Number | Date | Country | Kind |
---|---|---|---|
3923172 | Jul 1989 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3982077 | Clark et al. | Sep 1976 |
Entry |
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"Synchronous Digital Hierarchy Bit Rates" CCITT, (not dated) pp. 76-174. |
"Considerations About G709 Multiplexing Structure" Jun., 1989, pp. 1-9, France Telecom. |