> For the complete documentation index, see [llms.txt](https://gsm.learn-telecom.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://gsm.learn-telecom.com/system-information-messages/system-information-6-si6.md).

# System information-6 (SI6)

Information on LAI, cell options, Cell identity and PLMN permitted or not is transmitted on this SI.

![](https://1516040574-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fg081KOVSE5kjkOj8LvCP%2Fuploads%2Fz9PHiHuVDt6n02IFSDz1%2Fimage.png?alt=media\&token=05b93f11-b3b6-4ec2-ae23-6c0cc51733d3)