Hi all,
I'm running into an issue where the iOS Webex app has suddenly stopped connecting to the phone service. As a result, users are no longer able to make or receive calls through the app.
As far as I know this started happening out of the blue earlier today—no recent changes were made to our CUCM environment or phone stack.
Error message in the Webex app:
Can't connect to the phone service. Contact your administrator. Error: 1000:1044
1000:1044 ServiceDiscoveryCreateDeviceFailedExtensionNotAssociated
Failed to create device because no extension DN is associated with the userId in CUCM.
CUCM replied with HTTP 601 error.
The troubleshooting I've done so far has confirmed:
The user’s TCT device is still present in CUCM and has a DN assigned.
The TCT device is associated with the correct end user.
The Owner User ID field on the TCT device is correctly set.
Nothing appears to have changed in our CUCM configs.
I haven’t made any changes to the TCT phones or their configurations. It just seems like Webex has stopped recognizing the device or the user association with CUCM.
Has anyone encountered this issue recently, or have any suggestions for troubleshooting further?
Thanks in advance for any insights!
