Producing routing messages for voice over ip communications EP 2084868 A4 ABSTRACT A process and apparatus to facilitate communication between callers and callees in a system comprising a plurality of nodes with which callers and callees are associated is disclosed. In response to initiation of a call by a calling subscriber, a caller identifier and a callee identifier are received. Call classification criteria associated with the caller identifier are used to classify the call as a public network call or a private network call. A routing message identifying an address, on the private network, associated with the callee is produced when the call is classified as a private network call and a routing message identifying a gateway to the public network is produced when the call is classified as a public network call. https://www.google.com/patents/EP2084868A4?cl=en&dq=Digifonica&hl=en&sa=X&ei=ulGCVMXeNMT-Ur7XgegP&ved=0CB0Q6AEwAA
Mobile gateway WO 2010012090 A3 ABSTRACT A method of initiating a call to a callee using a mobile telephone involves: receiving, from a user of the mobile telephone, a callee identifier associated with the callee; transmitting an access code request message to an access server, said access code request message including said callee identifier; receiving an access code reply message from the access server in response to said access code request message, said access code reply message including an access code different from said callee identifier and associated with said callee identifier; and initiating a call with the mobile telephone using said access code to identify the callee. https://www.google.com/patents/WO2010012090A3?cl=en&dq=Digifonica&hl=en&sa=X&ei=ulGCVMXeNMT-Ur7XgegP&ved=0CCsQ6AEwAg
Stealth interception of calls within a VoIP network US 20040165709 A1 ABSTRACT Stealth interception of calls within a VoIP Network (91) for providing law enforcement related call interception capability (60,61,62). The VoIP network comprises of basically a SoftSwitch (20) that offers IP based telephony services for subscribers (10, 11) over a packet network. Packet Interceptors (51) are deployed in a packet network to non-intrusively monitor the signaling (21) and media packets (22), which comprise a call in a VoIP Network. The Call Monitoring Engine (50) on receipt of an intercept request from the Law Enforcement Agency (40); notifies the packet interceptors to monitor for packets and the Voice Packet Receiver and Assembler (52) for reception of voice packets. On detection of relevant packets the interceptors inform the Call Monitoring Engine of signaling packets and the Voice Packet Receiver and Assembler of voice packets. This packet information is processed and transmitted (41,42) to the Law Enforcement Agency. https://www.google.com/patents/US20040165709?dq=Digifonica&hl=en&sa=X&ei=ulGCVMXeNMT-Ur7XgegP&ved=0CDkQ6AEwBA
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