Hello,
I've been chasing an issue where the connector switches from Homebrew to YSFREF for no apparent reason. Yesterday I finally captured the event in the OS4+ log and calllog after 12 hrs of monitoring. I'm using the OS4+ to bridge C4FM from WiresX simplex node to DMR TG 31399.

18:56:43 pwr: batt 100% 4126mv usb 1500ma cpu 34.9Â°C chg 0ma
18:56:45 homebrew: ping sent
18:56:45 homebrew: pong received
18:56:45 c4fmct: got header
18:56:45 c4fmpkt: header
18:56:45 dst: 40557G0861 src: M3ZHI
18:56:45 dl: KE8O ul: GB3HD
18:56:45 c4fmct: voice call started, dst: 40557G0861 dgid: 0 src: M3ZHI id: dbde226ffa959d5f
18:56:46 csd: dmr cs M3ZHI query took 350ms
18:56:46 c4fm4dmrcon: new call, cid dbde226ffa959d5f
18:56:46 c4fm4dmrcon: call start, using ids dst 31399 src 2351446 for this grp call
18:56:50 homebrew: ping sent
18:56:50 homebrew: pong received
18:56:55 homebrew: ping sent
18:56:55 homebrew: pong received
18:56:56 c4fmct: got terminator
18:56:56 c4fmpkt: header
18:56:56 dst: 40557G0861 src: M3ZHI
18:56:56 dl: KE8O ul: GB3HD
18:56:56 c4fmct: call ended, dur 10.9s ber 0.3% loss 0.0% rssi -47
18:56:56 srvaddrdl: looking up wx ids 1: Y9E6D
18:56:56 wxtrk: got connector type 10 server ysf.glorb.com:42000
18:56:56 cfgarea: storing profile #0
18:56:56 srvaddrdl: query took 280ms
18:56:56 net-conn: active deinit
18:56:56 homebrew: task terminating
18:56:56 ysfref: init (callsign: KE8O server: ysf.glorb.com:42000 mode: c4fm)
18:56:56 ysfref: connecting to ysf.glorb.com:42000
18:56:56 ysfref: waiting for first pong
18:56:56 ysfref: got first pong, getting status
18:56:56 ysfref: connected to ysf.glorb.com:42000 (209.190.4.10)
18:56:56 ysfref: received status response
18:56:56 ysfref: sending poll
18:56:56 ysfref: received status response
18:56:56 ysfref: received poll
18:57:00 net-chk: ok (28 ms)