As I know tls 1_3 don’t use the renegotiation, more info about renegotiation are here
The problem is a lot of clients, softphones don’t support tls 1_3, they support only tls_1_2.
The question is: there is way/mode to disable re-negotiation on tls 1_2 in pjsip?
Some software (postfix for example) admit the use of tls 1_2 + renegotiation disabled ( tls_ssl_options = NO_RENEGOTIATION
)