AT&T Internet Air NCM1120D2-D323 User Manual
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AT&T Internet Air NCM1120D2-D323 User Manual

Business 5g gateway + wi-fi extender
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AT&T Internet Air
for Business
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5G Gateway + Wi-Fi Extender
User Guide

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Questions and answers

Aman
March 8, 2025

How to change to a customer IP address?

0
1 comments:
Mr. Anderson
March 8, 2025

To change the customer IP address on the AT&T Internet Air NCM1120D2-D323, you can assign a static IP within the DHCP IP pool. Follow these steps:

1. From the Dashboard, click Network > LAN > DHCP.
2. Select Yes or No to enable or disable static IP assignment.
3. View the current list of assigned static IP addresses.
4. To assign a new static IP address, click Add Rule.
5. Select a device from the drop-down list of connected devices and confirm or edit the IP address.
6. For devices not yet connected, manually enter the details.

These steps allow you to modify the assigned IP address for devices on your network.

This answer is automatically generated

0
Todd Vice
June 9, 2025

serial number location

0
Francisco
April 2, 2025

How can I change my Wi-Fi on my At&t internet air router from 5 GHz to 2.4 GHz

-3

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Summary of Contents for AT&T Internet Air NCM1120D2-D323

  • Page 1 AT&T Internet Air for Business 5G Gateway + Wi-Fi Extender User Guide...

  • Page 2: Table Of Contents

    Contents 5G Gateway Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Introduction .
  • Page 3 LAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 Wi-Fi .
  • Page 4 Connecting your extender . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61 Powering up .

  • Page 5: Getting Started

    Getting started The topics in this section will introduce you to your gateway, help you get set up, provide an overview of the gateway, and get you started with basic operations .

  • Page 6: Introduction

    Introduction Thank you for purchasing your new AT&T Internet Air for Business 5G Gateway . About the user guide The following topics explain how best to use this guide to get the most out of your gateway . Before using your gateway Read the Safety Information Guide that came with your device thoroughly for proper usage .

  • Page 7: Setting Up Your Gateway

    Setting up your gateway The following instructions give you all the information you need to set up your AT&T 5G Gateway for the first time . Features and functions These topics illustrate your gateway’s features and key functions . External Antenna Cover SMA Connector...
  • Page 8 Feature Description Illuminated components indicating the status of the LED Status Lights gateway’s functionality, see “LED Status Lights” on page External Antenna Fully removable protective cover . Cover SMA Connector RF Coaxial connection point . Press the Wi-Fi Protected Setup (WPS) button to connect WPS capable devices .

  • Page 9: Led Status Lights

    LED Status Lights The status lights located on the front of the device indicate the status of the 5G Gateway’s functions . • The 4G & 5G LED Status Lights indicate the cellular network signal strength and status . • The Wi-Fi LED Status Lights indicate the Wi-Fi connection and WPS status . •...

  • Page 10: Installing A Sim Card

    Installing a SIM Card Insert a SIM card 1 . Rotate the SIM Card Cover to open . 2 . Insert the SIM card into the SIM Card Slot and press down until the SIM card clicks into the SIM Card Slot . 3 .

  • Page 11: Connecting Your Devices

    Connecting Your Devices The instructions below explain how to connect and set up your gateway . Plug in the gateway Using the power adapter (included), plug in the gateway by inserting the connector at the end of the power cable into the DC Power Port on the gateway .

  • Page 12: Powering Up

    Powering up Wait for the gateway to power up . Once the gateway is powered up, the LED Status Lights will turn solid . This will take approx . 2-3 minutes . Cellular network signal status Verify the gateway is receiving a cellular network signal . The 5G or 4G LED Status Lights will be solid green when the gateway is receiving a strong cellular network signal .

  • Page 13: Connecting Your Devices

    Connecting your devices You can connect your device to the gateway’s Wi-Fi or Ethernet . Connect using Wi-Fi 1 . Use a web browser to visit http://attwifi.manager or http://192.168.1.1 . 2 . Enter your username and password, then click Login . Note: The default network name and password can be found on the label located at the bottom of your gateway .
  • Page 14 Connect to your computer or laptop’s Ethernet port Note: For best results, it is recommended that you use a Cat-6 Ethernet cable or higher .

  • Page 15: Basic Operations

    Basic operations The following topics outline basic features and operations of your gateway .

  • Page 16: Web User Interface

    Web User Interface The Web UI (Web User Interface) allows you to configure the 5G Gateway settings, and see status from the user-friendly dashboard . Web UI login 1 . With your connected device, use your preferred web browser to access the Web UI .

