name: SCTP
full_form: Stream Control Transmission Protocol
context: signalling. - At least one pair of stream identifiers over one or several SCTP associations shall be reserved for the sole use of XnAP elementary procedures that utilize UE-associated signallings. However, a few pairs (i.e. more than one) should be reserved. - For a single UE-associated signalling, the NG RAN nodes shall use one SCTP association and one SCTP stream and the SCTP association/stream should not be changed during the communication of the UE-associated signalling unless current SCTP association is failed or removed, or TNL binding update is performed. Transport network redundancy may be achieved by SCTP multi-homing between two end-points, of which one or both is assigned with multiple IP addresses. SCTP end-points shall support a multi-homed remote SCTP end-point. For SCTP endpoint redundancy an INIT may be sent from one NG-RAN node, at any time for an already established SCTP association, which shall be handled as defined in IETF RFC 4960 [2] in sub clause 5.2. The SCTP
description: Stream Control Transmission Protocol (SCTP) is a transport-layer protocol that provides reliable, connection-oriented data transfer between network nodes. It is used for signalling and supports multi-homing and endpoint redundancy.
explanation: The text explicitly states that SCTP is a transport layer protocol used for signaling, indicating its function in establishing and managing communication between network entities.
section_title: 7Transport layer
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