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Internal Server Error on Cisco IP Phones and ATA Adapters
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Internal Server Error on Cisco IP Phones and ATA Adapters

When Cisco SPA phone or ATA adapter reads internal server error and prevents you from dialing out, lift the handset, and dial * 6 8. Learn more.

Symptom

Your Cisco SPA phone or ATA adapter reads Internal Server Error and prevents dialing out.

Applies To

Cisco SPA phones, Cisco ATA adapters

Resolution

Star Code Correction

  1. Lift handset (or initialize speakerphone).
  2. Dial * 6 8.
  3. Hang up.
  4. Wait about 30 seconds, then attempt dial out again.

Cause

Most likely, you may have attempted to use (or inadvertently dialed) an invalid or unsupported "star code," such as * 6 7 or * 6 9, which is known to cause this error.

See below for lists of supported star codes for:

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