  • Page 17: Dashboard

    Dashboard The dashboard is a user-friendly single stop to view your 5G Gateway’s status, or change configurations . Accessing your dashboard 1 . Login to the Web UI, see “Web UI Login” on page 16 .

  • Page 18: Dashboard Main Menu Icons

    Dashboard main menu icons Icon Name Description The dashboard is a user-friendly single stop Dashboard to view your 5G Gateway’s status, or change configurations . View and modify your network configurations Network including your network map, network status, mobile WAN, LAN, and Wi-Fi . View and configure your security settings Security including your firewall and blocked devices .

  • Page 19: Dashboard Quick Link Icons

    Dashboard quick link icons Icon Name Description Internet Status Verify internet connection Mobile-WAN Cellular status Wi-Fi Wi-Fi settings Wi-Fi Protected Setup WPS quick connect shortcut Firewall Firewall security settings View and customize LAN settings Connected device status and Connected Devices information System Information Device information...

  • Page 20: Network

    View and manage your extender status Wi-Fi Extender and settings . Network View and configure your network settings . , click Network 1 . From the Dashboard to access your network settings . Note: When the network status is connected, it will show “OK” in green under the Internet Status icon on the dashboard .

  • Page 21: Network Map

    Network Map The Network Map gives you a high level visual representation of your network, and connected devices . 1 . From the Dashboard , click Network then click Network Map to view your network map .

  • Page 22: Status

    Mobile-WAN , click Network then click Network Map . 1 . From the Dashboard 2 . Click to view your WAN (Wide Area Network) IP address . , click Network then click Network Map . 1 . From the Dashboard 2 .
  • Page 23 • LAN: Provides an overview of your current LAN status . • Wireless 2 .4G: Provides an overview of the current status of your 2 .4 GHz Wi-Fi network . • Wireless 5G: Provides an overview of your the current status of your 5 GHz Wi-Fi network .

  • Page 24: Mobile-Wan

    Mobile-WAN Access your 4G/5G Mobile-WAN Status, APN Settings, and Antenna settings . , click Network then click Mobile-WAN, or click 1 . From the Dashboard the Mobile-WAN icon on the dashboard . Mobile-WAN Status , click Network > Network Map > 4G/5G . 1 .
  • Page 25 APN Settings , click Network > Network Map > 4G/5G > APN 1 . From the Dashboard Settings . 2 . Auto APN is active by default . 3 . You can manually configure the APN Settings by disabling Auto APN . Note: Consult with AT&T before changing APN settings which can impact data performance and your ability to access the Internet .
  • Page 26 Antenna , click Network > Network Map > Antenna . 1 . From the Dashboard 2 . From here you can toggle between the internal and external antenna if equipped (sold separately) . Note: Your antenna status will appear as “Internal” or “External” (according to your settings) in green under the Antenna icon on the dashboard .

  • Page 27: Lan

    Access and configure your LAN settings . , click Network then click LAN, or click the LAN 1 . From the Dashboard icon on the dashboard .
  • Page 28 IPv4 & DHCPv4 , click Network > LAN > IPv4 & DHCPv4 . 1 . From the Dashboard 2 . From here you can configure the following; • Setting: Setting Description MAC Address View the MAC address for your gateway . View and configure the IP Address for your IP Address gateway .
  • Page 29 3 . To assign a new static IP address, click Add Rule . 4 . Select a device from the drop-down list of currently connected devices, confirm the current IP address or edit it . 5 . For devices not yet connected, fill in the details manually . IPv6 Settings IPv6 Settings , click Network...
  • Page 30 Client List Client List , click Network > LAN > 1 . From the Dashboard , or click the Connected Devices icon on the dashboard . 2 . From here you can view the details of devices connected to your network . DHCP Lease DHCP Lease , click Network...

