SIP network discovery by using SIP message probing

Currently more and more SIP based networks have been deployed in enterprises and communication carrierspsila domain to provide NGN services. With the widely adoption of SIP, information discovery in SIP network, which is the first step of SIP management, becomes a key challenge to operators and service providers. To address the problem, this paper presents an automated SIP network discovery approach based on SIP message probing. With our approach, minimal number of SIP request messages will be sent out to probe SIP entities and then targeted information could be obtained by wrapping and parsing the received responses. Experiment results show that the approach can effectively obtain SIP information for management while it costs limited probing messages.