Allow Parentheses in Contact-URI
Step1. Add the following advanced property at the [SIP SERVER] ->[Configuration]->[Advanced]
net.addrport.localhost.pattern=\\(
Step2. In the DialPlan, add the following variables to the Deploy Patterns of the rule you use.
&net.sip.replacecontact = false&net.sip.replacecontact.nat = false&net.sip.replacecontact.global = false