umerous appendixes and annexes contained in this recommendation that are very helpful to understanding a wide-scale deployment of the technology. Only the main ones are listed here, but it is strongly suggested that you download the document and familiarize yourself with them if you are deploying this profile. G.8275.2 is also a very active recommendations at the ITU-T, receiving numerous contributions from delegates, and SO it is also updated rather regularly. There was a revision in March 2020 that includes several amendments and an amendment consented at the October 2020 plenary. Link to recommendation: https://handle.itu.int/11.1002/1000/14544 8.4.1 Other Documents There are a couple of other documents that you might find interesting. These are not recommenda- tions, but rather are a source of extra information that may be helpful. GSTR-GNSS Considerations on the Use of GNSS as a Primary Time Refer- ence in Telecommunications ITU-T GSTR-GNSS is a very useful technical report that explains much of the technology under- pinning the use of GNSS receivers as a time source. It provides pertinent information on designing and operating telecom GNSS-based clocks for those applications where highly accurate time recov- ery is critical. From the scope of the document: This technical report is addressed to telecom operators, manufacturers, silicon vendors, and test equipment vendors who are interested in a high-level view of the information and issues associated with GNSS reception. This includes general information; basic variables, para- meters, and equations; modes of operation; and the nature of the challenges and the method- ology to mitigate them. This document does not aim to collect or summarize the large amount of material continu- ally published on the topic of GNSS reception, which includes scientific publications, doc- toral theses, experimental test reports, and articles in online encyclopedias. This report includes the following main topics and appendixes: High-level description of GNSS systems Factors inf