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Called Party in Roaming B is in roaming GMSC MSC/VLR LDO B MSC/ VLR HLR SCP Calling Party Pays Called Party Pays MSRN*=Mobile Station Roaming Number no.

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Presentation on theme: "Called Party in Roaming B is in roaming GMSC MSC/VLR LDO B MSC/ VLR HLR SCP Calling Party Pays Called Party Pays MSRN*=Mobile Station Roaming Number no."— Presentation transcript:

1 Called Party in Roaming B is in roaming GMSC MSC/VLR LDO B MSC/ VLR HLR SCP Calling Party Pays Called Party Pays MSRN*=Mobile Station Roaming Number no formato nacional A HLR CAU-B0 CSP MSRN* Roaming Principles Charging (i) SRI (ii) PRN (iii) PRN, resp (MSRN) (iv) SRI, resp (MSRN)

2 Called Party with Call Forwarding Service B is in roaming GMSC MSC/VLR LDO B MSC/ VLR HLR SCP Calling Party Pays Called Party Pays A HLR CAU-B0 CSP MSRN* 0 CSP CAU-C CFU Called Party Pays 0 CSP CAU-C CFNRc / CFNRy Called Party Pays Roaming Principles Charging with Call Forwarding (i) SRI (ii) PRN (iii) PRN, resp (MSRN) (iv) SRI, resp (MSRN)

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 Postpaid –Optimal Routing at Late Call Forwarding optional feature TDMA Postpaid –Already Supported PrePaid (GSM and TDMA) –The collect call restrictions for terminating calls in SMP prepaid subscribers are also applied.

4 GMSC MSC/VLR Long distance carrier HLR Coverage Area Campinas (019)Rio do Janeiro (021) Sub X Registered: RJ CFU: VMS POTS Office: Signaling Traffic Call Forwarding, National Roaming - 1 of 3 Terminated call reaches the GMSC, CFU active (i) SRI (ii) SRI, resp (CFU)

5 GMSC Long distance carrier HLR Coverage Area Sub X Registered: RJ CFNRC: VMS POTS Office: Paging No Page Response Sub X CFNRC: Campinas (019)Rio do Janeiro (021) Signaling Traffic Call Forwarding, National Roaming - 2 of 3 Standard way and tromboneeffect, CFNRC active (i) SRI (ii) PRN (iii) PRN, resp (MSRN) (iv) SRI, resp (MSRN) MSC/VLR

6 GMSC Long distance carrier HLR Coverage Area Sub X Registered: RJ CFNRC: VMS VMS POTS Office: Paging No Page Response, Busy or No Answer Sub X Campinas (019)Rio do Janeiro (021) PRN Ericsson Proprietary RCH RCH Ack. Call Forwarding, National Roaming - 3 of 3 Optimal Routing on Late Call Forwarding (OR on LCF) Signaling Traffic MSC/VLR

7 GMSC MSC/VLR International Long distance carrier HLR Brazil (55)Mexico (52) Sub X Registered: Mexico Signaling Traffic International Roaming Terminated call successful (i) SRI (ii) PRN (iii) PRN, resp (MSRN) (iv) SRI, resp (MSRN)

8 Roaming and Call Forwarding Concerns – 1 of 3 OR on LCF depends on Ericsson nodes at both sides Thus not applicable when different Core vendors are involved: National Roaming (i.e. TA – Oi) International Roaming ANATEL Regulation 316, art. 29 and paragraph 6 o 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 ?! OPERATOR X OPERATOR Y Overlapping Coverage Roaming and Call Forwarding Concerns – 2 of 3

10 OSB – Operator Specific Barring Blocking outside HLR CategoryUse (Mobile Originating) OSB1Blocking of Long Distance Calls OSB2- OSB3- OSB4(VPN ATS, by Claro) In the GSM standard OSB is not sent outside HPLMN In Brazil TIM and Oi sends OSB also to each others and therefore also to TA! Be aware of roaming subscribers and the use of OSB Roaming and Call Forwarding Concerns – 3 of 3


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