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1757015780035, "url" : "https://jenkins.osmocom.org/jenkins/view/Jenkins-Gerrit/job/gerrit-osmo-bts-build/1010/", "builtOn" : "", "changeSet" : { "_class" : "hudson.plugins.git.GitChangeSetList", "items" : [ { "_class" : "hudson.plugins.git.GitChangeSet", "affectedPaths" : [ "include/osmo-bts/lchan.h", "src/common/l1sap.c" ], "commitId" : "5c8c03ff7622f9a669331e13684f49e3a6aa4f0d", "timestamp" : 1756943908000, "author" : { "absoluteUrl" : "https://jenkins.osmocom.org/jenkins/user/falcon", "fullName" : "falcon" }, "authorEmail" : "falcon@freecalypso.org", "comment" : "FR/HR/EFR: implement SID filter in TCH UL path\u000a\u000aAs a result of how FR/HR/EFR DTX interacts with block diagonal\u000ainterleaving, at the beginning and end of each DTX pause a\u000acorrectly functioning TCH receiver will always pick up an\u000aartifact consisting of 4 received bursts (2 for TCH/HS)\u000aand same number of omitted bursts. Standard channel decoding\u000aof this Rx artifact will produce a \"half-block\" in which half\u000aof the bits prior to convolutional decoding will come from\u000aa SID repetition whose Tx was notionally suppressed, while\u000athe other half will be garbage. As a result of convolutional\u000adecoding, the result will often appear as valid SID per\u000aclassification rules - but passing it as such to the Rx DTX\u000ahandler is wrong. Classic E1 BTS and GSM MS implementations\u000ainclude a kind of SID filter at this point, setting BFI on\u000athese received half-blocks, so that the Rx DTX handler will\u000asee an invalid SID condition. Invalid SID means that comfort\u000anoise generation is to be continued, but no updated CN\u000aparameters are available - which is the truth in half-block\u000aRx situations. Implement the same filter.\u000a\u000aAdditional background info can be found here:\u000a\u000ahttps://osmocom.org/projects/retro-gsm/wiki/DTXu_half-blocks\u000a\u000aChange-Id: I46c62312316b04567bcadf6050597673f071247d\u000a", "date" : "2025-09-03 23:58:28 +0000", "id" : "5c8c03ff7622f9a669331e13684f49e3a6aa4f0d", "msg" : "FR/HR/EFR: implement SID filter in TCH UL path", "paths" : [ { "editType" : "edit", "file" : "include/osmo-bts/lchan.h" }, { "editType" : "edit", "file" : "src/common/l1sap.c" } ] } ], "kind" : "git" }, "culprits" : [ { "absoluteUrl" : "https://jenkins.osmocom.org/jenkins/user/falcon", "fullName" : "falcon" } ], "runs" : [ { "number" : 1010, "url" : "https://jenkins.osmocom.org/jenkins/view/Jenkins-Gerrit/job/gerrit-osmo-bts-build/BTS_MODEL=lc15,FIRMWARE_VERSION=litecell15,WITH_MANUALS=0,a4=default,label=osmocom-gerrit/1010/" }, { "number" : 1010, "url" : "https://jenkins.osmocom.org/jenkins/view/Jenkins-Gerrit/job/gerrit-osmo-bts-build/BTS_MODEL=lc15,FIRMWARE_VERSION=master,WITH_MANUALS=0,a4=default,label=osmocom-gerrit/1010/" }, { "number" : 