From Harry Newton, author of the authoritative industry resource, Newton's Telecom Dictionary, an excerpt from the Thank You page...
“Special thanks also to Jane Laino of DIgby 4 Group, NYC, the best telecom consultants in the world.”

From Mordechay Be Baruch, Director of Communications, of Government of Israel, Ministry of Defense Mission to the U.S., Israeli Defense Mission...
“Jane, for me these four years working with you were very productive, and I learned a lot from you and your staff. I'm sure that Israel Defense Mission received the best consultations from you and your staff, and saved a lot of money.”

From Vedula Sitaram, regarding "The Telecom Tutorials" book…
"Hello Madam, Good Morning. I recently prchased your book "The Telecom Tutorials". It was good. I am a communication enginner. I know the concept of coding/decoding, multiplixing, PBX, how telephone works etc. Your book gave me little bit more information about 'where' the switch is located(in local carrier's CO)."