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Transaction Language 1
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== History == TL1 was developed by [[Bellcore]] in 1984 as a standard man-machine language to manage [[network element]]s for the [[Regional Bell Operating Companies]] (RBOCs). It is based on Z.300 series man machine language standards. TL1 was designed as a standard protocol readable by machines as well as humans to replace the diverse [[ASCII]] based protocols used by different Network Element (NE) vendors. It is extensible to incorporate vendor specific commands. Telcordia OSSs such as NMA (Network Monitoring and Analysis) used TL1 as the element management ([[Element management system|EMS]]) protocol. This drove network element vendors to implement TL1 in their devices.
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