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Reply To: Call waiting, Holding service


Thank you Pix for the answer,
it means that signaling can use as well TCH
I didn’t know that
If I take the example of an SMS,
SDCCH is used on Idle mode, and SACCH on Active mole. I believed that it was the same for the call waiting signaling (I believed that the signal that tell there is an other call go through SACCH) but it seems not.