Yeacomm YF-P21-Black
دفترچه راهنمای روتر Yeacomm 4G LTE CPE
Model: YF-P21-Black
1. مقدمه
This manual provides detailed instructions for the setup, operation, and maintenance of your Yeacomm 4G LTE CPE Router. This device is designed to provide reliable wireless and wired internet access for home and office environments by utilizing a 4G LTE SIM card.

شکل 1: جلو view of the Yeacomm 4G LTE CPE Router with LED indicators.
2. ویژگی های محصول
- Supports multiple 4G LTE frequency bands (FDD: B2/B3/B4/B5/B7/B8/B28, TDD: 38/39/40/41) and 3G HSPA+ (850Mhz/900Mhz/1900Mhz).
- Unlocked 4G router with SIM card slot for easy internet access. Note: SIM card must be activated and support hotspot services.
- Wi-Fi Standard: IEEE 802.11b/g/n, providing wireless connectivity.
- Equipped with two external 4G cellular antennas and built-in Wi-Fi antennas for enhanced signal reception.
- Features include Band Locking Function, IPv4/IPv6 dual stack, L2TP VPN, and TR069 management.
- LED indicator display for easy status monitoring.
- Includes 2 RJ11 ports for voice calling and 4 RJ45 LAN ports for wired connections.
3. محتویات بسته
بررسی کنید که آیا همه اقلام در بسته موجود است یا خیر:
- 1x Yeacomm P21 4G LTE SIM Card Router
- 1 عدد کابل RJ45
- 1x Power Adapter (DC output 12V 1A, AC input 100V-240V)
- 1x User Manual/After-sales Card
- Antennas (2 external 4G cellular antennas)

Figure 2: Contents included in the Yeacomm P21 package.
4. راهنمای راه اندازی
4.1. نصب سخت افزار
- قرار دادن سیم کارت: Ensure your SIM card is activated and supports hotspot services. The router requires a standard SIM card (15x25mm). Micro and Nano SIM cards are not directly supported without an adapter.

Figure 3: Correct SIM card insertion.
- اتصال آنتن ها: Screw the two external 4G cellular antennas firmly into the SMA ports on the back of the router.

Figure 4: Antenna connection points.
- Plug in Power Cable: Connect the provided power adapter to the router's power input port and then to a power outlet.
- Wait for Indicators: Allow a few moments for the router to power on and initialize. Observe the LED indicators on the front panel. The "SIG" (signal) and "4G/LTE" indicators should light up, indicating a successful connection to the cellular network.
۴.۲. پیکربندی اولیه (Web رابط)
برای دسترسی به روتر web management interface for advanced settings:
- اتصال به روتر: Connect your computer to the router via an Ethernet cable (RJ45 port) or wirelessly using the Wi-Fi SSID and password printed on the router's label.
- دسترسی داشته باشید Web رابط کاربری: a را باز کنید web مرورگر و آدرس IP پیش فرض را وارد کنید 192.168.0.1 در نوار آدرس
- ورود به سیستم: نام کاربری پیشفرض را وارد کنید ریشه و رمز عبور مدیر (or as specified on the router's label) to log in.
- تنظیمات APN را پیکربندی کنید: حرکت به Device Settings > Internet Settings > APN. Click "Add New" to set the correct APN for your SIM card's carrier. You can find the APN information on your carrier's official website or by searching online. Apply the settings.
- انتخاب شبکه: In Device Settings > Internet Settings > Network Selection, you can choose "Automatic" or specify "4G Only", "3G Only", etc., based on your preference and network availability.
- Band Locking (Optional): For advanced users, the router supports band locking. Navigate to Device Settings > Advanced Settings > Frequency. Here you can enable/disable specific frequency bands. Your settings will take effect after restarting the device.

Figure 5: Quick setup guide for the router.
5. راه اندازی روتر
5.1. اتصال Wi-Fi
Once the router is set up and connected to the cellular network, you can connect your devices (smartphones, laptops, tablets) to its Wi-Fi network. The default Wi-Fi SSID and password are provided on a sticker on the router.
- جستجو برای available Wi-Fi networks on your device.
- Select the router's SSID (e.g., ZLT P21_0C7220).
- Enter the Wi-Fi password (KEY) when prompted.
۳. اتصال سیمی
Use the RJ45 LAN ports on the back of the router to connect devices such as desktop computers, smart TVs, or gaming consoles via Ethernet cables for a stable wired connection.