  • Page 31: Wi-Fi

    Wi-Fi View and configure your gateway’s Wi-Fi settings . Note: When Wi-Fi is turned on, it will show “Enabled” in green under the Wi-Fi quick link on the dashboard . Basic Basic , click Network > Wi-Fi > 1 . From the Dashboard , or click the Wi-Fi icon on the dashboard .
  • Page 32 • Band Steering: Turn Band Steering On or Off Note: Enabling Band Steering will create one combined Wi-Fi network . Please verify the new Wi-Fi Network Name and Password prior to saving . • Setting: Setting Description Enable or disable your Wi-Fi network by sliding Wi-Fi Network the switch to the On or Off...
  • Page 33 WPS (Wi-Fi Protected Setup) , click Network > Wi-Fi > 1 . From the Dashboard 2 . From here you can view and configure your WPS settings . • Frequency: View and configure your WPS frequency . • Enable WPS: Enable or disable WPS by sliding the switch to the On position .
  • Page 34 Radio Radio , click Network > Wi-Fi > 1 . From the Dashboard 2 . From here you can view and configure your radio settings . • Frequency: View and configure radio settings by selecting a frequency band from the drop-down list . •...
  • Page 35 Channel Bandwidth View and configure your channel bandwidth . Control Channel View and configure your control channel . Tx Power Adjustment View and configure your Tx power percentage . Guest Wi-Fi Guest Wi-Fi , click Network > Wi-Fi > 1 . From the Dashboard 2 .
  • Page 36 • Setting: Setting Description Enable or disable guest Wi-Fi by sliding the Guest Wi-Fi switch to the On or Off position . Guest Wi-Fi Name View and configure your guest Wi-Fi name . (SSID) Enable or disable the broadcasting of the Wi-Fi Broadcast SSID Network Name (SSID) by sliding the switch to the On...

  • Page 37: Security

    Security Configure and view your security settings . , click Security 1 . From the Dashboard to access your security settings .

  • Page 38: Firewall

    Firewall The Firewall provides an additional layer of protection to restrict outside access to devices on your network from would-be cyber attackers . Your AT&T 5G Gateway has been preconfigured with this setting turned on for both Firewall IPv4 and Firewall IPv6 by default . Note: When the firewall is enabled, it will show “ON”...
  • Page 39 To enable Firewall , click Security > Firewall IPv4 or Firewall IPv6, 1 . From the Dashboard or click the Firewall icon on the dashboard . 2 . Under the Common tab select Yes next to Enable Firewall . 3 . Click Save Note: Disabling the firewall is not recommended without careful consideration and additional protective measures in place .
  • Page 40 To configure Net Service Filter , click Security > Firewall IPv4, or click the 1 . From the Dashboard Firewall icon on the dashboard . 2 . Under the Net Service Filter tab select Yes next to Enable Net Service Filter .

  • Page 41: Blocked Devices

    Blocked Devices 1 . From the Dashboard , click Security > Blocked Devices . 2 . Under the Settings tab select Yes to Enable Blocked Devices . 3 . Click Add 4 . Select a device from the client drop-down list if it’s currently connected to your network .

  • Page 42: Diagnostic

    Diagnostic Run diagnostics on your gateway to identify information needed to ensure efficiency and peak performance . 1 . From the Dashboard , click Diagnostic to access your diagnostic tools . Diagnostic Tools 1 . From the Dashboard , click Diagnostic >...

  • Page 43: System Settings

    System Settings View and configure your gateway’s system settings . , click System Settings 1 . From the Dashboard to access your system settings .

  • Page 44: Admin (Password)

    Admin (Password) , click System Settings then click Admin 1 . From the Dashboard (Password), or click the System Settings icon on the dashboard . 2 . From here you can change your system password and device name . System Password Change your system password , click System Settings then click Admin...

  • Page 45: Backup/Restore

    Backup / Restore 1 . From the Dashboard , click System Settings then click Backup/ Restore . 2 . From here you can configure your system configuration or reset your system . Configuration Save to File Save your current system configuration to a file . , click System Settings then click Backup/ 1 .
  • Page 46 2 . Click Reboot 3 . An alert box will appear, click Confirm to continue, or Cancel to cancel the reboot . Reset to Default Reset your system to original factory settings . Warning: Performing a factory reset will restore the device to original factory settings and defaults shown on the gateway’s label .

  • Page 47: Firmware Update

    Alternative Reset 1 . Leave the gateway plugged in and lay it on its side . 2 . Use a paperclip to press and hold the factory reset button on the bottom of the gateway for at least 5 seconds until the System LED starts to flash green .
  • Page 48 Firmware Information Information Description Product ID View your product ID . Hardware Version View your hardware version . View your IMEI software version . Firmware version View the firmware version that is currently installed installed on your gateway . Check for firmware updates 1 .

  • Page 49: Nat Forwarding

    NAT Forwarding View and configure advanced network configurations . , click NAT Forwarding 1 . From the Dashboard to access your NAT forwarding settings . Enable DMZ to pass all WAN traffic to a specific device . , click NAT Forwarding then click DMZ .

  • Page 50: Upnp

    2 . Select Yes to Enable IPv4 DMZ . 3 . Enter the IP address of the device you want exposed . 4 . Click Save Note: To avoid the possibility of the IP address changing, making it unreachable, it’s recommended to assign a static IP address to the intended device .