1010, "url" : "https://jenkins.osmocom.org/jenkins/view/Jenkins-Gerrit/job/gerrit-osmo-bts-build/BTS_MODEL=lc15,FIRMWARE_VERSION=v2017.01,WITH_MANUALS=0,a4=default,label=osmocom-gerrit/1010/" }, { "number" : 1010, "url" : "https://jenkins.osmocom.org/jenkins/view/Jenkins-Gerrit/job/gerrit-osmo-bts-build/BTS_MODEL=oc2g,FIRMWARE_VERSION=master,WITH_MANUALS=0,a4=default,label=osmocom-gerrit/1010/" }, { "number" : 1010, "url" : "https://jenkins.osmocom.org/jenkins/view/Jenkins-Gerrit/job/gerrit-osmo-bts-build/BTS_MODEL=oc2g,FIRMWARE_VERSION=oc2g,WITH_MANUALS=0,a4=default,label=osmocom-gerrit/1010/" }, { "number" : 1010, "url" : "https://jenkins.osmocom.org/jenkins/view/Jenkins-Gerrit/job/gerrit-osmo-bts-build/BTS_MODEL=oc2g,FIRMWARE_VERSION=oc2g-next,WITH_MANUALS=0,a4=default,label=osmocom-gerrit/1010/" }, { "number" : 1010, "url" : "https://jenkins.osmocom.org/jenkins/view/Jenkins-Gerrit/job/gerrit-osmo-bts-build/BTS_MODEL=oct,FIRMWARE_VERSION=master,WITH_MANUALS=0,a4=default,label=osmocom-gerrit/1010/" }, { "number" : 1010, "url" : "https://jenkins.osmocom.org/jenkins/view/Jenkins-Gerrit/job/gerrit-osmo-bts-build/BTS_MODEL=oct+trx,FIRMWARE_VERSION=master,WITH_MANUALS=0,a4=default,label=osmocom-gerrit/1010/" }, { "number" : 1010, "url" : "https://jenkins.osmocom.org/jenkins/view/Jenkins-Gerrit/job/gerrit-osmo-bts-build/BTS_MODEL=sysmo,FIRMWARE_VERSION=femtobts_v2.7,WITH_MANUALS=1,a4=default,label=osmocom-gerrit/1010/" }, { "number" : 1010, "url" : "https://jenkins.osmocom.org/jenkins/view/Jenkins-Gerrit/job/gerrit-osmo-bts-build/BTS_MODEL=sysmo,FIRMWARE_VERSION=master,WITH_MANUALS=0,a4=default,label=osmocom-gerrit/1010/" }, { "number" : 1010, "url" : "https://jenkins.osmocom.org/jenkins/view/Jenkins-Gerrit/job/gerrit-osmo-bts-build/BTS_MODEL=sysmo,FIRMWARE_VERSION=superfemto_v2.4,WITH_MANUALS=0,a4=default,label=osmocom-gerrit/1010/" }, { "number" : 1010, "url" : "https://jenkins.osmocom.org/jenkins/view/Jenkins-Gerrit/job/gerrit-osmo-bts-build/BTS_MODEL=sysmo,FIRMWARE_VERSION=superfemto_v3.0.1pre,WITH_MANUALS=0,a4=default,label=osmocom-gerrit/1010/" }, { "number" : 1010, "url" : "https://jenkins.osmocom.org/jenkins/view/Jenkins-Gerrit/job/gerrit-osmo-bts-build/BTS_MODEL=sysmo,FIRMWARE_VERSION=superfemto_v3.1,WITH_MANUALS=0,a4=default,label=osmocom-gerrit/1010/" }, { "number" : 1010, "url" : "https://jenkins.osmocom.org/jenkins/view/Jenkins-Gerrit/job/gerrit-osmo-bts-build/BTS_MODEL=sysmo,FIRMWARE_VERSION=superfemto_v5.1,WITH_MANUALS=0,a4=default,label=osmocom-gerrit/1010/" }, { "number" : 1010, "url" : "https://jenkins.osmocom.org/jenkins/view/Jenkins-Gerrit/job/gerrit-osmo-bts-build/BTS_MODEL=trx,FIRMWARE_VERSION=master,WITH_MANUALS=0,a4=default,label=osmocom-gerrit/1010/" }, { "number" : 1010, "url" : "https://jenkins.osmocom.org/jenkins/view/Jenkins-Gerrit/job/gerrit-osmo-bts-build/BTS_MODEL=trx,FIRMWARE_VERSION=master,WITH_MANUALS=0,a4=default,label=raspbian/1010/" } ] }