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