB )

Product size: 160x160x30mm


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