Connection-Oriented Network Service

CONS, Connection-Oriented Network Service, is one of the two OSI network layer protocols, the other being CLNS (Connectionless Network Service). It is basically X.25, with a few adjustments.

Protocols providing CONS

Some protocols that provide the CONS service:

• X.25, as specified in ITU-T Recommendation X.223 is a Public Data Network protocol that provides the Connection Oriented Network Service as described in ITU-T Recommendation X.213.
• Signalling Connection Control Part (SCCP), as specified in ITU-T Recommendation Q.711 is a Signaling System 7 protocol that provides the Connection Oriented Network Service as described in ITU-T Recommendation X.213.
• Service Specific Connection Oriented Protocol (SSCOP), as specified in ITU-T Recommendation Q.2110 is an Asynchronous Transfer Mode protocol that provides the Connection Oriented Network Service as described in ITU-T Recommendation X.213.