Shutdown the transport used for account registration. If this is set to PJ_TRUE, the transport will be shutdown altough it's used by multiple account. Shutdown transport will be followed by re-Registration if AccountConfig.natConfig.contactRewriteUse is enabled.
Specify the call flags used in the re-INVITE when hangupCalls is set to false. If this is set to 0, no re-INVITE will be sent. The re-INVITE will be sent after re-Registration is finished.