Q.931

What is Q.931?

Definition and meaning of Q.931

Q.931 is an Integrated Services Digital Network (ISDN) sign connection manipulate Protocol this is an International Telecommunication Union (ITU)-T Recommendation.

What Does Q.931 Mean?

Q.931 and TCP/IP work at different Layers and proportion few Functions. Q.931 has dependable layers however does now not provide retransmission or drift manage. Q.931 Frame factors are as follows:

• Protocol discriminator (PD): Specifies connection Signaling protocol.
• Call reference cost (CR): Addresses conCurrent connections.
• Message type (MT): Specifies 3-message layer type (i.E., name setup, launch and feature manage) from Q.931 name manage message set.
• InFormation elements (IE): Specifies additional message info, that is, name, period and Variable content Field.

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