An NTRIP sourcetable describes the data a caster provides and consists of three types of records:

* [[CAS]] - caster specification records
* [[NET]] - network specification records
* [[STR]] - stream specification records

Additional references:

* NTRIP version 1 information excerpt from BKG: [[http://igs.bkg.bund.de/root_ftp/NTRIP/documentation/NtripDocumentation.pdf|NtripDocumentation.pdf]]
* NTRIP standard is designed and published by RTCM: [[http://www.rtcm.org/|RTCM.org]]
* Standard documents can be bought: [[https://ssl29.pair.com/dmarkle/puborder.php?show=3|RTCM Online Publication Order Form]]