The Smart Modem Gen 3 is Telstra's newest Smart Modem. It uses hybrid technology for your home broadband. It gives you these features:
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Upgraded Wi-Fi: The Telstra Smart Modem Gen 3 has Wi-Fi 6 technology. You can connect more devices at higher speeds:
- Stream on up to 12 devices at the same time
- Up to 4 times more Wi-Fi capacity
- Up to 60% faster than the previous Telstra modem
- Longer battery life for your connected devices
- Connect sooner: You can get online before your home broadband is activated. The modem has a built-in, pre-activated SIM that connects to the Telstra mobile network when you first turn it on.
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Built-in backup: If your home broadband stops because of network upgrades or bad weather, the modem automatically changes to the Telstra mobile network. You are online again in minutes, if 4G coverage is available.
Mobile speeds are limited to 6/1 Mbps and change with local conditions and content. To get uncapped speeds, put in your own full-size Telstra data SIM.
Model: Cobra XH
The lights on your Telstra Smart Modem Gen 3 show the status of your internet connection. Use them to help find the cause of a connection problem.
The lights are the same as the lights on the Gen 2. For more information, refer to What do the lights on your Telstra Smart Modem Gen 2 mean?
If you have the first-generation Telstra Smart Modem or the Telstra Gateway Frontier, refer to Telstra Smart Modem (first generation) and Telstra Gateway Frontier lights.
If you have a problem with your internet connection, contact IT Solver at support@itsolver.net or 07 3123 6000. We are independent of Telstra.
The image above shows the front light indicators of the Telstra Smart Modem.
Front light indicator
- Green: The modem is connected to the fixed network.
- Blue: The modem is connected to 4G backup or Home Wireless Voice.
- Red: The modem has no connection.
- Orange: The modem is trying to connect.
- White: The modem is starting up.
- No light: The modem is offline.
Back light indicator
- Green: The 4G mobile signal strength is great.
- Orange: The 4G mobile signal strength is good.
- Red: The 4G mobile signal strength is weak.
Detailed descriptions of the Gen 3 lights
| Light | Behaviour | Cause |
|---|---|---|
| Front light | Off | Powered off |
| Green | Fixed connection online | |
| Blue | Mobile connection online | |
| White | Powered on, starting up | |
| White, flashing | Firmware upgrade. Flashes every 0.5 seconds until the download is complete. | |
| Orange | Start-up is complete and the modem is trying to connect, or the fixed connection is lost and the modem is trying to reconnect before it changes to mobile | |
| Red | The fixed and mobile connections failed. The modem is trying to connect on both. | |
| Colour cycle | Factory reset. The colour changes every 0.5 seconds. | |
| ONLINE | Green | Fixed or mobile broadband online |
| Orange | ADSL captive portal (newdsluser) | |
| Red | PPP authentication failure | |
| Off | Fixed and mobile offline | |
| WAN/DSL | Green | Ethernet connected or DSL synchronised |
| Green, slow flash | DSL synchronisation started | |
| Green, fast flash | DSL synchronisation finishing | |
| Off | No fixed physical connection | |
| MOBILE MODE | Green | Mobile online. This is normal when the modem uses mobile backup (the front light is blue). |
| Off | Mobile offline. This is normal when the nbn connection is online (the front light is green). | |
| MOBILE SIGNAL | Green | Good signal |
| Orange or yellow | OK signal | |
| Red | Poor signal | |
| Off | Telstra network not available | |
|
PHONE (SIP mode) |
Green | Registered |
| Green, flashing | DECT handset or FXS off-hook. Flashes every 1 second. | |
| Red | Cannot make a call | |
| Orange | Emergency (SOS) calls only. The fixed and Telstra mobile connections are not available. | |
| Off | Not registered, for example no SIP credentials | |
|
PHONE (PSTN mode) |
Green | Voltage detected on the PSTN port |
| Green, flashing | DECT handset off-hook. Flashes every 1 second. | |
| Off | No voltage detected on the PSTN port | |
| WI-FI | Green | On |
| Off | Off | |
| PAIR | Green | DECT paired or WPS paired |
| Green, flashing | Pairing mode. Flashes every 0.5 seconds. | |
| Green, flashing | Paging mode. Flashes every 2 seconds. | |
| Red | WPS timed out or failed |
Telstra Smart Modem (first generation) and Telstra Gateway Frontier lights
The first-generation Telstra Smart Modem and the Telstra Gateway Frontier also have a SIM card for the Connect sooner and built-in backup features. Mobile speeds are limited to 6/1 Mbps and change with local conditions and content.
