AA       International Telephone Access Code
AB       Joint Facsimile and Phone Number
AC       Message Only Voice Number
AD       Delivery Location Phone
AP       Alternate Telephone
AS       Answering Service
AU       Defense Switched Network
BN       Beeper Number
BT       BTX Number
CA       Cable
CP       Cellular Phone
DN       Defense Data Network (DDN)
ED       Electronic Data Interchange Access Number
EM       Electronic Mail
EX       Telephone Extension
FT       Federal Telecommunications System (FTS)
FU       Facsimile User Identifier
FX       Facsimile
HF       Home Facsimile Number
HP       Home Phone Number
IT       International Telephone
MN       Modem Number
NP       Night Telephone
OF       Other Residential Facsimile Number
OT       Other Residential Telephone Number
PA       Appointment Phone
PC       Personal Cellular
PP       Personal Phone
PS       Packet Switching
SP       Showing Phone
TE       Telephone
TL       Telex
TM       Telemail
TN       Teletex Number
TX       TWX
UR       Uniform Resource Locator (URL)
VM       Voice Mail
WC       Work Cellular
WF       Work Facsimile Number
WP       Work Phone Number