  • Page 51: Alg

    Defines the maximum number of hops Advertisement Time to Live each packet can travel before timing out . ALG (Application Layer Gateway) allows dynamic TCP/UDP ports to communicate with known ports used to support underlying protocols such as VPN, FTP and VoIP services . If you are using applications that require these protocols, you may need to enable the below for an optimal experience .
  • Page 52 1 . From the Dashboard , click NAT Forwarding then click Virtual Servers to access your Port Forwarding List . Note: To avoid the possibility of the IP address changing, making it unreachable, it’s recommended to assign the device a static IP address . Add port forwarding rules 1 .

  • Page 53: Faqs, Technical Specifications, Troubleshooting

    FAQs, Technical Specifications, Troubleshooting The topics in this section will cover troubleshooting tips and gateway specifications .

  • Page 54: Common Issues

    Common Issues Troubleshooting Check below for solutions to common problems you may experience . Problem: My device is unable to connect to the 5G Gateway Wi-Fi network . Solution: Check to make sure Wi-Fi is enabled on your device and the Wi-Fi LED is solid green on the 5G Gateway .

  • Page 55: Specifications

    Specifications The following tables list your gateway’s specifications . Gateway specifications Specification Description Model NCM1120D2-D323 Cellular LTE Cat 19, 5G NSA Sub 6 GHz LTE B2/B5/B12/B14/B29/B30/B66 Frequency Bands 5G n2/n5/n14/n30/n66/n77 2 .4GHz/5GHz 802 . 1 1 a/b/g/n/ac/ax/be (Wi-Fi Wi-Fi 2x2 MIMO Certifications FCC .

  • Page 56: Getting Started

    Getting Started The topics in this section will introduce you to your extender, help you get set up, provide an overview of the extender, and get you started with basic operations .

  • Page 57: Introduction

    Introduction Thank you for purchasing your new AT&T Internet Air for Business Wi-Fi Extender . About the user guide The following topics explain how best to use this guide to get the most out of your extender . Before using your extender Read the Safety Information Guide that came with your device thoroughly for proper usage .

  • Page 58: Setting Up Your Extender

    Setting up your extender The following instructions give you all the information you need to set up your AT&T Wi-Fi Extender for the first time . Features and functions These topics illustrate your extender’s features and key functions . Status 2 .5 GbE LAN Lights 1 GbE LAN...
  • Page 59 Feature Description Illuminated components indicating the status of the LED Status Lights extender’s functionality, see “Mesh LED Status Lights” on page 62 . Press the Wi-Fi Protected Setup (WPS) button to connect WPS capable devices . 2 .5 GbE LAN 2 .5 Gigabit ethernet port .

  • Page 60: Led Status Lights

    LED Status Lights The status lights located on the front of the device indicate the status of the Wi-Fi Extender’s functions . • The Mesh LED Status Lights indicate the network signal strength and status . • The Wi-Fi LED Status Lights indicate the Wi-Fi connection and WPS status . •...

  • Page 61: Connecting Your Extender

    Connecting your extender The instructions below explain how to connect and set up your extender . Plug in the extender Using the power adapter (included), plug in the extender by inserting the connector at the end of the power cable into the DC Power Port on the extender .

  • Page 62: Powering Up

    Powering up Wait for the extender to power up . Once the extender is powered up, the LED Status Lights will turn solid . This will take approx . 2-3 minutes . Network signal status Verify the extender is receiving a network signal . The Mesh LED Status Lights will be solid green when the extender is receiving a strong wireless network signal .

  • Page 63: Adding An Extender To The Network

    Adding an extender to the network You can connect your extender to the gateway’s Wi-Fi or Ethernet . Pair wirelessly using WPS 1 . Ensure both your 5G Gateway and Extender are powered on, and your 5G Gateway is connected to the AT&T cellular network . 2 .
  • Page 64 Note: Connection with AT&T Internet Air™ for Business 5G Gateway required (gateway and internet service sold separately) .

  • Page 65: Pair Using Ethernet

    Pair using Ethernet 1. Connect one end of an Ethernet cable in the main gateway port of your choice. 2. Connect the other end to the Ethernet port of your choice on your extender. 3. The Mesh LED will illuminate solid green when a Mesh connection is established.

  • Page 66: Wi-Fi Extender Placement And Proximity

    Wi-Fi extender placement and proximity The extender should be placed within wireless range of the 5G gateway, no more than 30 feet away . The design and structure of your environment may impact performance . For best results, position the extender closer so the Mesh LED illuminates green . Extenders can connect to your gateway directly or chain together to seamlessly expand your network reach .

