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PSAP - Emergency Call
PSAP stands for Public-Safety Wnswering Point or Public-Safety Access Point. In our daily talks, it usually mean 'IMS based emergency call', i.e 'Emergency Call going through IMS network, not through CS call'. UE may be able to make a PSAP call while it is properly registered in a network operator or it may be able to the PSAP call even without USIM (implying without being registered in a network).
There are several factors and radio messages getting involved in PSAP support and I will explain about it using some examples that I have done with a network simulator. Even in live network, you would see different types of PSAP operations listed below. Some UE or some carrier would allow all of these cases, but for some UE or some carrier only some of these cases are allowed. So you need to understand the exact UE specification and Network Operators requirement first before you start testing.
In the following examples, I wouldn't put much of comments and explanation. Based on the assumption that you are familiar with overall SIP/IMS protocol, I think just highliting some important parts can be enough explanation.
Emergency Call with Normal Registration
In following sample sequence, I only listed the message/procedures which is directly related to PSAP call, meaning there are many additional steps/messages which does exists in the reall call but not listed here.
< System Information Block Type 1 >
BCCH-DL-SCH-Message message: c1 (0) c1: systemInformationBlockType1 (1) systemInformationBlockType1 cellAccessRelatedInfo plmn-IdentityList: 1 item Item 0 PLMN-IdentityInfo plmn-Identity mcc: 3 items Item 0 MCC-MNC-Digit: 0 Item 1 MCC-MNC-Digit: 0 Item 2 MCC-MNC-Digit: 1 mnc: 2 items Item 0 MCC-MNC-Digit: 0 Item 1 MCC-MNC-Digit: 1 cellReservedForOperatorUse: notReserved (1) trackingAreaCode: 0001 [bit length 16, 0000 0000 0000 0001 decimal value 1] cellIdentity: 00000000 cellBarred: notBarred (1) intraFreqReselection: notAllowed (1) .... ..0. csg-Indication: False cellSelectionInfo q-RxLevMin: -110dBm (-55) p-Max: 23dBm freqBandIndicator: 4 schedulingInfoList: 2 items Item 0 SchedulingInfo si-Periodicity: rf16 (1) sib-MappingInfo: 0 items Item 1 SchedulingInfo si-Periodicity: rf32 (2) sib-MappingInfo: 1 item Item 0 SIB-Type: sibType3 (0) si-WindowLength: ms20 (5) systemInfoValueTag: 0 nonCriticalExtension nonCriticalExtension ims-EmergencySupport-r9: true (0)
In this message Network notifies varies information about embergency call but the detailed UE behavior may vary depending on UE implementation. See the comments I put in the message.
DL-DCCH-Message message: c1 (0) c1: rrcConnectionReconfiguration (4) rrcConnectionReconfiguration rrc-TransactionIdentifier: 0 criticalExtensions: c1 (0) c1: rrcConnectionReconfiguration-r8 (0) rrcConnectionReconfiguration-r8 dedicatedInfoNASList: 1 item Item 0 DedicatedInfoNAS: 271166512903074202e0060000f110... Non-Access-Stratum (NAS)PDU ..... // when UE tries PSAP call, usually NW assigns this APN // appended with .sos (e.g, testnet.sos) Access Point Name Length: 8 APN: testnet PDN address ... Protocol Configuration Options ... EPS mobile identity - GUTI Element ID: 0x50 Length: 11 .... 0... = odd/even indic: 0 .... .110 = Type of identity: GUTI (6) Mobile Country Code (MCC): Unknown (1) Mobile Network Code (MNC): Unknown (01) MME Group ID: 32769 MME Code: 0 M-TMSI: 0x00000001 Location area identification Element ID: 0x13 Location Area Identification (LAI) - 001/01/1 Mobile Country Code (MCC): Unknown (1) Mobile Network Code (MNC): Unknown (01) Location Area Code (LAC): 0x0001 (1) Mobile identity - MS identity - TMSI/P-TMSI (0x0001) ... GPRS Timer - T3402 value ... GPRS Timer - T3423 value ... // this part may be optional. (this is just one example) // if this part is not specified, UE may allow // usual emergency number like 911. but I saw some UE // does not trigger emergency call at all if the // number is not specified here. // When I am testing emergency call, // I usually specifies the number // that is not used as emergency number in live network to // prevent the UE accidentally make emergency call to live // network. Emergency Number List Element ID: 0x34 Length: 4 Emergency Number Information: 1 Emergency Number Info length: 3 000. .... = Spare bit(s): 0 ...0 .... = Mountain Rescue: False .... 0... = Marine Guard: False .... .0.. = Fire Brigade: False .... ..0. = Ambulance: False .... ...1 = Police: True Emergency BCD Number: 123 EPS network feature support Element ID: 0x64 Length: 1 00.. .... = Spare bit(s): 0x00 ..0. .... = ESRPS:network does not support use of ...0 0... = CS-LCS:no information about support of .... .0.. = EPC-LCS: location services via EPC not .... ..1. = EMC BS: emergency bearer services in S1 mode supported .... ...1 = IMS VoPS: IMS voice over PS session in S1 mode supported radioResourceConfigDedicated ...
