feature.dtd

SIP（Session Initiation Protocol）是由IETF定义

<!ELEMENT featureServer (type, group, uaVMServers?)>
<!ATTLIST featureServer host CDATA #REQUIRED
                        port CDATA #REQUIRED
>

<!ELEMENT type EMPTY>
<!ATTLIST type value CDATA #IMPLIED>

<!ELEMENT group EMPTY>
<!ATTLIST group value CDATA #IMPLIED>

<!ELEMENT uaVMServers EMPTY>
<!ATTLIST uaVMServers   host CDATA #REQUIRED
                        firstPort CDATA #REQUIRED
                        lastPort CDATA #REQUIRED>