# Service data unit

> data passed down to a lower layer of the OSI model, yet to be encapsulated

**Wikidata**: [Q1758093](https://www.wikidata.org/wiki/Q1758093)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Service_data_unit)  
**Source**: https://4ort.xyz/entity/service-data-unit


## References

1. Freebase Data Dumps. 2013