UL-DCCH-Message message: c1 (0) c1: ulInformationTransfer (9) ulInformationTransfer criticalExtensions: c1 (0) c1: ulInformationTransfer-r8 (0) ulInformationTransfer-r8 dedicatedInfoType: dedicatedInfoNAS (0) dedicatedInfoNAS: 273a3567040... Non-Access-Stratum (NAS)PDU 0010 .... = Security header type: ... .... 0111 = Protocol discriminator: ... Message authentication code: 0x3a356704 Sequence number: 6 0000 .... = EPS bearer identity: ... .... 0010 = Protocol discriminator: ... Procedure transaction identity: 24 NAS EPS session management messages: PDN connectivity request (0xd0) 0010 .... = PDN type: IPv6 (2) .... 0100 = Request type: emergency (4) Protocol Configuration Options Element ID: 0x27 Length: 13 [Link direction: MS to network (0)] 1... .... = Extension: True .... .000 = Configuration Protocol: PPP for use with IP PDP type or IP PDN type(0) Protocol or Container ID: DNS Server IPv6 Address Request (0x0003) Length: 0x00 (0) Protocol or Container ID: P-CSCF IPv6 Address Request (0x0001) Length: 0x00 (0) Protocol or Container ID: IP address allocation via NAS signalling(0x000a) Length: 0x00 (0) Protocol or Container ID: IPv4 Link MTU Request(0x0010) Length: 0x00 (0)
< Activate default EPS bearer context request >
DL-DCCH-Message message: c1 (0) c1: rrcConnectionReconfiguration (4) rrcConnectionReconfiguration rrc-TransactionIdentifier: 0 criticalExtensions: c1 (0) c1: rrcConnectionReconfiguration-r8 (0) rrcConnectionReconfiguration-r8 dedicatedInfoNASList: 1 item Item 0 DedicatedInfoNAS: 273a53d882067218c101090d08616... Non-Access-Stratum (NAS)PDU 0010 .... = Security header type: ... .... 0111 = Protocol discriminator: ... Message authentication code: 0x3a53d882 Sequence number: 6 0111 .... = EPS bearer identity: .. .... 0010 = Protocol discriminator: ... Procedure transaction identity: 24 NAS EPS session management messages: Activate default EPS bearer context request (0xc1) EPS quality of service Length: 1 Quality of Service Class Identifier (QCI): QCI 9 Access Point Name Length: 13 APN: testnet.sos PDN address Length: 9 0000 0... = Spare bit(s): 0x00 PDN type: IPv6 (2) PDN IPv6 if id: 0000000000000001 Protocol Configuration Options Element ID: 0x27 Length: 39 [Link direction: Network to MS (1)] 1... .... = Extension: True .... .000 = Configuration Protocol: ... Protocol or Container ID: DNS Server IPv6 Address Length: 0x10 (16) IPv6: 2001:0:0:3::2 Protocol or Container ID: P-CSCF IPv6 Address.. Length: 0x10 (16) IPv6: 2001:0:0:3::2 radioResourceConfigDedicated .....
