Please enter the search related information in the fields below. Partial information works, e.g. "SP-21" in the "tdoc" field lists all TSG SA documents from 2021. Regular expressions mostly work in all fields (e.g. "2[34].501" in the "Spec" field lists all documents related to 23.501 and 24.501. Capitalization is disregarded, i.e. "3GPP" gives the same results as "3gpp".
Download results in JSON format
| tdoc | Title | Type / Revs | Source | Spec / CR | S/WID | Release | Meeting | Status | Links |
|---|---|---|---|---|---|---|---|---|---|
| S2-2504534 | LS from SA WG4: LS on Avatar Security Aspects |
LS in source LS: S4-250715 LS To: SA WG3 |
SA WG4 | AvCall-MED | Rel-19 |
S2-169 AI: 19.2.2 |
postponed | [WTS] [JSN] | |
| S2-2504581 | LS from GSMA TSG IMSDCAS: LS to SA WG2 About Requirements Concerning Automatic Resume Where You have Left Off |
LS in source LS: IMSDCAS022_005v5 LS To: SA WG2 LS reply in S2-2505953 revision of S2-2502847 |
GSMA TSG IMSDCAS |
S2-169 AI: 19.2.2 |
replied to | [WTS] [JSN] | |||
| S2-2504634 | LS from SA WG4: LS on Advanced MF capability registration and discovery |
LS in source LS: S4-250746 LS To: SA WG2, CT WG4 LS reply in S2-2505955 |
SA WG4 |
S2-169 AI: 19.2.2 |
replied to | [WTS] [JSN] | |||
| S2-2504635 | LS from SA WG3-LI: LS on LI requirements on IMS Data Channel |
LS in source LS: S3i250185 LS To: SA WG4, SA WG2 |
SA WG3-LI | LI19 | Rel-19 |
S2-169 AI: 19.2.2 |
postponed | [WTS] [JSN] | |
| S2-2504638 | Clarification of the NG_RTC_Ph2 KI#4 procedure description |
CR revision of S2-2503099 |
Nokia | 23.228 19.2.0 CR#16181 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
not treated | [WTS] [JSN] |
| S2-2504639 | Aligning MF selection criteria with 23.228 |
CR revision of S2-2503100 revised to S2-2505454 |
Nokia | 23.502 19.3.0 CR#54141 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] |
| S2-2504640 | [DRAFT] LS on Advanced MF capability registration and discovery |
LS out LS To: SA WG4 |
Nokia | SR_IMS |
S2-169 AI: 19.2.2 |
not treated | [WTS] [JSN] | ||
| S2-2504770 | KI#8: Updates to services and operations |
CR revision of S2-2502910 |
Ericsson | 23.228 19.2.0 CR#16021 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
not treated | [WTS] [JSN] |
| S2-2504771 | KI#8: Corrections to Avatar procedures |
CR revision of S2-2502911 |
Ericsson | 23.228 19.2.0 CR#16031 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
not treated | [WTS] [JSN] |
| S2-2504772 | KI#3: Update to DC interworking with MTSI UE |
CR revision of S2-2502912 revised to S2-2505456 |
Ericsson | 23.228 19.2.0 CR#15393 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] |
| S2-2504773 | KI#2: Correcting Information Retrieval | CR | Ericsson | 23.228 19.2.0 CR#1646 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
not treated | [WTS] [JSN] |
| S2-2504774 | KI#2: Corrections to DC AS initiated Session Update to add BDC to an existing IMS session |
CR revision of S2-2502914 |
Ericsson | 23.228 19.2.0 CR#16051 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
not treated | [WTS] [JSN] |
| S2-2504775 | KI#2: Corrections to DC AS initiated Standalone ADC Session Creation |
CR revision of S2-2502915 |
Ericsson | 23.228 19.2.0 CR#16061 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
not treated | [WTS] [JSN] |
| S2-2504776 | KI#2: Corrections to DC AS initiated IMS Session Update Procedures |
CR revision of S2-2502916 |
Ericsson | 23.228 19.2.0 CR#16071 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
not treated | [WTS] [JSN] |
| S2-2505032 | De-multiplexing ADC to avoid multiplexing ADCs with same stream ID |
CR revision of S2-2503578 |
Vivo | 23.228 19.2.0 CR#15842 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
not treated | [WTS] [JSN] |
| S2-2505033 | Adding more event filters for ADC media type |
CR revision of S2-2503580 |
Vivo | 23.228 19.2.0 CR#15443 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
not treated | [WTS] [JSN] |
| S2-2505034 | Update on support of DC interworking |
CR revision of S2-2503581 revised to S2-2505457 |
Vivo | 23.228 19.2.0 CR#14655 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] |
| S2-2505035 | Modification on general description for standalone IMS DC session |
CR revision of S2-2503582 revised to S2-2505460 |
