This structure describe the account config specific to IP address change.
pj_bool_t pjsua_ip_change_acc_cfg::reinv_use_update |
For refreshing the call, use SIP UPDATE, instead of re-INVITE, if remote supports it (by publishing it in Allow header). If remote does not support UPDATE method or somehow the UPDATE attempt fails, it will fallback to using re-INVITE. The reinvite_flags will be used regardless whether it is re-INVITE or UPDATE that is sent.
Default: PJ_FALSE (using re-INVITE).