What is SRST and MGCP fall-back?
Why is it recommended to use a separate Vlan for IP Phones?
What is 802.3af and 802.3at?
What are TCS and OLC in H323?
What is ANI and DNIS?
What is the use of NTP?
What is FXO and FXS?
What are the two POE methods?
What is line group in CUCM?
What is early media? Explain the call flow.
What are the different call flows supported in H323?
What is T1 and E1? How many D and B channels do they have in case of ISDN?
What are the different versions of PVDM?
What is Dial-peer?
What is RTCP and what is its use?