Vivo | 23.228 19.2.0 CR#15463 catD | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] |
| S2-2505044 | MDC2 endpoint indication for Avatar Represenation downloading |
CR revision of S2-2503289 |
Qualcomm Incorporated, Ericsson | 23.228 19.2.0 CR#16211 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
not treated | [WTS] [JSN] |
| S2-2505045 | Generlization of MF capabilities registration and discovery |
CR revision of S2-2503310 |
Qualcomm Incorporated | 23.502 19.3.0 CR#54291 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
not treated | [WTS] [JSN] |
| S2-2505082 | Update IMS SBA description to align with other specifications |
CR revision of S2-2503553 |
Huawei, HiSilicon | 23.228 19.2.0 CR#16251 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
not treated | [WTS] [JSN] |
| S2-2505083 | Correction on standalone data channel description |
CR revision of S2-2503555 revised to S2-2505461 |
Huawei, HiSilicon | 23.228 19.2.0 CR#16271 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] |
| S2-2505084 | Update network centric call flow for Avatar Communication |
CR revision of S2-2503556 |
Huawei, HiSilicon | 23.228 19.2.0 CR#16281 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
not treated | [WTS] [JSN] |
| S2-2505085 | [DRAFT] Reply LS on MF Capabilities from SA WG4 |
LS out LS To: SA WG4 |
Huawei, HiSilicon | SR_IMS | Rel-19 |
S2-169 AI: 19.2.2 |
not treated | [WTS] [JSN] | |
| S2-2505177 | Adding BDC Procedure Update | CR | ZTE | 23.228 19.2.0 CR#1647 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
not treated | [WTS] [JSN] |
| S2-2505178 | Clarification on Standalone DC Procedure |
CR revised to S2-2505462 |
ZTE | 23.228 19.2.0 CR#1648 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] |
| S2-2505179 | Clarification on NRF Service Related to MF |
CR revision of S2-2503682 |
ZTE | 23.502 19.3.0 CR#54671 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
not treated | [WTS] [JSN] |
| S2-2505180 | Add DC Application Server Description | CR | ZTE | 23.228 19.2.0 CR#1649 catB | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
not treated | [WTS] [JSN] |
| S2-2505181 | Clarification on MF Profile |
CR revised to S2-2505453 |
ZTE | 23.228 19.2.0 CR#1650 catB | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] |
| S2-2505182 | [DRAFT] Reply LS on Advanced MF capability registration and discovery |
LS out LS To: SA WG4 revised to S2-2505455 |
ZTE | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] | |
| S2-2505183 | KI#1: Corrections to IMS Subscribe/Notify Framework Architecture |
CR revision of S2-2504210 |
[Ericsson, Nokia,] ZTE, [Huawei] | 23.228 19.2.0 CR#16013 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
postponed | [WTS] [JSN] |
| S2-2505203 | Updates on procedure and service of DC interworking via DC AS |
CR revision of S2-2503755 revised to S2-2505458 |
China Mobile, Huawei, Hisilicon | 23.228 19.2.0 CR#15513 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] |
| S2-2505204 | Clarification on PSI configuration on UE |
CR revision of S2-2503756 revised to S2-2505463 |
China Mobile, Huawei, Hisilicon | 23.228 19.2.0 CR#16371 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] |
| S2-2505205 | Clarification on usage of Avatar ID |
CR revision of S2-2503757 |
China Mobile, Huawei, Hisilicon | 23.228 19.2.0 CR#16381 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
not treated | [WTS] [JSN] |
| S2-2505206 | Updates on HSS Nhss_ImsEventExposure service |
CR revision of S2-2503758 |
China Mobile, Huawei, Hisilicon | 23.228 19.2.0 CR#15882 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
not treated | [WTS] [JSN] |
| S2-2505207 | Correction to 3GPP PS Data Off Exempted Services for DC interworking | CR | China Mobile, Huawei, Hisilicon | 23.228 19.2.0 CR#1651 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
not treated | [WTS] [JSN] |
| S2-2505259 | KI#3: Updates on the ADC Interworking via DC AS procedure |
CR revision of S2-2503167 |
Samsung | 23.228 19.2.0 CR#15982 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
merged | [WTS] [JSN] |
| S2-2505260 | MMTel media removal clarification |
CR revision of S2-2503697 |
Samsung | 23.228 19.2.0 CR#15773 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
