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List of Timer numbers » History » Revision 1

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neels, 09/15/2020 03:57 PM


List of Timer numbers

Below is a list of timer numbers used in Osmocom programs.
Many are specified by 3GPP specifications, indicated by a T (like T3103).
There are also various Osmocom specific timers, indicated by an X (like X23).

Timers specified by 3GPP

Timer Program Purpose
T7 OsmoBSC inter-BSC/MSC Handover outgoing, BSSMAP HO Required to HO Command timeout
T8 OsmoBSC inter-BSC/MSC Handover outgoing, BSSMAP HO Command to final Clear timeout
T10 OsmoBSC RR Assignment
T101 OsmoBSC inter-BSC/MSC Handover incoming, BSSMAP HO Request to HO Accept
T3101 OsmoBSC RR Immediate Assignment
T3103 OsmoBSC Handover
T3105 OsmoBSC Physical Information
T3107 OsmoBSC (unused)
T3109 OsmoBSC RSL SACCH deactivation
T3111 OsmoBSC Wait time before RSL RF Channel Release
T3113 OsmoBSC Paging
T3115 OsmoBSC (unused)
T3117 OsmoBSC (unused)
T3119 OsmoBSC (unused)
T3122 OsmoBSC Wait time after RR Immediate Assignment Reject
T3141 OsmoBSC (unused)
T3212 OsmoBSC Periodic Location Update timer, sent to MS (1 = 6 minutes)

Timers specific to Osmocom

Timer Program Purpose
X1 OsmoBTS Time after which osmo-bts exits if regular ramp down during shut down process does not finish (s)
X2 OsmoBTS Time after which osmo-bts exits if requesting transceivers to stop during shut down process does not finish (s)
X1 OsmoBSC MGCP response timeout
X2 OsmoBSC RTP stream establishing timeout
X23002 OsmoBSC Wait time for RSL Channel Activate ACK after sending RSL Channel Activate
X23005 OsmoBSC Wait time for RSL IPA CRCX ACK after sending RSL IPA CRCX
X23006 OsmoBSC Wait time for RSL IPA MDCX ACK after sending RSL IPA MDCX

Legacy timer numbers: specific to Osmocom, but still defined as T timers

Legacy T timer corresponding X timer Software Purpose
T2427001 - libosmo-mgcp-client OsmoBSC OsmoMSC timeout for MGCP response from MGW
T993111 - OsmoBSC Wait time after lchan was released in error (should be T3111 + 2s)
T993210 - OsmoBSC After L3 Complete, wait for MSC to confirm
T999 - OsmoBSC After Clear Request, wait for MSC to Clear Command (sanity)
T992427 - OsmoBSC MGCP timeout (2427 is the default MGCP port number)
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Updated by neels over 3 years ago · 1 revisions

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