Hi, I just noticed a change in the behavior of the automatic switch from UDP to TCP. Previously if a proxy was configured on the account with ";transport=udp", it was sure that all requests for this account will use UDP (even if packet size is bigger than PJSIP_UDP_SIZE_THRESHOLD value). Apparently, the behavior is now different. Even with ";transport=udp" on the proxy, if the packet size is too big it will switch to TCP. Does somebody else observed that ? Also, I'm wondering if this change was expected ? and if doesn't break the fact that when specifying transport for the proxy we could expect it to be set to UDP ? In my opinion, the previous behavior was pretty good (and also permits to set the disable_tcp_switch per account as soon as there is a proxy which is a common case). I'm on r1476, I'll upgrade to latest and I'll also try to find what introduced this change in the behavior. Best regards, R?gis