Ericsson RBS » History » Version 2
laforge, 02/19/2016 10:47 PM
fix formatting
| 1 | 1 | laforge | [[PageOutline]] |
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| 2 | = Ericsson RBS 2000 = |
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| 3 | |||
| 4 | There is some initial/experimental code in OpenBSC to support the Ericsson RBS 2000 family of BTS. |
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| 5 | |||
| 6 | As opposed to Siemens/ip.access, Ericsson A-bis is much farther away from the specs, particularly |
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| 7 | since their Organization and Maintenance Layer (OML) is a proprietary protocol called OM2000. |
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| 8 | |||
| 9 | Nonetheless, we have been making quite a bit of progress in getting the RBS 2000 series supported. |
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| 10 | Right now it is still not complete. Don't expect anything to work at this stage. |
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| 11 | |||
| 12 | == Requirements == |
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| 13 | |||
| 14 | 2 | laforge | * Ericsson RBS 2000 series BTS |
| 15 | * E1 or T1 interface card, supported by the [wiki:DAHDI] driver. WE DO NOT SUPPORT RBS with mISDN drivers! |
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| 16 | * RBS with software + IDB in default configuration, especially OML TEI set to 62 |
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| 17 | * /etc/dahdi/system.conf with "dslot=1,4" in it |
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| 18 | 1 | laforge | |
| 19 | == Setup == |
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| 20 | |||
| 21 | 2 | laforge | * Check that dahdi_tool is showing the link as OK, otherwise you have some wiring/polarity issues |
| 22 | * Create an openbsc.cfg that lists your BTS as 'rbs2000' type (see attached example) |
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| 23 | * do not try to be clever and use non-standard E1 timeslot assignments, the code is hard-coded and assumes certain values |
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| 24 | * start [wiki:bsc_hack] as usual |
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| 25 | 1 | laforge | |
| 26 | == Status == |
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| 27 | |||
| 28 | So far, you should get |
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| 29 | * A-bis link initialization, i.e. BSC telling the BTS to use TS1 as signalling for IXU/DXU OML |
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| 30 | * OpenBSC configuring and starting the CF (central function) |
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| 31 | * You can manually connect, configure and enable the IS via the VTY |
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| 32 | * With some luck, the OML SAPI to the RRU/TRU's can then be established |
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| 33 | * Using the '-p foo.pcap' option, you can write a PCAP protocol trace to be used with wireshark and our OM2000 wireshark dissector |
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| 34 | |||
| 35 | What is NOT supported yet: |
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| 36 | * Actually initializing the transceivers and Um timeslots |
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| 37 | * Any actual communication with phones |