merged | [WTS] [JSN] |
| S2-2505262 | KI#1: Corrections to IMS Subscribe/Notify Framework Architecture |
CR revision of S2-2504210 revised to S2-2505464 |
[Samsung], Ericsson, Nokia, ZTE, Huawei | 23.228 19.2.0 CR#16014 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] |
| S2-2505264 | Clarification on DC AS URL for downloading Avatar ID List |
CR revision of S2-2503178 |
Samsung | 23.228 19.2.0 CR#16191 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
not treated | [WTS] [JSN] |
| S2-2505265 | KI#3: Updates on interworking with MTSI UE procedures |
CR revision of S2-2503169 revised to S2-2505459 |
Samsung | 23.228 19.2.0 CR#16002 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] |
| S2-2505266 | [DRAFT] Reply to LS on Automatic Resumption in IMS data channel |
LS out LS To: GSMA TSG IMSDCAS revision of S2-2503170 revised to S2-2505452 |
Samsung | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] | |
| S2-2505452 | [DRAFT] Reply to LS on Automatic Resumption in IMS data channel |
LS out LS To: GSMA TSG IMSDCAS revision of S2-2505266 revised to S2-2505695 |
Samsung | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] | |
| S2-2505453 | Clarification on MF Profile |
CR revision of S2-2505181 revised to S2-2505697 |
ZTE, Qualcomm Incorporated, Nokia | 23.228 19.2.0 CR#16501 catB | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] |
| S2-2505454 | Aligning MF selection criteria with 23.228 |
CR revision of S2-2504639 revised to S2-2505696 |
Nokia, ZTE, Qualcom | 23.502 19.3.0 CR#54142 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] |
| S2-2505455 | [DRAFT] Reply LS on Advanced MF capability registration and discovery |
LS out LS To: SA WG4 revision of S2-2505182 revised to S2-2505698 |
ZTE | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] | |
| S2-2505456 | KI#3: Update to DC interworking with MTSI UE |
CR revision of S2-2504772 revised to S2-2505699 |
Ericsson | 23.228 19.2.0 CR#15394 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] |
| S2-2505457 | Update on support of DC interworking |
CR revision of S2-2505034 revised to S2-2505700 |
vivo | 23.228 19.2.0 CR#14656 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] |
| S2-2505458 | Updates on procedure and service of DC interworking via DC AS |
CR revision of S2-2505203 revised to S2-2505701 |
China Mobile, Huawei, Hisilicon | 23.228 19.2.0 CR#15514 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] |
| S2-2505459 | KI#3: Updates on interworking with MTSI UE procedures |
CR revision of S2-2505265 |
Samsung | 23.228 19.2.0 CR#16003 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
withdrawn | [WTS] [JSN] |
| S2-2505460 | Modification on general description for standalone IMS DC session |
CR revision of S2-2505035 revised to S2-2505702 |
Vivo | 23.228 19.2.0 CR#15464 catD | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] |
| S2-2505461 | Correction on standalone data channel description |
CR revision of S2-2505083 revised to S2-2505703 |
Huawei, HiSilicon | 23.228 19.2.0 CR#16272 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] |
| S2-2505462 | Clarification on Standalone DC Procedure |
CR revision of S2-2505178 revised to S2-2505704 |
ZTE, Samsung | 23.228 19.2.0 CR#16481 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] |
| S2-2505463 | Clarification on PSI configuration on UE |
CR revision of S2-2505204 revised to S2-2505705 |
China Mobile, Huawei, Hisilicon | 23.228 19.2.0 CR#16372 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] |
| S2-2505464 | KI#1: Corrections to IMS Subscribe/Notify Framework Architecture |
CR revision of S2-2505262 revised to S2-2505706 |
[Samsung], Ericsson, Nokia, ZTE, Huawei | 23.228 19.2.0 CR#16015 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] |
| S2-2505695 | [DRAFT] Reply to LS on Automatic Resumption in IMS data channel |
LS out LS To: GSMA TSG IMSDCAS revision of S2-2505452 revised to S2-2505953 |
Samsung | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] | |
| S2-2505696 | Aligning MF selection criteria with 23.228 |
CR revision of S2-2505454 |
Nokia, ZTE, Qualcomm | 23.502 19.3.0 CR#54143 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
agreed | [WTS] [JSN] |
| S2-2505697 | Clarification on MF Profile |
