What Q.931 message cannot be received in response to sending a Q.931 SETUP message?

What Q.931 message cannot be received in response to sending a Q.931 SETUP message?

What Q.931 message cannot be received in response to sending a Q.931 SETUP message?

A.
Progress

B.
USER Information

C.
Call Proceeding

D.
Alerting

E.
Connect



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