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公开(公告)号：JP2000101716A
公开(公告)日：2000-04-07
申请号：JP19536699
申请日：1999-07-09
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DAVIS WILLIAM ROBERT , KUO JASON T , LARSON RONALD FRANK , SAWYER ALBERT JOSEPH , SHELHAMER KENNETH WAYNE , STOA LARRY PHILLIP , THOMPSON ROBIN JEFFREY
Abstract: PROBLEM TO BE SOLVED: To make it possible to obtain a protocol compatible with an existing protocol by maintaining encoding for existing parameters in the protocol and providing a system which increases the number of parameter identification that can be encoded by parameters of a message packet. SOLUTION: A telephone system 100 has a first exchange system 101 and a second exchange system 111. The exchange system 101 provides telephone services to two telephone terminals 131 and 132 through lines 141 and 142, and the exchange system 111 provides telephone services to telephone terminals 133 to 135 through lines 143 to 145. According to this system, a device which communicates by using an old version of protocol can receiver a message including a parameter which has an expanded encoding field. The device performs reading processing of the parameter which has encoding that indicates a command by the old protocol.
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公开(公告)号：DE69900228T2
公开(公告)日：2002-04-25
申请号：DE69900228
申请日：1999-07-06
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DAVIS WILLIAM ROBERT , KUO JASON T , LARSON RONALD FRANK , SAWYER ALBERT JOSEPH , SHELHAMER KENNETH WAYNE , STOA LARRY PHILLIP , THOMPSON ROBIN JEFFREY
Abstract: A system for expanding a parameter encoding field in a new communications protocol that is compatible with an old protocol. An unused command parameter in an old protocol is used to indicate an expanded parameter encoding field in a new protocol. Parameter encodings from the old protocol are unchanged in the new protocol. A system communicating using the old protocol recognizes all parameters from the old protocol and ignores parameters from the new protocol. A system communicating using the new protocol recognizes parameters from both the old and new protocols.
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公开(公告)号：DE69900228D1
公开(公告)日：2001-09-27
申请号：DE69900228
申请日：1999-07-06
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DAVIS WILLIAM ROBERT , KUO JASON T , LARSON RONALD FRANK , SAWYER ALBERT JOSEPH , SHELHAMER KENNETH WAYNE , STOA LARRY PHILLIP , THOMPSON ROBIN JEFFREY
Abstract: A system for expanding a parameter encoding field in a new communications protocol that is compatible with an old protocol. An unused command parameter in an old protocol is used to indicate an expanded parameter encoding field in a new protocol. Parameter encodings from the old protocol are unchanged in the new protocol. A system communicating using the old protocol recognizes all parameters from the old protocol and ignores parameters from the new protocol. A system communicating using the new protocol recognizes parameters from both the old and new protocols.
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