If a call does not arrive directly to the user but via forwarding, an incorrect phone number (e.g. that of the forwarding party instead of the original caller) may be displayed.
- Incorrect signaling by the TC system/PBX.
- In the UCServer administration it was configured that the Connected-ID should be ignored..
Checking possible causes
- Examine the call number signaling with the TAPI-Test-Tool Ephone:
- In the UCServer administration under "Location – Properties" first display the Advanced Settings, then under "Formatting" uncheck "Ignore Connected ID".
Example screenshot UCServer Administration – Location Settings – Ignore Connected ID
Taken from the ECSTA for Avaya IPOffice: Since the phone number information signaled by Avaya IP Office regarding the forwarding subscriber or forwarding destination are inconsistent, the Redirecting and Redirection DeviceID are not provided by the driver.