49. Which of the following would be used to initiate a call from the contacts listings of the email application?
A. Telephone Application Programming Interface (TAPI)
B. SMTP
C. SRTP
D. Messaging Application Programming Interface (MAPI)
Answer: A
50. Can DiffServ be enabled at the 802.11 wireless access point to support VoIP?
A. No, wireless access points work only with data.
B. Yes, if the latest 802.11 DiffServ standard is deployed.
C. No, the 802.11 standard makes allowances for this ability.
D. No, DiffServ refers to and applies to layer 3 technologies.
Answer: D
51. The converged system connects to the Public Switched Telephone Network (PSTN) via analog trunk lines. Several users have complained that when making a call the system intermittently does not complete or drops the calls to external numbers. Which of the following are the MOST likely causes of the issue? (Select TWO)
A. An analog number is not available to take calls across the trunk line
B. The analog trunk line
C. The analog trunk interface on the system
D. An analog dialing code to the external number is incorrect
E. Users are misdialing the analog trunk number
Answer: BC
52. Which of the following BEST describes a PBX's architecture if it has no ability to upgrade to VoIP?
A. TDM based
B. Asynchronous Transfer Mode (ATM) based
C. Statistical Time Division Multiplexer (STDM) based
D. PBX based
Answer: A
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