name: FQDN
full_form: Fully Qualified Domain Name
context: A telescopic FQDN is an FQDN with a single label as the first element and the SEPPâs domain as the trailer component. The label uniquely represents the original FQDN. NOTE 3: The structure of telescopic FQDN is defined in 3GPP TS 23.003 [19], clause 28.5.2. The SEPP shall generate a telescopic FQDN for the following messages received over N32-f: a. Nnrf_NFDiscovery_Get response HTTP message with FQDNs of a set of the discovered NF or NF service instance(s) (see TS 29.510 [68]). The cSEPP generates a telescopic FQDN for each target Network Function FQDN in the Discovery response, rewrites the original FQDN with the telescopic FQDN and forwards the modified Discovery response to the NRF. b. Subscription message with the Callback URI in the payload of the message (see TS 29.501 [94]). The pSEPP generates a telescopic FQDN from the Callback URI in the Subscription message, rewrites the original FQDN in the callback URI, and forwards the modified Subscription message to the producer Network
description: A Fully Qualified Domain Name (FQDN) is a critical network attribute used for identifying and addressing network functions or services within the telecommunications infrastructure. In the context of 3GPP TS 33.501, FQDNs are utilized in TLS protection mechanisms, specifically with telescopic FQDNs and wildcard certificates, to ensure secure communication between network elements.
explanation: The provided text describes an FQDN as a parameter used for network identification and addressing within the telecommunications infrastructure, particularly in 3GPP TS 33.501's TLS protection mechanisms.
section_title: 13.1.1.1	TLS protection based on telescopic FQDN and wildcard certificate
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