Presentation on theme: "Called Party in Roaming"— Presentation transcript:
1 Called Party in Roaming Roaming Principles ChargingCalled Party in RoamingHLRHLRSCP(iii) PRN, resp(MSRN)(ii) PRN(i) SRI(iv) SRI, resp(MSRN)CAU-BGMSCMSC/VLR0 CSP MSRN*MSC/VLRLDOAB is inroamingBMSRN*=Mobile StationRoaming Numberno formato nacionalCalling Party PaysCalled Party Pays
2 Called Party with Call Forwarding Service Roaming Principles Charging with Call ForwardingCalled Party with Call Forwarding ServiceHLRHLRSCP(iii) PRN, resp(MSRN)(ii) PRN(i) SRI(iv) SRI, resp(MSRN)CAU-BGMSCMSC/VLR0 CSP MSRN*MSC/VLRLDOAB is inroamingB0 CSP CAU-CCFNRc / CFNRy0 CSP CAU-CCFUCalled Party PaysCalled Party PaysCalling Party PaysCalled Party Pays
3 Charging of Call Forwarding ANATEL Regulation 245, art. 77° A chamada dirigida a Usuário Visitante será tratada como composta por duas chamadas para efeito de faturamento.§ 3º Aplica-se ao disposto neste artigo às chamadas reencaminhadas para outro Código de Acesso a pedido do Usuário, sendo que nesta hipótese a segunda chamada tem origem na Área de Registro do Usuário e destino no Código de Acesso para o qual foi reencaminhada a chamada.GSM PostpaidOptimal Routing at Late Call Forwarding optional featureTDMA PostpaidAlready SupportedPrePaid (GSM and TDMA)The collect call restrictions for terminating calls in SMP prepaid subscribers are also applied.
4 Call Forwarding, National Roaming - 1 of 3 Terminated call reaches the GMSC, CFU active Campinas (019)Rio do Janeiro (021)HLRSub XRegistered: RJCFU:(ii) SRI, resp(CFU)(i) SRIMSC/VLRLongdistancecarrierCoverage AreaGMSCPOTSVMSOffice:SignalingTraffic
5 Call Forwarding, National Roaming - 2 of 3 Standard way and “trombone”effect, CFNRC active Campinas (019)Rio do Janeiro (021)HLRSub XRegistered: RJCFNRC:(iii) PRN, resp(MSRN)(ii) PRNSub XCFNRC:(iv) SRI, resp(MSRN)(i) SRIMSC/VLRNo PageResponsePagingLongdistancecarrierCoverage AreaGMSCPOTSVMSOffice:SignalingTraffic
6 Call Forwarding, National Roaming - 3 of 3 Optimal Routing on Late Call Forwarding (OR on LCF) Campinas (019)Rio do Janeiro (021)HLRSignalingTrafficSub XRegistered: RJCFNRC: VMSPRN’Sub XEricssonProprietaryRCH Ack.’RCH’MSC/VLRNo PageResponse,Busy orNo AnswerLongdistancecarrierPagingCoverage AreaGMSCPOTSVMSOffice:
7 International Roaming Terminated call successful Brazil (55)Mexico (52)HLRSub XRegistered: Mexico(ii) PRN(iii) PRN, resp(MSRN)(i) SRI(iv) SRI, resp(MSRN)MSC/VLRInternationalLongdistancecarrierGMSCSignalingTraffic
8 Roaming and Call Forwarding Concerns – 1 of 3 OR on LCF depends on Ericsson nodes at both sidesThus not applicable when different Core vendors are involved:National Roaming (i.e. TA – Oi)International RoamingANATEL Regulation 316, art. 29 and paragraph 6o mentions explicitly that Voice Mail access shall not be considered as Call Forwarding. Possible solutions:TA pays the Long Distance International leg of the call to VMS (absolutely not suggested)Ericsson optional feature that blocks Call Forwarding services of the users roaming internationally.
9 National Roaming – GSM Charging ?! Roaming and Call Forwarding Concerns – 2 of 3National Roaming – GSM Charging ?!OPERATOR XOPERATOR YOverlappingCoverage
10 Use (Mobile Originating) Roaming and Call Forwarding Concerns – 3 of 3OSB – Operator Specific Barring Blocking outside HLRIn the GSM standard OSB is not sent outside HPLMNIn Brazil TIM and Oi sends OSB also to each others and therefore also to TA!Be aware of roaming subscribers and the use of OSBCategoryUse (Mobile Originating)OSB1Blocking of Long Distance CallsOSB2-OSB3OSB4(VPN ATS, by Claro)