Troubleshooting Your VoIP Phone Adapter (ATA)

VOIP Technology Telephone Adapter

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If you're using an ATA (analog telephone adapter) and a subscription-based VoIP service for your home or small business, you already know that the approach can save a lot of money. Unfortunately, you might also know that, as with any technology, problems sometimes arise. Most of those associated with VoIP calls stem from the ATA, so that's the first place to look when troubleshooting.

For a good diagnosis, you first need to understand what the lights on the ATA mean; they're there to help you figure out what's going on. If they are all working as they should, then the problem is most probably elsewhere and not with the ATA. In this case, check your phone, internet router or modem, connection, and PC configuration.

Here, you'll find ways to troubleshoot common ATA problems, which include:

  • No response from the ATA; power light off, red, or blinking
  • No dial tone on the phone
  • No Ethernet/LAN connection
  • No rings for calls, which go directly to voicemail

Of course, as a last resort, you can call your VoIP service provider, who most likely shipped your ATA when you subscribed.

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Problem: No Response From ATA

Check the lights on your adapter.

  • If all the lights are off, the adapter is simply not powered. Check the electrical plug or adapter. If the electrical connection is working (test this by plugging in something else to that socket) but the adapter still does not respond, then you have some serious power supply problem with your adapter, and it needs replacement or servicing.
  • A red or blinking power light indicates a failure of the adapter to initialize itself properly. Switch off the adapter, unplug it, wait a few seconds, then plug it in again and switch it on. It will reinitialize. Normally, the power light will be red for a few minutes and then turn green.
  • A solid red light can result from using the wrong type of electrical adapter. Check this issue with your supplier's documentation.
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Problem: No Dial Tone

If you pick up your phone and hear nothing, consider the following:

  • Your phone should be plugged into the Phone 1 port of the ATA. A common mistake is to plug it into the Phone 2 port, leaving Phone 1 empty. You should use the Phone 2 port only if you have a second voice line or a fax line. To check that, pick up your phone's handset and press Talk or OK. If you have a single phone and Phone 2 lights up, you have plugged your phone jack into the wrong port.
  • Have you used a proper RJ-11 cord (commonly called a telephone jack)? Check that it's well-seated in the port: When plugging it in, you should hear a click as the little plastic tongue on the side of the cord settles in. That tongue sometimes gets torn off, especially with frequent removal and insertion of the cord. If that happens, replace the cord.
  • If the RJ-11 cord is old, it might not be transmitting data as it should. Again, replace it. These are quite cheap, and many ATA vendors ship two in the package.
  • The problem also might be in your phone set. Try connecting another phone and see if you get a dial tone.
  • Don't connect a phone used with a VoIP adapter to the PSTN wall jack, unless so specified. You won't get a dial tone and could damage your equipment.
  • Check the Ethernet or internet connection, particularly if the Ethernet/LAN connection light is off or red. (See the next step.)

Sometimes, resetting your system (adapter, router, modem, etc.) can help solve a problem.

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Problem: No Ethernet/LAN Connection

VoIP phone adapters connect to the internet through Ethernet/LAN using a cable router or modem, DSL router or modem, and RJ-45 cables and plugs. Any problem with this connection will cause the Ethernet/LAN light to be off or red. If that's the case:

  • Check the cable and its plug. Like the RJ-11 cord discussed previously, the RJ-45 plug should click when plugged into the Ethernet/LAN port.
  • Verify that you've used a straight Ethernet cable, as opposed to a crossover cable. The difference lies in the way the wires inside the cable (eight in all) are arranged. Look at them through the transparent jack: If the wires are arranged in the same color sequence, the cable is straight. Crossover cables have different color arrangements on the two ends.
  • Make sure that you have an active Internet connection by checking your router, modem, or LAN. Failure on this end means you'll have to troubleshoot your modem or router or contact your ISP (internet service provider).
  • Check the network configuration if your ATA is connected to a LAN. Many settings are involved, such as IP addresses, access rights, etc.; the network administrator of the LAN is the best person to help you.
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Problem: Calls Go Directly to Voicemail Without Ringing Your Phone

The call is actually received, but you don't pick it up because you don't hear a ring — so it goes to voicemail. To solve this:

  • Check your ringtone volume.
  • Check that your phone set is connected to the Phone 1 port.

Another possible issue: Your phone's loudspeaker, normally found inside the casing, could be damaged or have a loose wire or failed welding.