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This Recommendation was revised to consolidate all the characteristics of national networks into one Recommendation. Additionally, it tightened the requirement for noise induced by power lines and it now makes provision for the addition of Asynchronous Transfer Mode (ATM) technology to be integrated into the PSTN. This Recommendation provides guidance regarding the performance of national networks.
| Author | ITU |
|---|---|
| Editor | ITU |
| Document type | Standard |
| Format | File |
| ICS | 33.040.20 : Transmission systems
|
| Number of pages | 15 |
| Replace | ITU-T G.120 (1988-11) |
| Year | 1990 |
| Document history | ITU-T G.120 (1998-12) |
| Country | Switzerland |
| Keyword | CCITT G.120;ITU-T 120;120;ITU-T G.120 |