# Recommendation V.2 (11/1988): Power levels for data transmission over telephone lines

> recommendation/international standard from the International Telecommunication Union

**Wikidata**: [Q27051494](https://www.wikidata.org/wiki/Q27051494)  
**Source**: https://4ort.xyz/entity/recommendation-v-2-11-1988-power-levels-for-data-transmission-over-telephone-lines