Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2003-05-12
2010-10-26
Eng, George (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S432200, C455S445000
Reexamination Certificate
active
07822416
ABSTRACT:
Techniques are provided to allow global roaming between different devices in different networks, using different protocols. A system may contain one or more protocol dependent logic servers (PDLSs), in which each PDLS is associated with a particular network
etwork protocol. The networks may comprise one or more wired telecommunications networks, wireless communications networks, or Internet-based networks. When a first PDLS receives an incoming, protocol-dependent message comprising a first protocol from a first network intended for a user currently registered on another network, the first PDLS converts the protocol-dependent message into an incoming, protocol-independent message and forwards it to another network element, such as a core logic server (CLS). The CLS processes the incoming, protocol-independent message, generates an appropriate outgoing protocol-independent message and forwards this message to a second PDLS. The second PDLS converts the outgoing, protocol-independent message to an appropriate outgoing, protocol-dependent message and forwards it to a second network operating using a second protocol. The conversion of incoming, protocol-independent messages into outgoing, protocol-independent messages eventually enables a link to be established between the two networks operating using different protocols.
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Alexiou Triantafyllos
Chen Kuo-Wei
Isukapalli Ramana
La Porta Thomas
Murakami Kazutaka
Alcatel-Lucent USA Inc.
Capitol Patent & Trademark Law Firm
Eng George
Miller Brandon J
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