The Aussie will often use the word "mate" in the name of the interlocutor. Especially in the case of an unknown name of the interlocutor or to remember and pronounce "mai"
Australians often use the word "mate" in the name of the caller. Especially in cases that do not recognize the name of the caller name or not, and pronounced "tree house".
Aussie often use the word "mate" in the name of software. Especially in case of unknown name of the partners or can't remember his name and pronunciation, "wood /."