| 摘要 |
Method for routing mobile phone signaling messages between different collaborating networks (20,30) including an STP (25,35) and at least two home networks (10,40) including an STP (16,36). A collaborating ITP (29,39) is connected to a collaborating STP (25,35), a home ITP (17,47) is connected to a home STP (16,46), and a central ITP (51) is connected to each ITP via a wide area network (6) which is not a PSTN. A visited country IMSI identifies a mobile subscriber as a subscriber to a collaborating network. A visited IMSI is associated with a home network in the central ITP. A signaling message, including the visited IMSI, is sent from a collaborating STP to the collaborating ITP, and is forwarded to the central ITP. The message is forwarded from the central ITP to a home ITP with which the visited IMSI is associated, and sent to the corresponding home STP. |
| 主权项 |
1. A method for routing mobile phone signaling messages between different mobile communication networks, which networks are interconnected by a Public Switched Telephone Network (PSTN) operated by one or several PSTN operators, via which PSTN telephone signaling can be performed during roaming using a telephony signaling protocol, where at least one collaborating network comprises a respective Signal Transfer Point (STP) and at least two home networks comprise a respective STP each, the method comprising the steps of:
a) connecting a respective collaborating internet Transfer Point (ITP) to the STP of each respective collaborating network, connecting a respective home ITP to the STP of each respective home network, providing a central ITP which is connected to each of the other ITP:s via the internet, and providing a server comprising a Home Location Registry (HLR) in connection to, but arranged externally to, one of said home networks; b) providing a visited country International Mobile Subscriber Identity (IMSI), identifying a mobile subscriber as a subscriber to a certain one of said collaborating networks; c) to the central ITP, providing an association between the visited country IMSI and one of the said home networks; d) causing the STP of the certain one collaborating network to send a first signaling message comprising the visited country IMSI, based upon this IMSI, to the respective collaborating ITP; e) causing the collaborating ITP to forward, via the internet, all signaling messages received from the STP of the certain one collaborating network, including the said first signaling message, to the central ITP; f) forwarding, via the internet, the first signaling message from the central ITP to the respective home ITP connected to the STP of the home network with which the visited country IMSI is associated and based upon the association provided in step c); g) sending the first signaling message from the said home ITP to the STP of the said home network; h) causing the STP of the said home network to forward the first message to the said HLR; i) sending a second signaling message, comprising the visited country IMSI, from the HLR to the STP of the home network to which the HLR is connected; j) sending the second signaling message from the STP of said home network to the home ITP; k) causing the said home ITP to forward, via the internet, all signaling messages received from the STP of the home network, including the said second signaling message, to the central ITP; l) forwarding, via the internet and based upon the visited country IMSI, the second signaling message from the central ITP to the respective collaborating ITP connected to the STP of the collaborating network to which the mobile subscriber is identified as a subscriber by the visited country IMSI; and m) sending the second signaling message from the said collaborating ITP to the STP connected to the said ITP. |
