In CUCM if we add update UDP’s or devices with Extension Mobility IP Phone Services subscribed, the import process appends another IP Phone Service, so you could end up with multiple IP Phones Services subscribed. Hence when the phone user press the Services button on the IP Phone, the menu displays more than one instance of the IP Phone Service, in this case Extension Mobility.

One way to prevent the IP Phones Services from being duplicated or appended to the Device or UDP is to make sure the import process deletes all IP Phones Services before adding the IP Phone Service from your CSV or TXT file.

Under Override Options check the box “Override the existing configuration”

Then check the box Delete all existing Subscribed Services before adding new ones”

If you already have duplicate IP Phone Services subscribed to Devices to UDPs. Go to the Bulk Administration Menu and select the Devices (or UDP) then select Update Phones. Use Update via Query.

If you then check the phones or UDPs, you will now only have one subscription of the IP Phone Service.