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VLR

Home Network. Serving Network. gateway. BS. MSC. VLR. HLR. MSC. MS. Home Network. Serving Network. gateway. BS. MSC. VLR. HLR. MSC. MS. IAM. Home Network. Serving Network. gateway. BS. MSC. VLR. HLR. MSC. MS. IAM. Send Routing Info. Home Network. Serving Network.

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VLR

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  1. Home Network Serving Network gateway BS MSC VLR HLR MSC MS

  2. Home Network Serving Network gateway BS MSC VLR HLR MSC MS IAM

  3. Home Network Serving Network gateway BS MSC VLR HLR MSC MS IAM Send Routing Info

  4. Home Network Serving Network gateway BS MSC VLR HLR MSC MS IAM Send Routing Info Provide Roaming #

  5. Home Network Serving Network gateway BS MSC VLR HLR MSC MS IAM Send Routing Info Provide Roaming # Send Subscriber Info

  6. Home Network Serving Network gateway BS MSC VLR HLR MSC MS IAM Send Routing Info Provide Roaming # Send Subscriber Info ACK

  7. Home Network Serving Network gateway BS MSC VLR HLR MSC MS IAM Send Routing Info Provide Roaming # Send Subscriber Info ACK Provide Roaming #Ack(MSRN)

  8. Home Network Serving Network gateway BS MSC VLR HLR MSC MS IAM Send Routing Info Provide Roaming # Send Subscriber Info ACK Provide Roaming #Ack(MSRN) Ack

  9. Home Network Serving Network gateway BS MSC VLR HLR MSC MS IAM Send Routing Info Provide Roaming # Send Subscriber Info ACK Provide Roaming #Ack(MSRN) Ack SS7 Call Setup

  10. Home Network Serving Network gateway BS MSC VLR HLR MSC MS IAM Send Routing Info Provide Roaming # Send Subscriber Info ACK Provide Roaming #Ack(MSRN) Ack SS7 Call Setup Paging Request

  11. Home Network Serving Network gateway BS MSC VLR HLR MSC MS IAM Send Routing Info Provide Roaming # Send Subscriber Info ACK Provide Roaming #Ack(MSRN) Ack SS7 Call Setup Paging Request Page

  12. Home Network Serving Network gateway BS MSC VLR HLR MSC MS IAM Send Routing Info Provide Roaming # Send Subscriber Info ACK Provide Roaming #Ack(MSRN) Ack SS7 Call Setup Paging Request Page Page rsp

  13. Home Network Serving Network gateway BS MSC VLR HLR MSC MS IAM Send Routing Info Provide Roaming # Send Subscriber Info ACK Provide Roaming #Ack(MSRN) Ack SS7 Call Setup Paging Request Page Page rsp Page rsp

  14. Home Network Serving Network gateway BS MSC VLR HLR MSC MS IAM Send Routing Info Provide Roaming # Send Subscriber Info ACK Provide Roaming #Ack(MSRN) Ack SS7 Call Setup Paging Request Page Page rsp Page rsp ASSIGNMENT

  15. Home Network Serving Network gateway BS MSC VLR HLR MSC MS IAM Send Routing Info Provide Roaming # Send Subscriber Info ACK Provide Roaming #Ack(MSRN) Ack SS7 Call Setup Paging Request Page Page rsp Page rsp Channel Assignment ASSIGNMENT

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