NBC Universal is trying to run a search service job to add a phone to existing user and line. They have the "Line on Device Settings" enabled in the Phone template and also in the Site Template and they want to use a DN Pool External Phone Number Mask. Since it's an existing Line, the DN Pool option doesn't appear so the external phone number mask does not get configured even if it is set in the Site Template.
Client would like the ability to use the DN Pool External Phone Number Mask with Existing Line Template.