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RACH - Random Access Channel

The channel used for initial access into a system. The RACH function is different depending on the technology of the system. The term RACH applies to cdmaOne, GSM, UMTS, TETRA, CDMA2000 LTE and other telecommunication systems.


  • Fully interactive 3GPP based network map
  • Narrated call flows
  • Detailed network procedures

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