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dexter gerrit-no-reply at lists.osmocom.orgdexter has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-bsc/+/26367 ) Change subject: bts-examples: add example for E1 connected BTS ...................................................................... bts-examples: add example for E1 connected BTS The manual lacks an example on how to set up an E1 connected BTS. Especially the relation between trunk number and E1 line number is not obvious. Change-Id: I02f5d4fe059e5cc9c3ffc2e3636d812532c09239 Related: OS#5308 --- M doc/manuals/chapters/bts-examples.adoc 1 file changed, 113 insertions(+), 0 deletions(-) git pull ssh://gerrit.osmocom.org:29418/osmo-bsc refs/changes/67/26367/1 diff --git a/doc/manuals/chapters/bts-examples.adoc b/doc/manuals/chapters/bts-examples.adoc index 58cb3ab..ba4c846 100644 --- a/doc/manuals/chapters/bts-examples.adoc +++ b/doc/manuals/chapters/bts-examples.adoc @@ -174,3 +174,116 @@ For building a multi-TRX setup, you also need to connect the TIB cables between the two nanoBTS units, as well as the coaxial/RF AUX cabling. ==== + +=== Example configuration for OsmoBSC with E1 BTS + +The following configuration sample illustrates the usage of BTSs that are +connected via an E1/T1 backhaul. + +.OsmoBSC configured for single-TRX E1 Ericsson DUG20 +==== +---- +network + network country code 901 + mobile network code 70 + neci 0 + paging any use tch 0 + handover 0 + handover window rxlev averaging 10 + handover window rxqual averaging 1 + handover window rxlev neighbor averaging 10 + handover power budget interval 6 + handover power budget hysteresis 3 + handover maximum distance 9999 + timer t3101 10 + timer t3105 40 + timer t3109 4 + timer t3113 60 + bts 0 + type rbs2000 + band GSM900 + om2000 version-limit oml gen 12 rev 10 + cell_identity 0 + location_area_code 1 + training_sequence_code 7 + base_station_id_code 63 + ms max power 15 + cell reselection hysteresis 4 + rxlev access min 0 + channel allocator descending + rach tx integer 9 + rach max transmission 7 + oml e1 line 0 timeslot 1 sub-slot full + oml e1 tei 62 + neighbor-list mode automatic + gprs mode none + is-connection-list add 4 512 12 + is-connection-list add 16 524 12 + is-connection-list add 28 536 12 + is-connection-list add 40 548 12 + trx 0 + rf_locked 0 + arfcn 123 + nominal power 42 + max_power_red 12 + rsl e1 line 0 timeslot 1 sub-slot full + rsl e1 tei 0 + timeslot 0 + phys_chan_config CCCH+SDCCH4 + hopping enabled 0 + e1 line 0 timeslot 1 sub-slot full + timeslot 1 + phys_chan_config TCH/F + hopping enabled 0 + e1 line 0 timeslot 2 sub-slot 1 + timeslot 2 + phys_chan_config TCH/F + hopping enabled 0 + e1 line 0 timeslot 2 sub-slot 2 + timeslot 3 + phys_chan_config TCH/F + hopping enabled 0 + e1 line 0 timeslot 2 sub-slot 3 + timeslot 4 + phys_chan_config TCH/F + hopping enabled 0 + e1 line 0 timeslot 3 sub-slot 0 + timeslot 5 + phys_chan_config TCH/F + hopping enabled 0 + e1 line 0 timeslot 3 sub-slot 1 + timeslot 6 + phys_chan_config TCH/F + hopping enabled 0 + e1 line 0 timeslot 3 sub-slot 2 + timeslot 7 + phys_chan_config TCH/F + hopping enabled 0 + e1 line 0 timeslot 3 sub-slot 3 +e1_input + e1_line 0 driver dahdi + e1_line 0 port 3 +---- +==== + +===== E1 Line number and MGCP trunk number +The switching of the voice channels is done via OsmoMGW, which acts as a media +converter between E1 and VoIP (RTP). OsmoBSC will use the E1 line number to +address the trunk via MGCP. + +When configuring OsmoMGW, one needs to make sure that the trunk number that is +set up on OsmoMGW, matches the line number that is set up on OsmoBSC. When those +numbers mismatch the trunk cannot be addressed correctly. + +Given there is no other switching in between, the E1 line number that is set up +on OsmoMGW must match the E1 line number that is set up on OsmoBSC. + +.OsmoMGW trunk configuration that matches the OsmoBSC configuration above +==== +---- + trunk 0 + rtp keep-alive once + no rtp keep-alive + line 0 +---- +==== \ No newline at end of file -- To view, visit https://gerrit.osmocom.org/c/osmo-bsc/+/26367 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: osmo-bsc Gerrit-Branch: master Gerrit-Change-Id: I02f5d4fe059e5cc9c3ffc2e3636d812532c09239 Gerrit-Change-Number: 26367 Gerrit-PatchSet: 1 Gerrit-Owner: dexter <pmaier at sysmocom.de> Gerrit-MessageType: newchange -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/gerrit-log/attachments/20211125/58b93bdd/attachment.htm>