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You can try freeware <a href="http://startrinity.com/VoIP/SipTester/SipTester.aspx">StarTrinity SIP Tester</a>. It is able to simulate outgoing, incoming calls and SIP registration, DTMF events and record audio to wav files.

Why DNS use both TCP and UDP ports. And for which purpose it uses TCP and UDP.

1 Answers   Accenture, HCL,

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FTP?

9 Answers   BFL,

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Explain why is a gateway used?

0 Answers   BPL,

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How we can communicate (voice communication) in LAN by using core java?

0 Answers  

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What is IIOP used for?

1 Answers  

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Explain the purpose of ip address? And also Give the brief description about Class A,Class B and Class c?

6 Answers   HCL,

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What is a wildcard mask, and how is it different from a netmask?

10 Answers   Cisco, TCS,

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How to place an interface into trunking mode?

1 Answers   Cisco,

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Explain what does the protocol FTP do?

0 Answers   BPL,

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What is DMZ?

3 Answers   Wipro,

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Explain two-phase locking protocol.

0 Answers   Essar,

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How do all the layers communicate with each other?

2 Answers   TCS,

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