Timer value
6s In WB-S1/CE mode, 14s NOTE 4
Source: 3GPP TS 24.301 V20.1.0, clause 10.3, table 10.3.1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: 24301-k10.zip in the 3GPP archive.
3GPP Scout / Reference / EPS NAS timers / T3492
TS 24.301NAS timer
Timer T3492: EPS session management, UE side
In plain words
The UE starts T3492 when it sends a PDN DISCONNECT REQUEST and retransmits the request when the timer expires.
Our summary of the spec text quoted below.
What the spec says
Started when
PDN DISCONNECT REQUEST sent
Source: 3GPP TS 24.301 V20.1.0, clause 10.3, table 10.3.1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: 24301-k10.zip in the 3GPP archive.
Stopped when
DEACTIVATE EPS BEARER CONTEXT REQUEST received or PDN DISCONNECT REJECT received
Source: 3GPP TS 24.301 V20.1.0, clause 10.3, table 10.3.1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: 24301-k10.zip in the 3GPP archive.
On expiry
Retransmission of PDN DISCONNECT REQUEST
Source: 3GPP TS 24.301 V20.1.0, clause 10.3, table 10.3.1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: 24301-k10.zip in the 3GPP archive.
State
PROCEDURE TRANSACTION PENDING
Source: 3GPP TS 24.301 V20.1.0, clause 10.3, table 10.3.1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: 24301-k10.zip in the 3GPP archive.
How this page was made
3GPP Scout built this page from TS 24.301 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.