BS11 » History » Version 2
laforge, 02/19/2016 10:47 PM
add note about what a BTS is
| 1 | 1 | laforge | The Siemens BS-11 is a relatively small [wiki:GSM] [wiki:BTS], sometimes known as Siemens microBTS. |
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| 3 | 2 | laforge | Please note: '''The BS-11 is not a GSM Base Station'''. It is a '''GSM Base ''Transceiver'' Station''' and only one element out of the |
| 4 | quite complex GSM network. The station itself can only send and receive data on the GSM frequencies. You need to emulate at least |
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| 5 | the BSC, MSC and HLR/VLR to be able to use GSM phones with the BS-11. [wiki:OpenBSC] is a project trying to implement the minimal neccessary parts as Free Software |
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| 7 | BS-11 was originally developed and manufactured by OTE in Firenze, Italy. The entire product was then later sold to Siemens SBS. |
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| 8 | 1 | laforge | |
| 9 | The BS-11 is available in a variety of configurations. Variations include |
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| 11 | * power supply |
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| 12 | * AC power supply 110/220V |
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| 13 | * 48V DC power supply |
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| 14 | * number of [wiki:TRX] |
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| 15 | * one TRX |
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| 16 | * two TRX |
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| 17 | * each of the TRX can be located in different bands |
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| 18 | * GSM900 |
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| 19 | * GSM1800 |
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| 21 | The uplink of the BS-11, much like most BTS, is a E1 / PCM30 interface, with the [Abis] protocol on top. |
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| 23 | Original Documentation to the BS-11 is only available under NDA. |
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| 25 | External links: |
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| 26 | * [http://laforge.gnumonks.org/photoalbum/devices/bs11-disassembly] photographs of disassembled BS-11 |
