Airtel X25 Pro

ZLT X25 Pro CPE Router User Manual

Model: X25 Pro | Brand: Airtel

1. Introduction

This manual provides detailed instructions for setting up, operating, and maintaining your ZLT X25 Pro CPE Router. The ZLT X25 Pro is a high-performance WI-FI 6 Dual Band 5G router designed to provide fast and reliable internet connectivity. Please read this manual carefully before using the device to ensure optimal performance and safety.

2. Safety Information

  • Ensure the router is placed on a stable, flat surface away from direct sunlight, heat sources, and moisture.
  • Use only the power adapter provided with the device.
  • Do not open or attempt to repair the device yourself. Refer all servicing to qualified personnel.
  • Keep the device away from children and pets.
  • Ensure adequate ventilation around the router to prevent overheating.

3. Setup Guide

3.1 Package Contents

Before you begin, please verify that your package contains the following items:

  • ZLT X25 Pro CPE Router
  • Power Adapter
  • Ethernet Cable
  • Quick Start Guide (if included)
Packaging box for the ZLT X25 Pro router, showing a white router model.
ZLT X25 Pro Router Packaging

3.2 Physical Setup

  1. Insert SIM Card: Locate the SIM card slot on the router. Insert a NANO SIM card (1.8V & 3.3V adaptive) into the designated slot until it clicks into place. The router also supports a built-in 1-way eSIM card.
  2. Connect Power: Connect the power adapter to the router's DC socket and then plug it into a power outlet. The router will automatically power on.
  3. Connect Ethernet (Optional): If you wish to connect a device via a wired connection, use an Ethernet cable to connect your device to one of the router's LAN ports (2 x 2.5Gbps).
  4. Placement: Place the router in an open area, preferably near a window, to ensure optimal 5G signal reception. Avoid placing it near large metal objects or other electronic devices that may cause interference.
Front view of the red ZLT X25 Pro router, showing indicator lights and WPS button.
Front view of the ZLT X25 Pro Router (Red model)

3.3 Initial Configuration

Once powered on, the router will attempt to connect to the 5G network. You can monitor the status using the indicator lights.

  • Wi-Fi Connection: Look for the Wi-Fi network name (SSID) and password printed on a label on the bottom or back of the router. Connect your devices to this Wi-Fi network.
  • WPS Button: For quick and secure connection of WPS-enabled devices, press the WPS button on the router and then activate WPS on your device within two minutes.
  • Web Interface: For advanced settings, connect to the router's Wi-Fi or a LAN port, then open a web browser and enter the router's default IP address (usually 192.168.1.1 or similar, check the label). Log in with the default username and password (also on the label).

4. Operating Instructions

4.1 Indicator Lights

The ZLT X25 Pro router features several LED indicators to show its operational status:

  • PWR (Power): Indicates if the device is powered on.
  • WI-FI: Shows Wi-Fi signal status.
  • 5G: Indicates 5G network connection status.
  • 4G: Indicates 4G network connection status.
  • Signal Quality: Displays the strength of the cellular signal.

Refer to the router's front panel for the exact layout of these indicators.

4.2 Wi-Fi Connectivity

The router supports dual-band Wi-Fi (2.4GHz and 5GHz) with WI-FI 6 (802.11ax) standard. To connect a device:

  1. Enable Wi-Fi on your device (smartphone, laptop, etc.).
  2. Scan for available Wi-Fi networks.
  3. Select your router's SSID (network name).
  4. Enter the Wi-Fi password when prompted.

4.3 Advanced Features

The router includes advanced functions accessible via the web interface:

  • Firewall: Configure network security rules.
  • VPN: Set up Virtual Private Network connections.
  • Voice Interface: The RJ11 port supports VoNR/VoLTE/VoIP voice communication.

5. Maintenance

5.1 Cleaning

Regularly clean the router with a soft, dry cloth. Do not use liquid or aerosol cleaners. Ensure the ventilation holes are free from dust and obstructions.

5.2 Firmware Updates

Periodically check the router's web interface for available firmware updates. Keeping your firmware up-to-date ensures optimal performance, security, and access to new features.

5.3 Factory Reset

If you encounter persistent issues or wish to restore the router to its original settings, you can perform a factory reset:

  • RESET Button: With the router powered on, use a pin or paperclip to press and hold the RESET button for approximately 6 seconds until the indicator lights flash. The router will then restart with factory default settings.

6. Troubleshooting

If you experience issues with your ZLT X25 Pro router, try the following steps:

  • No Power: Ensure the power adapter is securely connected to both the router and a working power outlet. Check the PWR indicator light.
  • No Internet Connection:
    • Check the 5G/4G indicator lights. If they are off or red, there might be a network issue or SIM card problem.
    • Ensure the SIM card is correctly inserted and active.
    • Try restarting the router by unplugging and re-plugging the power adapter.
    • Verify APN settings in the router's web interface if necessary.
  • Weak Wi-Fi Signal or Slow Speed:
    • Relocate the router to a more central location, away from obstructions and interference sources.
    • Ensure your devices are within the router's Wi-Fi range.
    • Check for firmware updates.
    • Consider changing Wi-Fi channels in the router's web interface to avoid interference.
  • Cannot Access Web Interface:
    • Ensure your device is connected to the router's network (Wi-Fi or LAN).
    • Verify you are using the correct IP address and login credentials.
    • Clear your browser's cache or try a different browser.

