# Recommendation I.251.5 (11/1988): Number identification supplementary services: Connected Line Identification Presentation (COLP)

> superseded recommendation/international standard from the International Telecommunication Union

**Wikidata**: [Q26985377](https://www.wikidata.org/wiki/Q26985377)  
**Source**: https://4ort.xyz/entity/recommendation-i-251-5-11-1988-number-identification-supplementary-services-connected-line-identification-presentation-colp-