Number | Name | Date | Kind |
---|---|---|---|
3916123 | Werner et al. | Oct 1975 | |
4022978 | Connell et al. | May 1977 | |
4334303 | Bertin et al. | Jun 1982 | |
4486739 | Franaszek et al. | Dec 1984 | |
4710976 | Wakabayashi et al. | Dec 1987 | |
4975916 | Miracle et al. | Dec 1990 | |
5042027 | Takase et al. | Aug 1991 | |
5107489 | Brown et al. | Apr 1992 | |
5406555 | Yoshida | Apr 1995 |
Number | Date | Country |
---|---|---|
63-136736 | Jun 1988 | JPX |
Entry |
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"Telephone Call Connection Monitor for a Telephone Billing System", IBM Technical Disclosure Bulletin, vol. 30, No. 4, Sep. 1987, pp. 1688-1691. |
Enterprise Systems Architecture/390, Escon I/O Interface IBM publication SA22-7202-02. |