INVITE urn:service:sos SIP/2.0 Supported: timer,100rel,precondition Allow: INVITE,ACK,OPTIONS,CANCEL,BYE,UPDATE,INFO,REFER,NOTIFY,MESSAGE,PRACK User-Agent: testIMS /OK2 5.1.1 Accept-Contact: *;+g.3gpp.icsi-ref="urn%3Aurn-7%3A3gpp-service.ims.icsi.mmtel";video P-Access-Network-Info: 3GPP-E-UTRAN-FDD;utran-cell-id-3gpp=0010100010000000 Session-Expires: 1800;refresher=uac Min-SE: 90 Content-Type: application/sdp Accept: application/sdp,application/3gpp-ims+xml Route: <sip:[2001:0:0:3::2]:5060;lr> P-Preferred-Identity: <sip:001010123456789@ims.mnc01.mcc001.3gppnetwork.org> From: <sip:001010123456789@ims.mnc01.mcc001.3gppnetwork.org>;tag=414344133 To: "123" <urn:service:sos> Call-ID: 1800855744@2001:0:0:3::1 CSeq: 1 INVITE Max-Forwards: 70 Contact: <sip:001010123456789@[2001:0:0:3::1]:5060;transport=UDP>; +g.3gpp.icsi-ref="urn%3Aurn-7%3A3gpp-service.ims.icsi.mmtel";video; +g.3gpp.mid-call;+g.3gpp.srvcc-alerting;+g.3gpp.ps2cs-srvcc-orig-pre-alerting; +sip.instance="<urn:gsma:imei:35609506-513511-0>" Via: SIP/2.0/TCP [2001:0:0:3::1]:5060;branch=z9hG4bK2071720670smg;transport=TCP;rport Content-Length: 780
v=0 o=SAMSUNG-IMS-UE 1234567 0 IN IP6 2001:0:0:3::1 s=SS VOIP c=IN IP6 2001:0:0:3::1 b=AS:49 b=RS:0 b=RR:0 t=0 0 m=audio 1234 RTP/AVP 114 113 102 115 105 101 b=AS:49 b=RS:0 b=RR:0 a=rtpmap:114 AMR-WB/16000/1 a=fmtp:114 mode-change-capability=2;max-red=0 a=rtpmap:113 AMR-WB/16000/1 a=fmtp:113 octet-align=1;mode-change-capability=2;max-red=0 a=rtpmap:102 AMR/8000/1 a=fmtp:102 mode-change-capability=2;max-red=0 a=rtpmap:115 AMR/8000/1 a=fmtp:115 octet-align=1;mode-change-capability=2;max-red=0 a=rtpmap:105 telephone-event/16000 a=fmtp:105 0-15 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-15 a=curr:qos local none a=curr:qos remote none a=des:qos mandatory local sendrecv a=des:qos optional remote sendrecv a=sendrecv a=ptime:20 a=maxptime:240
Call-ID: 1800855744@2001:0:0:3::1 CSeq: 1 INVITE Record-Route: <sip:[2001:0:0:3::2]:5060;lr> Require: precondition Require: 100rel Supported: precondition Supported: 100rel RSeq: 1 User-Agent: Test-PSAP/fcefab8 Allow: INVITE, ACK, CANCEL, BYE, PRACK, UPDATE P-Asserted-Identity: <tel:123;phone-context=test-cscf.com> Content-Type: application/sdp Content-Length: 804 Contact: <sip:[2001:0:0:3::2]:50101;transport=tcp>;+g.3gpp.icsi-ref="urn:urn-7:3gpp-service.ims.icsi.mmtel";video Privacy: none
v=0 o=test 301 60302 IN IP6 2001:0:0:3::2 s=- i=A VOIP Session c=IN IP6 2001:0:0:3::2 t=0 0 m=audio 60000 RTP/AVP 114 113 102 115 105 101 b=AS:49 b=RS:0 b=RR:0 a=rtpmap:114 AMR-WB/16000/1 a=fmtp:114 mode-change-capability=2;max-red=0 a=rtpmap:113 AMR-WB/16000/1 a=fmtp:113 octet-align=1;mode-change-capability=2;max-red=0 a=rtpmap:102 AMR/8000/1 a=fmtp:102 mode-change-capability=2;max-red=0 a=rtpmap:115 AMR/8000/1 a=fmtp:115 octet-align=1;mode-change-capability=2;max-red=0 a=rtpmap:105 telephone-event/16000 a=fmtp:105 0-15 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-15 a=curr:qos local none a=curr:qos remote none a=des:qos mandatory local sendrecv a=des:qos mandatory remote sendrecv a=sendrecv a=ptime:20 a=maxptime:240 a=conf:qos remote sendrecv a=rtcp:60001
Emergency Call without Normal Registration (e.g, without USIM)
BCCH-DL-SCH-Message message: c1 (0) c1: systemInformationBlockType1 (1) systemInformationBlockType1 cellAccessRelatedInfo plmn-IdentityList: 1 item Item 0 PLMN-IdentityInfo plmn-Identity mcc: 3 items Item 0 MCC-MNC-Digit: 0 Item 1 MCC-MNC-Digit: 0 Item 2 MCC-MNC-Digit: 1 mnc: 2 items Item 0 MCC-MNC-Digit: 0 Item 1 MCC-MNC-Digit: 1 cellReservedForOperatorUse: notReserved (1) trackingAreaCode: 0001 [bit length 16, 0000 0000 0000 0001 decimal value 1] cellIdentity: 00000000 cellBarred: notBarred (1) intraFreqReselection: notAllowed (1) .... ..0. csg-Indication: False cellSelectionInfo q-RxLevMin: -110dBm (-55) p-Max: 23dBm freqBandIndicator: 4 schedulingInfoList: 2 items Item 0 SchedulingInfo si-Periodicity: rf16 (1) sib-MappingInfo: 0 items Item 1 SchedulingInfo si-Periodicity: rf32 (2) sib-MappingInfo: 1 item Item 0 SIB-Type: sibType3 (0) si-WindowLength: ms20 (5) systemInfoValueTag: 0 nonCriticalExtension nonCriticalExtension ims-EmergencySupport-r9: true (0)
