3GPP Scout / Reference / 5GS NAS timers / T3565
TS 24.501NAS timer
In plain words
The AMF starts T3565 when sending NOTIFICATION and retransmits the message when the timer expires.
Our summary of the spec text quoted below.
6s In WB-N1/CE mode, 24s For access via a satellite NG-RAN cell, 11s 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 NOTIFICATION 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.
SERVICE REQUEST message received CONTROL PLANE SERVICE REQUEST message received NOTIFICATION RESPONSE message received REGISTRATION REQUEST Message received DEREGISTRATION REQUEST message received NGAP UE context resume request message as specified in 3GPP TS 38.413 [31] 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 NOTIFICATION 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.