ability to generate GSMTAP traces from osmo-e1d
In a typical setup, where icE1usb + osmo-e1d are used to connect some PBX or other PRI capable equipment, it would be nice if osmo-e1d could be used to generate signaling protocol traces.This would work as follows:
- some VTY command to create a GSMTAP source
- some VTY command to create software HLDC decoder instances (always in pairs for Rx+Tx) on specific timeslots of specific lines
GSMTAP source and software HDLC are available in libosmocore, they just need to be hooked up accordingly
- Priority changed from Normal to Low
note that this is not required for the hub setup where we use osmo-e1d with dahdi-trunkdev and can hence use osmo-isdntap to create protocol traces. It's more for the common situation on the client side, where there is no DAHDI involved and hence no DAHDI_RXMIRROR/DAHDI_TXMIRROR
Another approach might also be to add the RXMIRROR/TXMIRROR capability to osmo-e1d / libosmo-e1d and then support that from osmo-isdntap.