Number | Date | Country | Kind |
---|---|---|---|
4034354 | Oct 1990 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
4542503 | Fladerer et al. | Sep 1985 | |
4949339 | Shimada et al. | Aug 1990 | |
5150364 | Negus | Sep 1992 |
Number | Date | Country |
---|---|---|
5071990 | Sep 1990 | AUX |
0386828 | Feb 1990 | EPX |
3907050 | Sep 1990 | DEX |
61-29226 | Feb 1986 | JPX |
Entry |
---|
CCITT Recommendations G.707, G.708 and G.709. |