< RRC : RRC Connection Request >
rrcConnectionRequest-r8 ue-Identity: randomValue (1) randomValue: c81bd69ba6 establishmentCause: emergency (0) spare: 00 [bit length 1, 7 LSB pad bits, 0... .... decimal value 0]
HEX : 5C 81 BD 69 BA 60
< RRC : RRC Connection Setup >
rrcConnectionSetup rrc-TransactionIdentifier: 0 criticalExtensions: c1 (0) c1: rrcConnectionSetup-r8 (0) rrcConnectionSetup-r8 radioResourceConfigDedicated srb-ToAddModList: 1 item Item 0 SRB-ToAddMod srb-Identity: 1 rlc-Config: defaultValue (1) defaultValue: NULL logicalChannelConfig: defaultValue (1) defaultValue: NULL mac-MainConfig: explicitValue (0) explicitValue ul-SCH-Config maxHARQ-Tx: n5 (4) periodicBSR-Timer: sf20 (3) retxBSR-Timer: sf320 (0) ..0. .... ttiBundling: False drx-Config: release (0) release: NULL timeAlignmentTimerDedicated: infinity (7) phr-Config: setup (1) setup periodicPHR-Timer: sf500 (5) prohibitPHR-Timer: sf200 (5) dl-PathlossChange: dB3 (1) physicalConfigDedicated pdsch-ConfigDedicated p-a: dB0 (4) pucch-ConfigDedicated ackNackRepetition: release (0) release: NULL pusch-ConfigDedicated betaOffset-ACK-Index: 10 betaOffset-RI-Index: 12 betaOffset-CQI-Index: 15 uplinkPowerControlDedicated p0-UE-PUSCH: 0dB deltaMCS-Enabled: en0 (0) ..1. .... accumulationEnabled: True p0-UE-PUCCH: 0dB pSRS-Offset: 0 filterCoefficient: fc4 (4) cqi-ReportConfig cqi-ReportModeAperiodic: rm30 (3) nomPDSCH-RS-EPRE-Offset: 0dB (0) antennaInfo: defaultValue (1) defaultValue: NULL schedulingRequestConfig: setup (1) setup sr-PUCCH-ResourceIndex: 20 sr-ConfigIndex: 30 dsr-TransMax: n64 (4)
HEX : 60 12 9B 3E 86 0F B5 79 70 AC FC 30 04 99 C0 A0 F4
< RRC : RRC Connection Setup Complete + NAS : Attach Request + ESM : PDN Connectivity Request >
rrcConnectionSetupComplete rrc-TransactionIdentifier: 0 criticalExtensions: c1 (0) c1: rrcConnectionSetupComplete-r8 (0) rrcConnectionSetupComplete-r8 selectedPLMN-Identity: 1 dedicatedInfoNAS: 074176089b09008432153007050000000019002c0201d034... Non-Access-Stratum (NAS)PDU .... EPS mobile identity Length: 8 .... 1... = odd/even indic: 1 .... .011 = Type of identity: IMEI (3) IMEI: 990004823510370 // Since there is no USIM, UE use IMEI for ID UE network capability ... ESM message container Length: 44 ESM message container contents: 0201d03427268080211001... .... Procedure transaction identity: 1 NAS EPS session management messages: PDN connectivity request (0xd0) 0011 .... = PDN type: IPv4v6 (3) .... 0100 = Request type: emergency (4) Protocol Configuration Options ... Protocol or Container ID: Internet Protocol Control Protocol Length: 0x10 (16) PPP IP Control Protocol Code: Configuration Request (1) Identifier: 0 (0x00) Length: 16 Options: (12 bytes), Primary DNS Server IP Address, Secondary DNS Server IP Address Primary DNS Server IP Address: 0.0.0.0 Type: Primary DNS Server IP Address (129) Length: 6 Primary DNS Address: 0.0.0.0 (0.0.0.0) Secondary DNS Server IP Address: 0.0.0.0 Type: Secondary DNS Server IP Address (131) Length: 6 Secondary DNS Address: 0.0.0.0 (0.0.0.0) Protocol or Container ID: DNS Server IPv4 Address Request (0x000d) Length: 0x00 (0) Protocol or Container ID: DNS Server IPv6 Address Request (0x0003) Length: 0x00 (0) Protocol or Container ID: P-CSCF IPv6 Address Request (0x0001) Length: 0x00 (0) Protocol or Container ID: P-CSCF IPv4 Address Request (0x000c) Length: 0x00 (0) Protocol or Container ID: IP address allocation via NAS signalling (0x000a) Length: 0x00 (0) Protocol or Container ID: IPv4 Link MTU Request (0x0010) Length: 0x00 (0) DRX Parameter ... MS Network Capability ....
