Yes, i’m using TCP for SIP for local endpoints and UDP for external trunks, no TLS, no Websockets.
Here is my transports section settings:
[global]
type=global
user_agent=PBX
regcontext=registerstate
keep_alive_interval=0
disable_multi_domain=yes
mwi_tps_queue_high=5000
mwi_tps_queue_low=-1
[transport-udp]
type=transport
protocol=udp
bind=LOCAL_IP:5060
local_net=NETWORK
[transport-tcp]
type=transport
protocol=tcp
bind=LOCAL_IP:5060
local_net=NETWORK
I use transport-tcp for endpoints (phones) and transport-udp for trunks.
Can this be an issue or using TCP in general is an issue?