name: TCP
full_form: Transmitted Carrier Power
context: requests and responses from the P-CSCF; or b) for TCP, the bidirectional flow is the TCP connection between the UE and the P-CSCF. This TCP connection was established by the UE, i.e. from the UE's protected client port and the UE's IP address to the P-CSCF's protected server port and the P-CSCF's IP address. This TCP connection is used to exchange SIP messages between the UE and the P-CSCF; and 2) set the security association lifetime to the longest of either the previously existing security association lifetime (if available), or the lifetime of the just completed registration plus 30 seconds. NOTE 3: If the UE receives Authentication-Info, it will proceed as described in RFC 3310. When a 401 (Unauthorized) response to a REGISTER is received the UE shall behave as described in subclause 5.1.1.5.1. [TS 24.229, clause 5.1.1.5.1]: Authentication is performed during initial registration. A UE can be re-authenticated during subsequent reregistrations, deregistrations or registrations of
description: TCP (Transmission Control Protocol) is a transport-layer protocol that ensures reliable, error-checked, and sequential delivery of data between devices over IP networks. In the context of 3GPP TS 34.229, TCP is used for establishing a connection between the UE (User Equipment) and the P-CSCF (Proxy-Call Session Control Function) to exchange SIP messages.
explanation: TCP is classified as a Protocol because it defines the rules and procedures for communication between network entities, specifically the UE and the P-CSCF, ensuring reliable data transfer for SIP signaling in this 3GPP standard.
section_title: 8.1.2Conformance requirement
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