1. ကုန်ပစ္စည်းကျော်view
The YEASTAR S412 is a flexible and modular VoIP PBX system designed to provide a productivity-enhancing communication platform for small businesses. It offers a compact yet powerful solution with both analog and VoIP capabilities, making it suitable for various office environments.
Key features include support for up to 12 analog extensions, 8 VoIP extensions, 8 concurrent calls, and 4 VoIP trunks. The system provides a comprehensive range of business-enhancing features without requiring additional license fees.

ပုံ 1: ရှေ့ view of the YEASTAR S412 VoIP PBX, showing the brand logo and status indicator lights for various connections and system states.

ပုံ 2- ထောင့်ချိုး view of the YEASTAR S412, highlighting its compact design and the arrangement of front panel indicators.
2. Initial Setup and Connections
Before powering on the YEASTAR S412, ensure all necessary cables are connected securely. This section outlines the basic steps for physical installation and initial network configuration.
2.1 ရုပ်ပိုင်းဆိုင်ရာချိတ်ဆက်မှုများ
- ပါဝါချိတ်ဆက်မှု- Connect the provided power adapter to the DC 12V port on the rear panel and then to a power outlet.
- ကွန်ရက်ချိတ်ဆက်မှု- Connect an Ethernet cable from your network router or switch to the LAN port on the S412.
- Analog Line/Extension Connections: Connect your analog telephone lines (PSTN) to the FXO ports (if applicable) and analog phones or fax machines to the FXS ports (EXT1-EXT12) as required.

Figure 3: Rear panel of the YEASTAR S412, illustrating the layout of the power input, LAN/WAN ports, FXO (red) and FXS (black) ports, and the reset button.
2.2 ကနဦးကွန်ရက်ဖွဲ့စည်းမှု
Upon first boot, the S412 will attempt to obtain an IP address via DHCP. You can access the web-based management interface using this IP address. Refer to the quick installation guide for details on finding the device's IP address or setting a static IP.
3. Operating the S412 PBX
The YEASTAR S412 is managed primarily through its intuitive web-based graphical user interface (GUI). This interface allows for comprehensive configuration of extensions, trunks, call routing, and other advanced features.
3.1 Web အင်တာဖေ့စ်အသုံးပြုခွင့်
- တစ်ခုဖွင့်ပါ။ web browser on a computer connected to the same network as the S412.
- Enter the IP address of the S412 into the browser's address bar.
- Log in using the default administrator credentials (refer to your quick start guide for default username and password).
၅.၃ အဓိကလည်ပတ်မှုအင်္ဂါရပ်များ
- Extension Management: Create, modify, and delete analog and VoIP extensions. Configure voicemail, call forwarding, and other extension-specific settings.
- Trunk Configuration: Set up and manage VoIP trunks (SIP, IAX2) and analog PSTN trunks for external calls.
- ခေါ်ဆိုမှုလမ်းကြောင်း- Define inbound and outbound routes, IVRs (Interactive Voice Response), call queues, and ring groups to manage call flow efficiently.
- ရွေ့လျားနိုင်မှု- Utilize the Linkus Mobile Client to turn your Android or iOS mobile phone into an office extension, enabling communication on the go.
- အလိုအလျောက် စီမံဆောင်ရွက်ပေးခြင်း- The system supports automatic provisioning for various IP phone brands, simplifying deployment.
4. ပြုပြင်ထိန်းသိမ်းမှု
Regular maintenance ensures the optimal performance and longevity of your YEASTAR S412 PBX. This includes routine checks, software updates, and proper environmental care.
4.1 Firmware အပ်ဒိတ်များ
Periodically check the YEASTAR official website for the latest firmware updates. Firmware updates often include bug fixes, security enhancements, and new features. Always back up your configuration before performing a firmware upgrade.
4.2 System Backup and Restore
Regularly back up your PBX configuration. This allows for quick recovery in case of data loss or system malfunction. The web interface provides options to create and restore system backups.
4.3 Environmental Care
- Keep the device in a cool, dry, and well-ventilated area.
- Avoid exposing the device to direct sunlight, excessive heat, or moisture.
- Ensure proper airflow around the unit to prevent overheating.
- နူးညံ့ခြောက်သွေ့သော အဝတ်ဖြင့် အပြင်ပိုင်းကို သန့်ရှင်းပါ။ အရည်သန့်စင်ဆေး မသုံးပါနဲ့။
၃
This section provides solutions to common issues you might encounter with your YEASTAR S412 PBX.
5.1 No Power Indicator Light
- ပါဝါချိတ်ဆက်မှုကို စစ်ဆေးပါ- Ensure the power adapter is securely connected to the PBX and a working power outlet.
- Power Adapter ကို အတည်ပြုပါ- Confirm that you are using the original power adapter supplied with the device.
5.2 ဝင်ခွင့်မရပါ။ Web အင်တာဖေ့စ်
- ကွန်ရက်ချိတ်ဆက်မှု- Verify that your computer is on the same network as the S412 and that the Ethernet cable is properly connected to the LAN port.
- IP လိပ်စာ- Confirm the correct IP address of the S412. You might need to use a network scanner or check your router's DHCP client list.
- Firewall- Temporarily disable any firewalls on your computer to rule out interference.
- မူရင်းအထောက်အထားများ- If you've forgotten your password, consider a factory reset (refer to the manual for the reset procedure, which will revert settings to default).
5.3 No Dial Tone on Analog Phone
- FXS Port Connection: Ensure the analog phone is correctly connected to an active FXS port (EXT1-EXT12).
- Extension Configuration: Verify that the extension associated with the FXS port is properly configured and enabled in the PBX web ကြားခံ။
- မော်ဂျူး အခြေအနေ- Check the status of the FXS module in the web interface to ensure it is detected and operational.
6. နည်းပညာဆိုင်ရာသတ်မှတ်ချက်များ
The following table details the technical specifications of the YEASTAR S412 VoIP PBX.
| ထူးခြားချက် | အသေးစိတ် |
|---|---|
| ထုတ်လုပ်သူ | YEASTAR |
| အမှတ်တံဆိပ် | YEASTAR |
| မော်ဒယ်နံပါတ် | S412 |
| ပစ္စည်းအလေးချိန် | ၉.၃၃ ပေါင် (၄.၂၄ ကီလိုဂရမ်)၊ |
| Package Dimensions | 13.62 x 8.86 x 4.21 လက်မ |
| အရောင် | အနက်ရောင် |
| ပစ္စည်းအမျိုးအစား | ပလပ်စတစ် |
| စာမျက်နှာတစ်ခုချင်းစာကြောင်းများ | 4 |
| တယ်လီဖုန်းအမျိုးအစား | ကြိုးများ |
| ပါဝါအရင်းအမြစ် | ကြိုးတပ်လျှပ်စစ် |
| ဖြေဆိုခြင်းစနစ် အမျိုးအစား | ဒစ်ဂျစ်တယ် |
| တွဲဖက်သုံးနိုင်သော စက်များ | PSTN, Digital Answering Systems, VoIP Systems |
| ညီလာခံခေါ်ဆိုမှုစွမ်းရည် | အခြေခံ |
| Multiline လုပ်ဆောင်ချက် | Multi-Line လည်ပတ်မှု |
| ပထမဆုံးရရှိနိုင်သည့်ရက်စွဲ | နိုဝင်ဘာ ၁၆၊ ၂၀၂၁ |

ပုံ ၂ - အတွင်းပိုင်း view of the YEASTAR S412, revealing the main circuit board and modular slots for expansion cards (e.g., FXO/FXS modules).





