Your Cisco desk phone or SPA adapter reads Internal Server Error on the display and prevents dialing out.
Cisco desk phones and SPA adapters
Correct Invalid Star Code Entry
- Lift the handset.
- Dial [*].
- Hang up.
- Wait 30 seconds, then attempt to dial out again.
Please remember that *67 (caller ID blocking) and *69 (last number call back) are not supported on 8x8 service.
This is usually caused by keying in an invalid or unsupported star code, such as *67 or *69, which are known to cause this error. Click here for a list of Cisco SPA star codes.