Osmocom Libraries » libosmocore

When running a Gb interface based on the frame_relay.c code, I get log messages like

<0024> frame_relay.c:729 DLCI 18 is not active (yet), discarding
<0024> frame_relay.c:729 DLCI 19 is not active (yet), discarding
<0024> frame_relay.c:729 DLCI 16 is not active (yet), discarding
<0024> frame_relay.c:729 DLCI 17 is not active (yet), discarding

Those are only useful if the DLCI is globally unique - for which there is no requirment. Every frame relay bearer (E1 line) could very well use the same DLCI numbers, and at which point it would be impossible to distinguish them in the logs.