Product Introduction
The GTMU is the main control and transmission board for the GSM network. The GTMU has three types: GTMU, GTMUb, and GTMUc. The GTMUc is available as of SRAN9.0.
Functions
The GTMU performs the following functions:
• Controls and manages the entire base station in terms of configuration, equipment, performance, security, and radio resources.
• Processes signaling messages.
• Provides a reference clock, an alarm input port, CPRI ports, transmission ports, and an OM channel to the LMT, SMT, or U2000.
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