What does SS4 mean in Computing & IT

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All SS4 meanings

What does SS4 stand for?

SS4 stands for "Signalling System 4 (2040/2400 Hz tones)"

How to abbreviate "Signalling System 4 (2040/2400 Hz tones)"?

"Signalling System 4 (2040/2400 Hz tones)" can be abbreviated as SS4

What is the meaning of SS4 abbreviation?

The meaning of SS4 abbreviation is "Signalling System 4 (2040/2400 Hz tones)"

What does SS4 mean?

SS4 as abbreviation means "Signalling System 4 (2040/2400 Hz tones)"