Mobile station classmark 2 .... Mobile station classmark 3 .... Supported Codec List - Supported Codecs .... Voice domain preference and UE's usage setting Element ID: 0x5d Length: 1 0000 0... = Spare bit(s): 0 .... .0.. = UE's usage setting: Voice centric .... ..11 = Voice domain preference for E-UTRAN: IMS PS voice preferred, CS Voice as secondary (3) MS network feature support 1100 .... = Element ID: 0xc- .... 000. = Spare bit(s): 0 .... ...1 = Extended periodic timers: MS supports the extended periodic timer in this domain
HEX : 20 00 D0 0E 82 EC 11 36 12 01 08 64 2A 60 0E 0A 00 00 00 00 32 00 58 04 03 A0 68 4E 4D 01 00 42 20 02 00 00 21 02 0C 00 00 00 01 06 0C 00 00 00 00 00 1A 00 00 06 00 00 02 00 00 18 00 00 14 00 00 20 00 B8 14 00 62 07 CB C0 74 22 06 AE B1 4C 40 16 C0 28 08 5E CA 46 04 00 48 58 40 80 10 08 04 C0 00 00 04 3E 00 BA 02 07 82
< RRC : DL Information Transfer + NAS : Security Mode Command >
dlInformationTransfer-r8 dedicatedInfoType: dedicatedInfoNAS (0) dedicatedInfoNAS: 370000000000075d0000050000000070 Non-Access-Stratum (NAS)PDU 0011 .... = Security header type: Integrity protected with new EPS security context .... 0111 = Protocol discriminator: EPS mobility management messages (0x07) Message authentication code: 0x00000000 Sequence number: 0 0000 .... = Security header type: Plain NAS message, not security protected (0) .... 0111 = Protocol discriminator: EPS mobility management messages (0x07) NAS EPS Mobility Management Message Type: Security mode command (0x5d) NAS security algorithms - Selected NAS security algorithms 0... .... = Spare bit(s): 0x00 .000 .... = Type of ciphering algorithm: EPS encryption algorithm EEA0 (null ciphering algorithm) (0) .... 0... = Spare bit(s): 0x00 .... .000 = Type of integrity protection algorithm: EPS integrity algorithm EIA0 (null integrity protection algorithm) (0) 0000 .... = Spare half octet: 0 .... 0... = Type of security context flag (TSC): Native security context (for KSIasme) .... .000 = NAS key set identifier: (0) ASME UE security capability - Replayed UE security capabilities ....
HEX : 08 00 81 B8 00 00 00 00 00 3A E8 00 00 28 00 00 00 03 80
< RRC : UL Information Transfer + NAS : Security Mode Complete >
ulInformationTransfer-r8 dedicatedInfoType: dedicatedInfoNAS (0) dedicatedInfoNAS: 470000000000075e Non-Access-Stratum (NAS)PDU 0100 .... = Security header type: Integrity protected and ciphered with new EPS security context (4) .... 0111 = Protocol discriminator: EPS mobility management messages (0x07) Message authentication code: 0x00000000 Sequence number: 0 0000 .... = Security header type: Plain NAS message, not security protected (0) .... 0111 = Protocol discriminator: EPS mobility management messages (0x07) NAS EPS Mobility Management Message Type: Security mode complete (0x5e)
HEX : 48 01 08 E0 00 00 00 00 00 EB C0
< RRC : Security Mode Command >
securityModeCommand-r8 securityConfigSMC securityAlgorithmConfig cipheringAlgorithm: eea0 (0) integrityProtAlgorithm: eia0-v920 (0)
HEX : 30 00 00
< RRC : Security Mode Complete >
securityModeComplete rrc-TransactionIdentifier: 0 criticalExtensions: securityModeComplete-r8 (0) securityModeComplete-r8
HEX : 28 00
< RRC : UE Capability Enquiry >
ueCapabilityEnquiry rrc-TransactionIdentifier: 0 criticalExtensions: c1 (0) c1: ueCapabilityEnquiry-r8 (0) ueCapabilityEnquiry-r8 ue-CapabilityRequest: 1 item Item 0 RAT-Type: eutra (0)
HEX : 38 00 00
< RRC : UE Capability Information >
ueCapabilityInformation-r8 ue-CapabilityRAT-ContainerList: 1 item Item 0 UE-CapabilityRAT-Container rat-Type: eutra (0) ueCapabilityRAT-Container: c998... UE-EUTRA-Capability accessStratumRelease: rel10 (2) ue-Category: 4 pdcp-Parameters supportedROHC-Profiles .... phyLayerParameters .... rf-Parameters ... measParameters .... featureGroupIndicators: 7fcffeba ... interRAT-Parameters ... nonCriticalExtension phyLayerParameters-v920 interRAT-ParametersGERAN-v920 e-RedirectionGERAN-r9: supported (0) interRAT-ParametersUTRA-v920 e-RedirectionUTRA-r9: supported (0) csg-ProximityIndicationParameters-r9 utran-ProximityIndication-r9: supported (0) neighCellSI-AcquisitionParameters-r9 son-Parameters-r9 rach-Report-r9: supported (0) nonCriticalExtension lateNonCriticalExtension: 8c00000000 UE-EUTRA-Capability-v9a0-IEs featureGroupIndRel9Add-r9: c0000000 .... nonCriticalExtension featureGroupIndRel10-r10: 00040000 .... ue-BasedNetwPerfMeasParameters-r10 loggedMeasurementsIdle-r10: supported (0) nonCriticalExtension
