Osmocom E1/T1 span recorder
https://osmocom.org/projects/osmo-e1-recorder
Harald Welte
13351138e2
The SIGN mode implies that LAPD instances are bound to the timeslots, which is of course not what we want in a pure capturing/recording scenario. Instead, use the new E1INP_TS_TYPE_HDLC mode, which allows us to capture any HDLC framed messages on E1/T1 timeslots, whether LAPD or e.g. MTP. |
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README
Osmocom E1 recorder =================== (C) 2016 by Harald Welte <laforge@gnumonks.org> The idea of this program is to be able to passively record E1/T1 based communications for purposes of data analysis. Recording of a single E1 link always requires two E1 interface cards, one for each direction. Recording can be performed either * passively, using a E1 Tap aapter * asa proxy / man-in-the-middle All timeslots will be opened in "raw" mode, making sure the recording will work wheter or not there is HLDC-based signalling (MTP or LAPD), PCM voice, TRAU frames or anything else on the line. Recording will be done on a per-timeslot basis, dumping the raw bytes read for this timeslot into a file. New files are started regularly, after reaching a pre-determined file size limit. File names contain RTC time stamping and timeslot number. Later possible extensions could include automatic detection of the payload and a more intelligent storage format (e.g. in case of HDLC bsaed signalling).