3GPP Scout / Reference / 5GS NAS timers / T3575
TS 24.501NAS timer
In plain words
The AMF starts T3575 when sending NETWORK SLICE-SPECIFIC AUTHENTICATION COMMAND and retransmits the message when the timer expires.
Our summary of the spec text quoted below.
15s In WB-N1/CE mode, 60s For access via a satellite NG-RAN cell, 27s NOTE 12
Source: 3GPP TS 24.501 V20.1.0, clause 10.2, table 10.2.2. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: 24501-k10.zip in the 3GPP archive.
Transmission of NETWORK SLICE-SPECIFIC AUTHENTICATION COMMAND message
Source: 3GPP TS 24.501 V20.1.0, clause 10.2, table 10.2.2. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: 24501-k10.zip in the 3GPP archive.
NETWORK SLICE-SPECIFIC AUTHENTICATION COMPLETE message received
Source: 3GPP TS 24.501 V20.1.0, clause 10.2, table 10.2.2. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: 24501-k10.zip in the 3GPP archive.
Retransmission of NETWORK SLICE-SPECIFIC AUTHENTICATION COMMAND message
Source: 3GPP TS 24.501 V20.1.0, clause 10.2, table 10.2.2. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: 24501-k10.zip in the 3GPP archive.
5GMM-REGISTERED
Source: 3GPP TS 24.501 V20.1.0, clause 10.2, table 10.2.2. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: 24501-k10.zip in the 3GPP archive.
3GPP Scout built this page from TS 24.501 V20.1.0 as indexed on 2026-10-15. The quotes are copied from the spec, and code checks each one against the stored text and the 3GPP archive file before publishing. The plain-words line was written by an AI model (GPT-6 Sol) and checked against the quotes by a second AI model from another company (Claude Opus 5.5). The official 3GPP text governs.