  • Page 67: Connecting Your Devices

    Connecting your devices Connecting your devices to the extender’s Wi-Fi or Ethernet ports . See “Connecting your devices” on page 13 . Network name & password The extender will share the same network name and password as the 5G gateway it’s paired with . Web UI Settings You can configure additional settings from the Web UI of your 5G gateway .

  • Page 68: Basic Operations

    Basic operations The following topics outline basic features and operations of your extender .

  • Page 69: Wi-Fi Extender Dashboard

    Wi-Fi Extenders Dashboard The Web UI (Web User Interface) allows you to configure the Wi-Fi Extender settings, and see status from the user-friendly dashboard . Accessing your dashboard 1 . With your connected device, use your preferred web browser to access the Web UI, see “Web User Interface”...

  • Page 70: Extender Details

    Extender Details The Wi-Fi Extender Device List allows you to visualize how the extenders are connected back to the 5G Gateway . Here you can view the Extender Name, MAC address, and Parent device .

  • Page 71: Actions

    Actions Rename Extander 1 . Click Edit , type the desired name of your extender and click Apply 2 . Click Save...
  • Page 72 Check for update 1 . Click Check for update to generate a result status . a . When the firmware is up to date the status will read, “The current firmware is the latest version .” b . When the firmware needs to be updated the button will change to “Update available”...
  • Page 73 Factory Reset Reset your extender to original factory settings . Warning: Performing a factory reset will restore the extender to original factory settings and unpair it from your 5G Gateway . 1 . Click Factory reset 2 . An alert box will appear, click Yes to continue, or Cancel to cancel the factory reset .

  • Page 74: Faqs, Technical Specifications, Troubleshooting

    FAQs, Technical Specifications, Troubleshooting The topics in this section will cover troubleshooting tips and extender specifications .

  • Page 75: Common Issues

    Common Issues Troubleshooting Check below for solutions to common problems you may experience . Problem: I’m unable to add an extender to the network . Solution: Before pairing your extender, be sure to allow both the gateway and extender to fully power on and the LEDs to turn solid . You can also try pairing using the wired method with Ethernet .

  • Page 76: Specifications

    Specifications The following tables list your extender’s specifications . Wi-Fi Extender specifications Specification Description Model APM7210D 2 .4GHz/5GHz 802 . 1 1 a/b/g/n/ac/ax/be (Wi-Fi Wi-Fi 2x2 MIMO Certifications FCC, UL, Wi-Fi CERTIFIED 7, Easy Mesh Dimensions 200mm x 96mm x 133mm Weight ~2 lbs or 900g Operating Temperature...

  • Page 77: Regulatory And Warranty

    Regulatory and Warranty The topics in this section will detail important regulatory and warranty information .

  • Page 78: Disposal And Recycling

    Disposal and Recycling Do not dispose of the gateway in a household garbage bin . This product must be taken to specific collection places or sites . You can learn more about how to recycle your device by visiting the CTIA website at www.ctia.org/news/how-to-recycle-your-mobile-device .

  • Page 79: Regulatory Agency Identification

    Regulatory agency identifications FCC Regulations This device complies with Part 15 of the FCC Rules . Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation .

  • Page 80: Rf Exposure Information

    RF Exposure Information This equipment must be installed and operated with a minimum distance of 25 centimeters between the radiator and any nearby person . FCC Responsible Party: ASKEY COMPUTER CORP . 10F, No . 1 19, Jiankang Rd . Zhonghe District New Taipei City 23585, Taiwan, R .O .C .

  • Page 81: Warranty

    Warranty Warranty duration: The product may consist of several parts, which may have separate warranty periods, to the extent permitted by local laws . The “Warranty Period” (as defined in the table below) takes effect on the date of purchase of the product (as indicated on the proof of purchase) or date of product delivery and activation (if required), whichever is later .
  • Page 82 manufacturing defects . The Warranty does not apply in the following cases: 1 . Normal wear and tear of the product requiring periodic repair and replacement . 2 . Defects and damages due to negligence, to the product being used other than in a normal and customary manner, to the non-compliance with the recommendations of this User Manual, to an accident, regardless of the cause .

  • Page 83: Licenses

    8 . Installation and use of the product in a manner that does not comply with the technical or security standards of regulations in force in the country where it’s installed or used . 9 . Modification, alteration, degradation or illegibility of the serial number of the product .

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