Signalling

Dual Tone Multi Frequency


Dual Tone Multi Frequency 0


Dual Tone Multi Frequency 1


Dual Tone Multi Frequency 2


Dual Tone Multi Frequency 3


Dual Tone Multi Frequency 4


Dual Tone Multi Frequency 5


Dual Tone Multi Frequency 6


Dual Tone Multi Frequency 7


Dual Tone Multi Frequency 8


Dual Tone Multi Frequency 9


Dual Tone Multi Frequency A


Dual Tone Multi Frequency B


Dual Tone Multi Frequency C


Dual Tone Multi Frequency D


Dual Tone Multi Frequency Pound


Dual Tone Multi Frequency Star

Multi-frequency


Multi-frequency 0


Multi-frequency 1


Multi-frequency 2


2600 hertz


Multi-frequency 3


Multi-frequency 4


Multi-frequency 5


Multi-frequency 6


Multi-frequency 7


Multi-frequency 8


Multi-frequency 9


Multi-frequency KP


Multi-frequency KP2


Multi-frequency ST


Multi-frequency ST2


Multi-frequency ST3

Special Information Tone


Special Information Tone - Future Use


Special Information Tone - Intercept


Special Information Tone - Ineffective/Other


Special Information Tone - No Circuit - intraLATA *****


Special Information Tone - No Circuit - interLATA *****


Special Information Tone - Reorder - intraLATA *****


Special Information Tone - Reorder - interLATA *****


Special Information Tone - Vacant Code


Repeating Special Information Tone

Progress Signaling


Busy Signal


Reorder Tone


Off hook tone