16 lines
440 B
Plaintext
16 lines
440 B
Plaintext
FOSS in the Mobile World
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The Siemens BS-11 microBTS
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Siemens BS-11 microBTS
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plain old 2G (GSM voice calls, CSD)
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one or two TRX, 30mW to 2W each, GSM900
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two E1 interfaces (for daisy-chaining)
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documentation under NDA, but
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99.9% of the A-bis protocol available from GSM specs
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See TS 04.08 (RLL), 12.21 (OML), 08.58 (RSL)
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RS232 serial port for Local Maintenance Terminal
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LMT software proprietary under NDA
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not needed for operation of the BTS
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