Number | Date | Country | Kind |
---|---|---|---|
93 10679 | Sep 1993 | FRX | |
94 08154 | Jul 1994 | FRX |
Number | Name | Date | Kind |
---|---|---|---|
4617658 | Walters | Oct 1986 | |
4651319 | Bowlds | Mar 1987 | |
4756007 | Qureshi et al. | Jul 1988 | |
4760573 | Calvignac et al. | Jul 1988 | |
4764921 | Graves et al. | Aug 1988 | |
5046074 | Abiven et al. | Sep 1991 | |
5113391 | Gupta et al. | May 1992 |
Number | Date | Country |
---|---|---|
0222544A2 | May 1987 | EPX |
WO8606231 | Oct 1986 | WOX |
Entry |
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"Data Communication Over the Telephone Network", International Telegraph and Telephone Consultative Committee, Recommendations, v.110, pp. 1-8. |
Stallings, "Data and Computer Communications", 1988, pp. 149-152. |