Figure 6: Router back panel with labeled ports.
5.3. Voice Calling (RJ11 Ports)
The router includes two RJ11 ports for voice calling functionality. You can connect a standard analog telephone to these ports. This feature is supported when using SIM cards from carriers like T-Mobile. The voice function may not work with Verizon's SIM cards.
To enable/configure voice settings, navigate to Device Settings > Voice Settings در web رابط کاربری
5.4. مدیریت داده ها
را web interface allows you to monitor and manage your data usage. Navigate to Device Settings > Statistics Settings به view data usage statistics and set data plans or alerts.
6. تعمیر و نگهداری
- برای جلوگیری از گرم شدن بیش از حد، روتر را در مکانی با تهویه مناسب نگه دارید.
- Clean the router regularly with a soft, dry cloth. Do not use liquid cleaners.
- Ensure antennas are securely connected for optimal signal reception.
- Periodically check for firmware updates via the web رابط (System Settings > System Upgrade) برای اطمینان از عملکرد و امنیت بهینه.
- If the router becomes unresponsive, perform a reboot via the web رابط (System Settings > Reboot) یا با جدا کردن و دوباره وصل کردن آداپتور برق.
7 عیب یابی
If you encounter issues with your Yeacomm 4G LTE CPE Router, refer to the following common troubleshooting steps:
| مشکل | علت احتمالی | راه حل |
|---|---|---|
| بدون اتصال به اینترنت | SIM card not activated or incorrect APN settings. No cellular signal. | Ensure SIM card is active and supports hotspot services. Verify APN settings in the web interface. Check the "SIG" LED indicator for signal strength. Relocate the router for better signal. |
| سرعت پایین اینترنت | Weak cellular signal. Network congestion. Incorrect band selection. | Move the router to an area with stronger signal. Try using the Band Locking feature in advanced settings to select a less congested band if available in your area. |
| Wi-Fi Not Visible or Connectable | Wi-Fi disabled. Incorrect password. | تنظیمات وایفای را در web رابط (Home Network > Wireless Settings). Ensure Wi-Fi is enabled and the password is correct. |
| Voice Calling Not Working | SIM card carrier does not support voice over LTE (VoLTE) or voice function. Incorrect voice settings. | Confirm with your SIM card carrier if voice calling is supported on their network with this type of device. Check voice settings in the web رابط (Device Settings > Voice Settings). Note: Verizon SIM cards may not support this feature. |
| دسترسی امکان پذیر نیست Web رابط | Incorrect IP address. Network connectivity issue. | Ensure your device is connected to the router (wired or Wi-Fi). Verify you are using the correct IP address (default is 192.168.0.1). Try restarting the router. |
If problems persist, please contact Yeacomm professional tech support for assistance before considering a return.
8. مشخصات
| ویژگی | جزئیات |
|---|---|
| ابعاد محصول | 9.06 x 5.12 x 0.79 اینچ |
| وزن مورد | 1.54 پوند |
| شماره مدل | YF-P21-Black |
| نام تجاری | Yeacomm |
| ویژگی خاص | 2*RJ-11 port/4*RJ45 port, 2*SMA external antenna port |
| کلاس باند فرکانس | Quad-Band (FDD: B2/B3/B4/B5/B7/B8/B28, TDD: 38/39/40/41, 3G HSPA+: 850Mhz/900Mhz/1900Mhz) |
| استاندارد ارتباط بی سیم | 802.11b، 802.11g، 802.11n |
| دستگاه های سازگار | کامپیوتر شخصی |
| فرکانس | 2.4 گیگاهرتز |
| موارد استفاده توصیه شده | خانه، دفتر |

Figure 7: US Carrier LTE Frequency Bands and Yeacomm P21 Router Support Bands.
9. گارانتی و پشتیبانی
For any issues or questions regarding your Yeacomm 4G LTE CPE Router, please contact Yeacomm's professional technical support. Their contact information can typically be found on the included After-sales Card or on the official Yeacomm webسایت
Before returning the product, it is highly recommended to contact technical support first, as many issues can be resolved with their guidance.
۱۰.۴. ویدیوهای رسمی محصول
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