../code/conceptPage.scroll id transaction-language-1 name Transaction Language 1 appeared 1984 tags pl wikipedia https://en.wikipedia.org/wiki/Transaction_Language_1 related ascii summary Transaction Language 1 (TL1) is a widely used management protocol in telecommunications. It is a cross-vendor, cross-technology man-machine language, and is widely used to manage optical (SONET) and broadband access infrastructure in North America. TL1 is used in the input and output messages that pass between Operations Support Systems (OSSs) and Network Elements (NEs). Operations domains such as surveillance, memory administration, and access and testing define and use TL1 messages to accomplish specific functions between the OS and the NE. TL1 is defined in Telcordia Technologies (formerly Bellcore) Generic Requirements document GR-831-CORE. created 2004 backlinksCount 9 pageId 842122 revisionCount 71 dailyPageViews 28 appeared 1984