HEX : 38 01 02 6C 99 80 01 0C 60 18 38 FF F0 71 FF DF F3 FF AE A2 06 00 90 E1 94 E9 52 44 8E 0B 18 00 00 00 00 15 00 04 00 00 80 00
rrcConnectionReconfiguration-r8 dedicatedInfoNASList: 1 item Item 0 DedicatedInfoNAS: 27000000000... Non-Access-Stratum (NAS)PDU 0010 .... = Security header type: Integrity protected and ciphered (2) .... 0111 = Protocol discriminator: EPS mobility management messages (0x07) Message authentication code: 0x00000000 Sequence number: 1 0000 .... = Security header type: Plain NAS message, not security protected (0) .... 0111 = Protocol discriminator: EPS mobility management messages (0x07) NAS EPS Mobility Management Message Type: Attach accept (0x42) 0000 .... = Spare half octet: 0 .... 0... = Spare bit(s): 0x00 .... .001 = Attach result: EPS only (1) GPRS Timer - T3412 value .... Tracking area identity list - TAI list Length: 6 0... .... = Spare bit(s): 0x00 .00. .... = Type of list: list of TACs belonging to one PLMN, with non-consecutive TAC values (0) ...0 0000 = Number of elements: 0 [+1 = 1 element(s)] Mobile Country Code (MCC): Unknown (1) Mobile Network Code (MNC): Unknown (010) Tracking area code(TAC): 0x0001 ESM message container Length: 107 ESM message container contents: ... 0101 .... = EPS bearer identity: EPS bearer identity value 5 (5) .... 0010 = Protocol discriminator: EPS session management messages (0x02) Procedure transaction identity: 1 NAS EPS session management messages: Activate default EPS bearer context request (0xc1) EPS quality of service Length: 1 Quality of Service Class Identifier (QCI): QCI 5 (5) Access Point Name Length: 13 APN: testnet.sos PDN address Length: 13 0000 0... = Spare bit(s): 0x00 PDN type: IPv4v6 (3) PDN IPv6 if id: 0000000000000001 PDN IPv4: 192.168.1.1 (192.168.1.1) Protocol Configuration Options Element ID: 0x27 Length: 72 [Link direction: Network to MS (1)] 1... .... = Extension: True Configuration Protocol: PPP for use with IP PDP type or IP PDN type (0) Protocol or Container ID: Internet Protocol Control Protocol (0x8021) Length: 0x10 (16) PPP IP Control Protocol Code: Configuration Nak (3) Identifier: 0 (0x00) Length: 16 Options: (12 bytes), Primary DNS Server IP Address, Secondary DNS Server IP Address Primary DNS Server IP Address: 192.168.1.2 Type: Primary DNS Server IP Address (129) Length: 6 Primary DNS Address: 192.168.1.2 (192.168.1.2) Secondary DNS Server IP Address: 192.168.1.2 Type: Secondary DNS Server IP Address (131) Length: 6 Secondary DNS Address: 192.168.1.2 (192.168.1.2) Protocol or Container ID: DNS Server IPv4 Address (0x000d) Length: 0x04 (4) IPv4: 192.168.1.2 Protocol or Container ID: DNS Server IPv6 Address (0x0003) Length: 0x10 (16) IPv6: 2001:0:0:1::2 Protocol or Container ID: P-CSCF IPv6 Address (0x0001) Length: 0x10 (16) IPv6: 2001:0:0:1::2 Protocol or Container ID: P-CSCF IPv4 Address (0x000c) Length: 0x04 (4) IPv4: 192.168.1.2 EPS mobile identity - GUTI Element ID: 0x50 Length: 11 .... 0... = odd/even indic: 0 .... .110 = Type of identity: GUTI (6) Mobile Country Code (MCC): Unknown (1) Mobile Network Code (MNC): Unknown (010) MME Group ID: 32769 MME Code: 0 M-TMSI: 0x00000001 GPRS Timer - T3402 value ... GPRS Timer - T3423 value .... EPS network feature support Element ID: 0x64 Length: 1 00.. .... = Spare bit(s): 0x00 ..0. .... = ESRPS: network does not support use of EXTENDED SERVICE REQUEST to request for packet services ...0 0... = CS-LCS: no information about support of location services via CS domain is available (0) .... .0.. = EPC-LCS: location services via EPC not supported .... ..1. = EMC BS: emergency bearer services in S1 mode supported .... ...1 = IMS VoPS: IMS voice over PS session in S1 mode supported radioResourceConfigDedicated srb-ToAddModList: 1 item ... drb-ToAddModList: 1 item ... mac-MainConfig: explicitValue (0) ... physicalConfigDedicated ...