7. Technical Specifications

7.1 Hardware Specifications

Table detailing Hardware Specifications and 5G Capability.
Hardware and 5G Capability Overview
Specification Description
ChipsetMTK T750 (Quad-core ARM Cortex-A55 processor, up to 2.0GHz)
Wi-Fi ChipsetMT7915+MT7975
Cellular Network ModeNSA/SA/TDD-LTE/FDD-LTE/HSPA+
Flash8Gb SLC nand flash
RAM8Gb LPDDR4
LED IndicatorsPower, Wi-Fi Signal Status, 4G Signal Indicator, 5G Signal Indicator, Signal Quality Indicator
ButtonsReset Tact Switch, WPS Button
LAN Ports2 * 2.5Gbps LAN
WAN Ports1
RJ11 Port1 (Optional)
SIM Slot1 (Nano, 4FF), can customize eSIM
DC Socket1
USB InterfaceTYPE-C USB3.0 for Manufacture (Debugging)
Antenna12 Built-in (5G & LTE & WiFi)
Dimensions190mm * 90mm * 90mm
Weight550g
Power Consumption< 20W
Power SupplyAC100V~240V, 50Hz~60Hz; DC 12V DC≥10% 1.5A
Operating Temperature0 °C -- 45 °C
Certifications3C, CE, FCC, RoHS

7.2 5G Capability

Feature Capability
3GPP Release15, NSA & SA
Support Bands (Modem A)N1/N3/N5/N7/N8/N20/N28/N38/N40/N41/N77/N78
Support Bands (Modem B)N1/N3/N7/N8/N20/N28/N38/N40/N41/N77/N78
NR ModulationDL 256QAM, UL 256QAM
NR CA (Up to 200MHz)Refer to ZLT X28-X25PRO_CA&EN-DC_Features_V1.1.2.xlsx
NR SCS30kHz, 15kHz
MIMODL MIMO 4*4: N1/N3/N7/N38/N40/N41/N77/N78; UL MIMO 2*2: N41/N77/N78
ENDCRefer to ZLT X28-X25PRO_CA&EN-DC_Features_V1.1.2.xlsx
5G Channel BW5M, 10M, 15M, 20M, 25M, 30M, 40M, 50M, 60M, 80M, 90M, 100M
5G HPUEN41/N77/N78
Chipset Peak Throughput5G NR DL: 3.6Gbps/UL: 250Mbps (@200MHz, SA TDD B:2 ratio)
Output Power @25°CN41/N77/N78: 26±2dBm; OTHER BAND: 23±2dBm
Antenna8 Built in
Antenna Gain1-5 dB (omnidirectional)

7.3 Wi-Fi Parameters

Table outlining Network Mode, Frequency Band, 5G DL CA, Air Interface Capability, Wi-Fi Parameters.
Network and Wi-Fi Parameters
Project Parameter
Wi-Fi Frequency2.4 GHz + 5 GHz
Wi-Fi Mode (2.4G)802.11b/g/n/ac/ax
Wi-Fi Mode (5G)802.11a/n/ac/ax
Wi-Fi Encryption MethodOpen, WPA2-PSK and WPA/WPA2-PSK, WPA3-PSK, WPA2/WPA3-PSK
Wi-Fi Output Power (2.4G@MCS11)17 dBm
Wi-Fi Output Power (5G@MCS11)14.5 dBm
Wi-Fi Antenna Gain (2.4G)3dBi
Wi-Fi Antenna Gain (5G)5dBi
Wi-Fi Channel Bandwidth20MHz, 40MHz, 80MHz, 160MHz
Wi-Fi Speed (2.4G)574Mbps
Wi-Fi Speed (5G)2400Mbps
Wi-Fi MIMOMIMO2*2 (2T2R)

8. User Tips

  • For optimal 5G performance, experiment with different router placements in your home to find the spot with the strongest signal quality.
  • If you experience slow speeds, ensure your connected devices also support WI-FI 6 for the best wireless experience.
  • Regularly change your Wi-Fi password to maintain network security.

9. Warranty and Support

For warranty information and technical support, please refer to the documentation provided at the time of purchase or contact your retailer. Keep your proof of purchase for any warranty claims.

10. Frequently Asked Questions

Q: What kind of SIM card does the router use?
A: The router uses a NANO SIM card (4FF) and also supports a built-in eSIM.
Q: Does this router support both 4G and 5G networks?
A: Yes, it supports 5G NR SA, 5G NR NSA, and LTE (4G) network modes.
Q: How many Ethernet ports does it have?
A: It has two 2.5Gbps LAN ports and one WAN port.
Q: Can I use this router for voice calls?
A: Yes, the RJ11 voice interface supports VoNR/VoLTE/VoIP communication.

Ask a question about this manual

Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.