CR revision of S2-2505453 revised to S2-2505954 |
ZTE, Qualcomm Incorporated, Nokia | 23.228 19.2.0 CR#16502 catB | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] |
| S2-2505698 | [DRAFT] Reply LS on Advanced MF capability registration and discovery |
LS out LS To: SA WG4 revision of S2-2505455 revised to S2-2505955 |
ZTE | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] | |
| S2-2505699 | KI#3: Update to DC interworking with MTSI UE |
CR revision of S2-2505456 |
Ericsson | 23.228 19.2.0 CR#15395 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
agreed | [WTS] [JSN] |
| S2-2505700 | Update on support of DC interworking |
CR revision of S2-2505457 |
Vivo | 23.228 19.2.0 CR#14657 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
agreed | [WTS] [JSN] |
| S2-2505701 | Updates on procedure and service of DC interworking via DC AS |
CR revision of S2-2505458 revised to S2-2505956 |
China Mobile, Huawei, Hisilicon, Nokia, Ericsson | 23.228 19.2.0 CR#15515 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] |
| S2-2505702 | Modification on general description for standalone IMS DC session |
CR revision of S2-2505460 revised to S2-2505957 |
Vivo | 23.228 19.2.0 CR#15465 catD | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] |
| S2-2505703 | Correction on standalone data channel description |
CR revision of S2-2505461 revised to S2-2505958 |
Huawei, HiSilicon | 23.228 19.2.0 CR#16273 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] |
| S2-2505704 | Clarification on Standalone DC Procedure |
CR revision of S2-2505462 revised to S2-2505959 |
ZTE, Samsung | 23.228 19.2.0 CR#16482 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] |
| S2-2505705 | Clarification on PSI configuration on UE |
CR revision of S2-2505463 revised to S2-2505960 |
China Mobile, Huawei, Hisilicon | 23.228 19.2.0 CR#16373 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] |
| S2-2505706 | KI#1: Corrections to IMS Subscribe/Notify Framework Architecture |
CR revision of S2-2505464 revised to S2-2505952 |
[Samsung], Ericsson, Nokia, ZTE, Huawei | 23.228 19.2.0 CR#16016 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
revised | [WTS] [JSN] |
| S2-2505952 | KI#1: Corrections to IMS Subscribe/Notify Framework Architecture |
CR revision of S2-2505706 |
Samsung, Ericsson, Nokia, ZTE, Huawei | 23.228 19.2.0 CR#16017 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
agreed | [WTS] [JSN] |
| S2-2505953 | Reply to LS on Automatic Resumption in IMS data channel |
LS out LS is reply to S2-2504581 LS To: GSMA TSG IMSDCAS, SA WG4, CT WG1 revision of S2-2505695 |
SA WG2 | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
approved | [WTS] [JSN] | |
| S2-2505954 | Clarification on MF Profile |
CR revision of S2-2505697 |
ZTE, Qualcomm Incorporated, Nokia | 23.228 19.2.0 CR#16503 catB | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
agreed | [WTS] [JSN] |
| S2-2505955 | Reply LS on Advanced MF capability registration and discovery |
LS out LS is reply to S2-2504634 LS To: SA WG4 revision of S2-2505698 |
SA WG2 | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
approved | [WTS] [JSN] | |
| S2-2505956 | Updates on procedure and service of DC interworking via DC AS |
CR revision of S2-2505701 |
China Mobile, Huawei, Hisilicon, Nokia, Ericsson | 23.228 19.2.0 CR#15516 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
agreed | [WTS] [JSN] |
| S2-2505957 | Modification on general description for standalone IMS DC session |
CR revision of S2-2505702 |
Vivo | 23.228 19.2.0 CR#15466 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
agreed | [WTS] [JSN] |
| S2-2505958 | Correction on standalone data channel description |
CR revision of S2-2505703 |
Huawei, HiSilicon | 23.228 19.2.0 CR#16274 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
agreed | [WTS] [JSN] |
| S2-2505959 | Clarification on Standalone DC Procedure |
CR revision of S2-2505704 |
ZTE, Samsung | 23.228 19.2.0 CR#16483 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
agreed | [WTS] [JSN] |
| S2-2505960 | Clarification on PSI configuration on UE |
CR revision of S2-2505705 |
China Mobile, Huawei, Hisilicon | 23.228 19.2.0 CR#16374 catF | NG_RTC_Ph2 | Rel-19 |
S2-169 AI: 19.2.2 |
agreed | [WTS] [JSN] |
76 documents (0.30205488204956 seconds)