HEX : 20 06 04 04 91 38 00 00 00 00 08 3A 10 0F 00 30 00 00 08 80 00 08 03 5A 90 0E 08 08 28 68 43 0B 73 93 4B A3 9B A9 88 1B 9B 7B 98 68 18 00 00 00 00 00 00 00 0E 05 40 08 09 3A 44 04 01 08 80 18 00 00 84 08 36 05 40 08 14 18 36 05 40 08 10 00 68 26 05 40 08 10 00 18 81 00 08 00 00 00 00 00 08 00 00 00 00 00 00 00 10 00 08 81 00 08 00 00 00 00 00 08 00 00 00 00 00 00 00 10 00 60 26 05 40 08 12 80 5F B0 00 08 84 00 08 00 00 00 00 08 BF 02 CF 03 20 08 1B 53 E0 FA 81 BC 0F A8 E0 60 68 26 7E 9D 52 D2 E8 00 FB 50 68 03 00 0C A0 7F E0 80 FD 02
rrcConnectionReconfigurationComplete rrc-TransactionIdentifier: 0 criticalExtensions: rrcConnectionReconfigurationComplete-r8 (0) rrcConnectionReconfigurationComplete-r8
HEX : 10 00
< RRC : DL Information Transfer + EMM : Information >
ulInformationTransfer-r8 dedicatedInfoType: dedicatedInfoNAS (0) dedicatedInfoNAS: 270000000001074300035200c2 Non-Access-Stratum (NAS)PDU 0010 .... = Security header type: Integrity protected and ciphered (2) .... 0111 = Protocol discriminator: EPS mobility management messages (0x07) Message authentication code: 0x00000000 Sequence number: 1 0000 .... = Security header type: Plain NAS message, not security protected (0) .... 0111 = Protocol discriminator: EPS mobility management messages (0x07) NAS EPS Mobility Management Message Type: Attach complete (0x43) ESM message container Length: 3 ESM message container contents: 5200c2 0101 .... = EPS bearer identity: EPS bearer identity value 5 (5) .... 0010 = Protocol discriminator: EPS session management messages (0x02) Procedure transaction identity: 0 NAS EPS session management messages: Activate default EPS bearer context accept (0xc2)
HEX : 48 01 A4 E0 00 00 00 00 20 E8 60 00 6A 40 18 40
INVITE urn:service:sos SIP/2.0 P-Preferred-Identity: sip:99000482-351037-0@[2001:0:0:1::1]:5060 Contact: <sip:[2001:0:0:1::1]:5060>;+sip.instance="<urn:gsma:imei:99000482-351037-0>" Supported: timer Allow: INVITE,ACK,OPTIONS,CANCEL,BYE,UPDATE,INFO,REFER,NOTIFY,MESSAGE,PRACK P-Access-Network-Info: 3GPP-E-UTRAN-FDD;utran-cell-id-3gpp=31148000010000000 Session-Expires: 300 Min-SE: 90 Content-Type: application/sdp Route: <sip:[2001:0:0:1::2]:5060;lr> Accept-Contact: *;+g.3gpp.icsi-ref="urn%3Aurn-7%3A3gpp-service.ims.icsi.mmtel" From: <sip:anonymous@anonymous.invalid>;tag=2043043914 To: <urn:service:sos> Call-ID: 227004879@2001:0:0:1::1 CSeq: 1 INVITE Max-Forwards: 70 Via: SIP/2.0/TCP [2001:0:0:1::1]:5060;branch=z9hG4bK1207526045smg;transport=TCP Content-Length: 579
