It&#x27;s been a long time since I&#x27;ve tried to do serious SIP usage on Linux, but way back when, I could never get a client that worked consistently. One or the other would work fine for a while, until either the client, a library elsewhere on the system, or the SIP server would update, and then it&#x27;d misbehave terribly and I&#x27;d have to go through the roulette and try to find another client that worked well (not always possible). Is the situation better now? What do you use?