What does SS4 stand for?

Find what does SS4 stand for and its field of usage? SS4 is used in the following field.

All the possible full forms of SS4 are provided below with meaning and definition. User can also visit each expanded form to read detailed definition of SS4 and its example usage.

SS4 » Signalling System 4 (2040/2400 Hz tones) Computing - Telecom Advertisement: More full forms :
SS6 SSA What is the full form of SS4 ? SS4 can be expanded as Signalling System 4 (2040/2400 Hz tones)What does SS4 mean? Meaning of SS4 is Signalling System 4 (2040/2400 Hz tones)