very interesting find

[nc28478]

http://www.ncdhhs.gov/dhsr/EMS/pdf/dtmfref.pdf

pdf format

 

[ILMRadioMan]

You will find that link on the NC Office of EMS Wiki page here.

 

[KE4ZNR]

You will find that link on the NC Office of EMS Wiki page here.

Yep. The DTMF Manual is well known around here but always handy reference guide.
Add in the fact it gets updated pretty often it also tends to be as much of an up to date guide of its type as you will find.

Marshall KE4ZNR