US5568487A
Expired / Lapsed
US
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Process for automatic conversion for porting telecommunications applications from the TCP/IP network to the OSI-CO network, and module used in this process
Assignee: Bull SAS
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Filing: 1994-11-28
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Granted: 1996-10-22
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Expires: 2014-11-28
Abstract
Abstract The invention relates to an address conversion process for porting a telecommunications application APP from the TCP/IP network to the OSI/CO network, and to an address conversion module used in this process. In a known manner, access to the networks is authorized by way of a "socket" interface (SOC) for the TCP/IP network, and an "XTI" interface for the OSI/CO network. In a notable manner, the "socket" interface calls (SC), like a plurality of system cells (SY), are in a first time period oriented, at the moment of the link editing phase prior to obtaining the executable, to a module (W) for automatic address conversion of the library type. This module (W) then performs the conversion of the addresses specific to the TCP/IP network into addresses of the OSI/CO network and enables the passage from the TCP/IP protocol to the OSI/CO protocol. After conversion, the calls are transmitted to the "XTI" interface and can be used directly in the OSI/CO network. Only the calls intended for the TCP/IP network are processed; all other calls (NT) are returned to the system.
Inventors
- 👤 Gerard Sitbon
- 👤 Jean-Francois Bassier
- 👤 Bernard Katrantzis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:22
CPC Classifications
H; H04; H04L; H04L9/00; H04L9/40
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
156 words
A process of address conversion for porting telecommunications applications from a TCP/IP network to an OSI-CO network, access to these networks being authorized by way of a socket interface for the TCP/IP network, and an XTI interface for the OSI-CO network, said process comprising: trapping socket interface calls, and a plurality of system calls of a read, write, close type, in a first time period, at a moment of a link editing phase prior to obtaining an executable, in an automatic address conversion module of a library type; converting, by said conversion module, addresses pertaining to the TCP/IP network into addresses of the OSI-CO network so as to enable passage from a TCP/IP protocol to an OSI-CO protocol; transmitting the system calls to the XTI interface after conversion to be directly used in the OSI-CO network, wherein only the calls intended for the TCP/IP network are processed, and all other calls are returned to the networks.
Claim 2
Dependent Claim
156 words
A process of address conversion for porting telecommunications applications from a TCP/IP network to an OSI-CO network, access to these networks being authorized by way of a socket interface for the TCP/IP network, and an XTI interface for the OSI-CO network, said process comprising: trapping socket interface calls, and a plurality of system calls of a read, write, close type, in a first time period, at a moment of a link editing phase prior to obtaining an executable, in an automatic address conversion module of a library type; converting, by said conversion module, addresses pertaining to the TCP/IP network into addresses of the OSI-CO network so as to enable passage from a TCP/IP protocol to an OSI-CO protocol; transmitting the system calls to the XTI interface after conversion to be directly used in the OSI-CO network, wherein only the calls intended for the TCP/IP network are processed, and all other calls are returned to the networks.
Claim 3
Dependent Claim
59 words
The address conversion process of claim 1, wherein when the call of the socket interface is for the TCP/IP network, a specific resource is first created in a memory in order to preserve a trace of a connection, and the XTI interface is called for opening said connection, said connection being managed by means of a binary searching tree.
Claim 4
Dependent Claim
98 words
An address conversion module used in a process of address conversion for porting telecommunications applications from a TCP/IP network to an OSI-CO network wherein said module comprises: a first submodule forming a main library and containing a mapping table between TCP/IP communication functions and conversion functions included in an input interface of a wrapper; a second service Submodule for converting IP and OSI addresses; a third submodule for recording connection information and managing said connection information by means of a binary searching tree; and a fourth service submodule for processing a specific set of extensions to the networks.
Claim 5
Dependent Claim
98 words
An address conversion module used in a process of address conversion for porting telecommunications applications from a TCP/IP network to an OSI-CO network wherein said module comprises: a first submodule forming a main library and containing a mapping table between TCP/IP communication functions and conversion functions included in an input interface of a wrapper; a second service Submodule for converting IP and OSI addresses; a third submodule for recording connection information and managing said connection information by means of a binary searching tree; and a fourth service submodule for processing a specific set of extensions to the networks.
Claim 6
Dependent Claim
70 words
The address conversion module of claim 3, wherein the mapping table included in the first submodule furnishes a bijective correspondence, wherein, for any TCP/IP communication function authorized by a socket interface, there is one and only one function in the interface that executes the service demanded by the applications; and names of calls, a number of parameter arguments of a call, semantics, and chaining together of calls are preserved exactly.
Claim 7
Dependent Claim
76 words
The address conversion module of claim 4, wherein the second service submodule for converting addresses also forms a library and performs the conversion between addresses including the network address of a given machine and a port relating to a service accessed, and OSI addresses including a network service access point and a transport selector, said conversion being capable of being done in both directions, either IP addresses to OSI addresses, or OSI addresses to IP addresses.
Claim 8
Dependent Claim
45 words
The address conversion module of claim 5, wherein the third submodule for recording connection information managed by the binary searching tree provides an independent service comprising a library enabling optimal recording, sorting, searching and deletion of all significant information elements relating to a given connection.
Claim 9
Dependent Claim
51 words
The address conversion modeule of claim 6, wherein the fourth service submodule enables processing of a specific set of extensions to the networks for returning calls that are not intended for the TCP/IP network and accordingly are not converted by the conversion module, to a standard library in the socket interface.
References Cited (Backward Citations)
US5021949A
Cited
US5224098A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-10-22 | 2000-04-22 | 2000-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-10-22 | 2004-04-22 | 2004-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-10-22 | 2008-04-22 | 2008-10-22 | $7700.00 | Window Closed / Lapsed |