[asterisk-users] Where do I find error message descriptions?

[Thorben Jensen]

Is there a place where I can find more description of error messages I
see in asterisk CLI?
I get this message very often when watching the CLI:

[Nov  4 12:12:42] ERROR[21533]: app_queue.c:3083 ring_entry: Found a
channel matching iterface SIP/213_323 while status was 1 changed to 0

I have Googled it but no answers but I found the code, but I'm no good
at C code, perhaps someone can tell me whats going on?

        if (!qe->parent->ringinuse || !tmp->member->ignorebusy) {
                if ((tmp->member->status == AST_DEVICE_UNKNOWN) ||
(tmp->member->status == AST_DEVICE_NOT_INUSE)) {
                        newstate =
ast_parse_device_state(tmp->member->interface);
                        if (newstate != tmp->member->status) {
                                ast_log(LOG_ERROR, "Found a channel
matching iterface %s while status was %i changed to %i\n",
                                        tmp->member->interface,
tmp->member->status, newstate);
                                update_status(qe->parent, tmp->member,
newstate);
                        }
                }

Regards
Thorben