What are all possible responses that maybe returned in the line_type field of the Phone Verification API response?
|A landline phone number. Not expected to be able to receive SMS messages.
|A phone number associated with a mobile/cellular phone.
|A phone number associated with a pager device.
|A phone number associated with either a fixed or mobile device.
|A toll-free phone number.
|A shared cost phone number.
|A premium rate phone number.
|A virtual phone number.
|A phone number designated for personal use.
|A universal access number, which can route incoming calls to different destinations.
|A phone number that is associated with a voicemail service.
Note: Not all of these line types are returned for every country.