The lights on these modems are different from the Gen 2 and Gen 3 lights. Use these tables.
Power, Wi-Fi and Pair lights
| Function | Light colour | Description |
|---|---|---|
| Power | Solid blue | Firmware upgrade in progress |
| Solid green | Powered on | |
| Solid red | The modem has overheated | |
| Off | Power switched off | |
| Wi-Fi | Solid green | 2.4 GHz or 5 GHz Wi-Fi is on |
| Solid green | Telstra Air is broadcasting | |
| Off | 2.4 GHz and 5 GHz Wi-Fi are off | |
| Pair | Solid green | DECT registered or WPS paired |
| Flashing white | DECT and WPS in pairing mode | |
| Flashing blue | DECT paging | |
| Intermittent fast flashing red | WPS session overlap | |
| Fast flashing red | WPS error | |
| Off | Not paired |
Top lights
| Function | Light colour | Description |
|---|---|---|
| Signal / Backup | Solid green | Great 4G signal |
| Solid orange | Good 4G signal | |
| Solid red | Poor 4G signal | |
| Off | No 4G signal | |
| Link | Solid white | Trying to detect the DSL carrier signal |
| Solid blue | DSL carrier detected, trying to synchronise | |
| Solid green | DSL line synchronised or Ethernet WAN link is up | |
| Off | No physical DSL or Ethernet WAN connection | |
| Online | Solid white | Trying to connect (after the Link light becomes green) |
| Solid blue | Connected with the newdsluser account (ADSL captive portal) | |
| Solid green | Fixed internet connection is working | |
| Solid magenta | Connected through mobile backup | |
| Solid red | PPP authentication failed | |
| Off | No WAN connection | |
| Phone | Solid green | SIP profile is registered and no call is in progress |
| Solid blue | Call in progress | |
| Solid white | Trying to register | |
| Off | SIP client is not set up or is disabled |
FAQ
What is the Telstra Smart Modem Gen 3 and what are its key features?
The Telstra Smart Modem Gen 3 is the latest Telstra modem. It uses hybrid technology. Its key features are Wi-Fi 6, a built-in pre-activated SIM that lets you get online before your home broadband is activated, and automatic backup to the mobile network if the fixed broadband connection is not available.
What are the benefits of Wi-Fi 6 on the Telstra Smart Modem Gen 3?
You can stream on up to 12 devices at the same time. You get up to 4 times more Wi-Fi capacity than previous modems, up to 60% more speed, and longer battery life for your connected devices.
How does the Connect sooner feature work?
You can get online when you receive the modem, before your home broadband service is activated. The modem has a built-in, pre-activated SIM that connects to the Telstra mobile network.
How does the built-in backup work?
If your home broadband connection stops, for example because of network upgrades or bad weather, the modem automatically changes to the Telstra mobile network. You are online again in minutes, if 4G coverage is available in your area.
Are mobile backup speeds limited?
Yes. On mobile backup, speeds are limited to 6/1 Mbps. Speeds also change with local conditions and the content you use. To get uncapped speeds, put in your own full-size Telstra data SIM.
How do the lights show the connection status of my Telstra Smart Modem Gen 3?
The front light shows the connection status: green for the fixed network, blue for mobile backup, red for no connection, orange for trying to connect, white for starting up, and no light for offline. The back light shows the 4G mobile signal strength: green for great, orange for good and red for weak. For more detail, refer to the table in this article.
What does a solid blue front light on the Gen 3 mean?
The modem is connected to the 4G mobile network, as backup or for a Home Wireless Voice service. Your internet connection uses the Telstra mobile network.
What does a solid red front light on the Gen 3 mean?
The modem has no connection. The fixed broadband connection and the mobile backup failed. The modem is trying to connect on both.
Source: Telstra
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