I put in an SL2100 and customer is used to no privacy on the trunks. If I set the trunk to no privacy in 14-01-19, the trunk will flash slowly when busy and quickly when on hold. I don't like that. This is a very busy auto repair shop and there will be un-intended barge ins trying to distinguish between slow flash and fast flash.

If I set 20-13-09 20-13-15 20-13-16 and 20-13-24, the feature will work for incoming calls only, not outgoing. NTAC says 21-01-03 has to expire. I set that to 1 second and still no workie. System is on 4.20 software.

It has to be possible.