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| International Standard Category: Data communication networks |
YD 336-1988 Digital Line Signalling for Manual Toll Exchange to local Exchange
人工长途电话局至市话局局间中继数字型线路信号 ;
| Category No.: | 33.040.40 | Valid Status: | valid |
| Issued Organization: | MOPT | Issued Date: | 1988-1-13 |
| Implemented Date: | 1988-1-13 | Abolished Date: | |
| Superseded Standard.: | Superseded Date: |
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