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TT0-201 · Question #58

You are troubleshooting a problem in which several IP phones cannot access an SIP proxy. You have been told that all SIP proxies and clients in the company are using the standard port as a default…

The correct answer is D. The wrong port number is specified in the proxy server. See the full explanation below for the reasoning.

Question

You are troubleshooting a problem in which several IP phones cannot access an SIP proxy. You have been told that all SIP proxies and clients in the company are using the standard port as a default. When you view the various configuration screens, you see the following information:

  • DNS server: dns1.ctpcertified.com
  • DHCP: Auto.
  • SIP proxy: sipproxy.ctpcertified.com: 8080
  • IP address: 192.168.2.33
  • Subnet mask: 255.255.255.0

What is the most likely cause of the problem?

Options

  • AThe wrong DNS server has been specified.
  • BDHCP settings are not configured correctly.
  • CThe wrong subnet mask has been specified.
  • DThe wrong port number is specified in the proxy server.

How the community answered

(25 responses)
  • A
    4% (1)
  • B
    16% (4)
  • C
    8% (2)
  • D
    72% (18)

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