Number | Date | Country | Kind |
---|---|---|---|
56-213405 | Dec 1981 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4268722 | Little et al. | May 1981 | |
4354264 | Wurst | Oct 1982 | |
4430733 | Hardy et al. | Feb 1984 | |
4437182 | Lambert et al. | Mar 1984 | |
4437183 | Profet | Mar 1984 |
Number | Date | Country |
---|---|---|
0005220 | Nov 1979 | EPX |
Entry |
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International Switching Symposium, S. Kutsukake et al., "A Digital Switching System for Central Office", Montreal, Sep. 21-25, 1981. |
Review of Electrical Communication Laboratories, Kaneko et al., "Signalling Equipment for Digital Switching System", vol. 27, No. 9/10, Sep./Oct., 1979. |
Post Office Electrical Engineers Journal, Potter, "Monarch 120-A New Digital PABX", vol. 73, Apr. 1980. |