Dear, I need to make a script to modify the contact header field,I need to remove the string "+ sip.instance =" <urn: uuid: 832028f41e6258c46e8de1e8dd3d6723360b5c74> "; reg-id = 1"String before normalizing:Contact: <sip: 3001@10.0.1.56: 50772>; + sip...