v=0 o=TEST-IMS-UE 1234562 0 IN IP6 2001:0:0:1::1 s=SS VOIP i=A VOIP Session c=IN IP6 2001:0:0:1::1 t=0 0 m=audio 49158 RTP/AVP 104 110 102 108 105 100 b=AS:38 b=RS:0 b=RR:0 a=rtpmap:104 AMR-WB/16000 a=fmtp:104 octet-align=0;mode-set=2 a=rtpmap:110 AMR-WB/16000 a=fmtp:110 octet-align=1;mode-set=2 a=rtpmap:102 AMR/8000 a=fmtp:102 octet-align=0;mode-set=7 a=rtpmap:108 AMR/8000 a=fmtp:108 octet-align=1;mode-set=7 a=rtpmap:105 telephone-event/16000 a=fmtp:105 0-15 a=rtpmap:100 telephone-event/8000 a=fmtp:100 0-15 a=sendrecv a=ptime:20 a=maxptime:240
SIP/2.0 100 Trying Via: SIP/2.0/TCP [2001:0:0:1::1]:5060;branch=z9hG4bK1207526045smg;transport=TCP Max-Forwards: 70 From: <sip:anonymous@anonymous.invalid>;tag=2043043914 To: <urn:service:sos> Call-ID: 227004879@2001:0:0:1::1 CSeq: 1 INVITE Content-Length: 0
SIP/2.0 180 Ringing Max-Forwards: 70 Via: SIP/2.0/TCP [2001:0:0:1::1]:5060;branch=z9hG4bK1207526045smg;transport=TCP From: <sip:anonymous@anonymous.invalid>;tag=2043043914 To: <urn:service:sos>;tag=2147483647 Call-ID: 227004879@2001:0:0:1::1 CSeq: 1 INVITE Record-Route: <sip:[2001:0:0:1::2]:5060;lr> Supported: precondition Supported: 100rel User-Agent: Test-PSAP/aeeae6a Allow: INVITE, ACK, CANCEL, BYE, PRACK, UPDATE P-Asserted-Identity: <tel:911;phone-context=testnet.com> Content-Length: 0 Contact: <sip:[2001:0:0:1::2]:35738;transport=tcp> Privacy: none
SIP/2.0 200 OK Max-Forwards: 70 Via: SIP/2.0/TCP [2001:0:0:1::1]:5060;branch=z9hG4bK1207526045smg;transport=TCP From: <sip:anonymous@anonymous.invalid>;tag=2043043914 To: <urn:service:sos>;tag=2147483647 Call-ID: 227004879@2001:0:0:1::1 CSeq: 1 INVITE Record-Route: <sip:[2001:0:0:1::2]:5060;lr> User-Agent: Test-PSAP/aeeae6a Content-Type: application/sdp Allow: INVITE, ACK, CANCEL, BYE, PRACK, UPDATE P-Asserted-Identity: <tel:911;phone-context=testnet.com> Content-Length: 581 Contact: <sip:[2001:0:0:1::2]:35738;transport=tcp> Privacy: none
v=0 o=test 447 271448 IN IP6 2001:0:0:1::2 s=- i=A VOIP Session c=IN IP6 2001:0:0:1::2 t=0 0 m=audio 60000 RTP/AVP 104 110 102 108 105 100 b=AS:38 b=RS:0 b=RR:0 a=rtpmap:104 AMR-WB/16000 a=fmtp:104 octet-align=0;mode-set=2 a=rtpmap:110 AMR-WB/16000 a=fmtp:110 octet-align=1;mode-set=2 a=rtpmap:102 AMR/8000 a=fmtp:102 octet-align=0;mode-set=7 a=rtpmap:108 AMR/8000 a=fmtp:108 octet-align=1;mode-set=7 a=rtpmap:105 telephone-event/16000 a=fmtp:105 0-15 a=rtpmap:100 telephone-event/8000 a=fmtp:100 0-15 a=sendrecv a=ptime:20 a=maxptime:240 a=rtcp:60001
ACK sip:[2001:0:0:1::2]:35738;transport=tcp SIP/2.0 From: <sip:anonymous@anonymous.invalid>;tag=2043043914 To: <urn:service:sos>;tag=2147483647 CSeq: 1 ACK Call-ID: 227004879@2001:0:0:1::1 Max-Forwards: 70 Route: <sip:[2001:0:0:1::2]:5060;lr> Contact: <sip:+12244004245@[2001:0:0:1::1]:5060>;+g.3gpp.icsi-ref="urn%3Aurn-7%3A3gpp-service.ims.icsi.mmtel";video;+sip.instance="<urn:gsma:imei:99000482-351037-0>" Via: SIP/2.0/UDP [2001:0:0:1::1]:5060;branch=z9hG4bK2277799816smg;transport=UDP Content-Length: 0
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