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Tele-Communication (Telecom) Terms Glossary and Dictionary
Q.931
Q.931, the network layer protocol in the telecommunication architecture, is used in ISDN for call establishment and the maintenance and termination of logical network connections between two devices. Q.931 is one of the network layer (layer 3) protocols in the telecommunication architecture specified by the ITU Q series documents Q.930 through Q.931.
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