Company Confidential 1 © 2006 Nokia IMS emergency reqs.ppt / 4-Jul-2006 / Hannu Hietalahti IMS emergency call requirements Presentation for 3GPP – IETF joint workshop on SIP emergency calls 4 th of July 2006 / Hannu Hietalahti

3GPP – IETF emergency call workshop 2 © 2006 Nokia IMS emergency reqs.ppt /4-Jul-2006 / Hannu Hietalahti Topics 3GPP specifications General requirements Identification of emergency calls Interaction with cellular protocols Location of emergency calls

3GPP – IETF emergency call workshop 3 © 2006 Nokia IMS emergency reqs.ppt /4-Jul-2006 / Hannu Hietalahti 3GPP specifications IMS emergency is a Rel-7 work item Foreseen freezing early 2007 Service requirements are specified in 3GPP TS This presentation is an overview of IMS emergency call requirements in The service requirements TS is already frozen (i.e. the functionality is there)...but corrections are still possible Architecture is specified in 3GPP TS The TS is under version control, but new features are still possible Protocol details are in 3GPP TS Work in progress

3GPP – IETF emergency call workshop 4 © 2006 Nokia IMS emergency reqs.ppt /4-Jul-2006 / Hannu Hietalahti General requirements Protocol support for emergency services is needed At least speech services are required, multimedia is FFS (in later releases) Routing to the appropriate service point according to national regulations Emergency call without dialing a number must be possible triggering e.g. by red “emergency” button or car airbag sensor Terminal supporting voice services shall also support emergency speech calls terminal must support emergency calls without SIM / USIM support of emergency calls without SIM / USIM in the network is subject to national regulations Push-to-talk is not considered a voice service in this respect

3GPP – IETF emergency call workshop 5 © 2006 Nokia IMS emergency reqs.ppt /4-Jul-2006 / Hannu Hietalahti Identification of emergency calls The terminal detects emergency number or “IMS emergency call identifier” global default numbers 112, 911 (even in terminal without SIM / USIM) global IMS emergency call identifier (even in terminal without SIM / USIM) HPLMN can define additional e-numbers (but no IMS identifiers) on SIM / USIM Serving network can download local e-numbers (but no IMS identifiers) Currently only 3GPP cellular protocols (CS + PS domain) support this requirement Emergency call without dialing a number must be possible triggering e.g. by red “emergency” button or car airbag sensor Different emergency services need to be identified Police, ambulance, fire brigade, marine guard, mountain rescue Use of the subcategories is subject to national administration The network must be able to to detect emergency call, but no specific requirements have been made on how this should happen

3GPP – IETF emergency call workshop 6 © 2006 Nokia IMS emergency reqs.ppt /4-Jul-2006 / Hannu Hietalahti Interaction with the cellular protocols CS + PS (IMS) capable mobile should give priority to CS emergency call Local numbers downloaded by the serving network and HPLMN configured emergency numbers do apply also to IMS emergency call initiation Emergency categories (police, ambulance, etc) do apply also in IMS No means to configure local or HPLMN IMS emergency call identifiers is needed

3GPP – IETF emergency call workshop 7 © 2006 Nokia IMS emergency reqs.ppt /4-Jul-2006 / Hannu Hietalahti Location of emergency calls Location of emergency calls must be supported, applicability is subject to national regulations Locating emergency calls overrides subscribers privacy request Based on local regulation, the network controls this privacy override, as long as the PSAP and the emergency service authorities need it