GSM+PSTN Network and Analog Telephone Wireless pbx

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$1.00 - $369.00 / Pieces | 1 Piece/Pieces (Min. Order)
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Quick Details
Place of Origin:
Fujian, China
Brand Name:
Model Number:
FXS Ports:
FXO/BRI Ports:
4 (Max)
GSM/3G/4G Channels:
2 (Max)
VoIP Trunks:
4 (Max)
Concurrent Calls:
Module Slots:
TF Card Slot:
1 10/100 Mbps
1 10/100 Mbps
Supply Ability
Supply Ability:
5000 Unit/Units per Month
Packaging & Delivery
Packaging Details
10 pcs in one carton
Xiamen Export
Lead Time :
2 days after payment
Video Description
Product Description


Yeastar S412 is a flexible and modular VoIP PBX engineered for the communications needs of small companies. Yeastar S412 can handle up to 4 CO/BRI lines, up to 12 analog extensions, 2 GSM/3G/4G channels, 8 VoIP extensions, and 4 VoIP trunks, delivering exceptional cost savings, productivity, efficiency improvements and peace of mind.

Related S-Series VoIP PBX Models

Future-Proof Modular Design

With a unique modular design, the S412 supports 8 fixed FXS ports, and can add 4 extra FXS ports and 4 PSTN or BRI lines depending on the needs. You can also take advantage of a flexible combination of FXS, FXO, BRI, GSM interfaces, and the VoIP capability cost-effectively.

2 Module Slots for Internal Extension            2 Module Slots for External Lines  

O2 Module
2 FXO ports to Terminate two analog PSTN (POTS) lines
S2 Module
2 FXS ports to terminate two analog telephones
SO Module
1 FXO and 1FXS port to provide unique PSTN Fallback Function
B2 Module
2 BRI Ports to terminate two BRI lines
GSM Module
 1 Channel for GSM Voice Calls (850/900/1800/1900 MHz)
3G Module
1 Channel for WCDMA Voice Calls (UMTS 900/2100MHz or 850/2100MHz or 850/1900MHz)
4G Module
1 Channel for 4G LTE Voice Calls and Data (Only support 1 channel that could use 4G data)

Multiple Business-enhancing Features ( No License Fee)

- Automated Attendant (IVR)
- Attended Transfer

- Auto Provision IP Phones

- AutoCLIP

- App Center
- Blind Transfer
- Blacklist/Whitelist
- Billing App
- Call Back
- Call Detail Records (CDR)
- Call Forwarding
- Call Monitor
- Call Parking
- Call Pickup
- Call Recording
- Call Routing
- Call Waiting

- Caller ID

- Conference
- Custom Prompt
- Dial by Name
- Distinctive Ringtone
- Do Not Disturb (DND)
- Emergency Number
- Event Center
- Email to SMS/SMS to
- Email
- Fax to Email
- Follow Me
- Hot Standby
- Import/Export Extensions
- Paging/Intercom
- Mobility Extension
- Multi-language System Prompt

- Multi-language Web GUI

- Music on Hold
- One Touch Recording
- Queue
- PIN List
- Real-time Status Monitor
- Ring Group
- SIP Forking
- Speed Dial
- Time Condition
- User Portal
- User Privileges
- Video Calls
- Voicemail
- Voicemail to Email
- Voicemail Forwarding

Extending Features with App center

An easy access to a wealth of apps to extend features for your PBX and powers your communication.

Linkus Mobile Client - Your Free Mobile Extension

Coordinated with S-Series VoIP PBX, Linkus Mobile Client makes your Android or iOS mobile phone an office extension.

- 8 VoIP Users
- 8 Concurrent Calls
- 4 VoIP Trunks
- T.30 & T.38 Fax
- Fax to Email
- Incoming Fax Tone Detection
- 8 Fixed RJ11 FXS Ports
- 4 Customizable FXS RJ11 Ports
- Up to 4 Customizable FXO/BRI RJ11 Ports
- Up to 2 Customizable GSM/3G/4G Channels
- 1 10/100Mbps LAN
- 1 10/100Mbps WAN
- TF Card Slot
Voice Processing
- Protocol: SIP, IAX2
- Transport Protocol: UDP, TCP, TLS,SRTP
- DTMF: In-band, RFC4733, SIP INFO
- Codec: G711 (alaw/ulaw), G722, G726,
G729A, GSM, Speex, ADPCM, iLBC, H263, H263P, H264, MPEG4
- Size: 290 mm x 180 mm x 33 mm
- Weight: 0.68 kg
- Power Supply: DC 12V 3.33A
- Power Consumption: 9.0-25.6W
- Operation Range: 0°C to 40°C, 32°F to 104°F
- Storage Range:-20°C to 65°C, -4°F to 149°F
- Humidity: 10-90% non-condensing
App Center
- Linkus Mobile Client
- Auto Provisioning
- LDAP Server
- Conference Panel
- VPN Server
- Billing App
- Hotel App
- char utile h+ Integration
- QueueMetrics Live Integration
Shipping & Services

Superior Customer Services

- 3 year Warranty
- Free firmware upgrade for life
- 24 hours Technical support through phone calls, emails, skype, and remote assistance
- Various training, including sales and technical training like online Webinar
- Customizable products with OEM/ODM service


- Within 2-3 days after the payment
- Support any delivery methods as you require, such as:

Our Company

About Yeastar

Yeastar specializes in the design and development of innovative telecommunications equipment, including VoIP PBX systems and VoIP gateways for the SMB. Founded in 2006, Yeastar has established itself as a global leader in the telecommunications industry with a global partner network and over 100,000 customers worldwide. Yeastar products have been consistently recognized in the industry for their high performance and innovation. For more information about Yeastar or to become a Yeastar partner, please visit

Yeastar factory applies SMT craft with strict quality control is consistent with ISO 9001 Quality Accreditation.


Yeastar in the World

Yeastar attends professional exhibitions together with distributors every year, such as CeBIT, ITEXPO EAST, GITEX in Dubai, Convergence India, Elastix World, BroadSoft Connections, CommunicAsia...ect.