What are three requirements for Quality of Service for voice calls? (Choose three.)
A. jitter less than or equal to 30 ms
B. PoE-supported Layer 2 switches used to connect IP Phones
C. one-way latency less than or equal to 150 ms
D. jitter less than or equal to 45 ms
E. guaranteed bandwidth of 384 kbps for a voice call
F. loss less than or equal to 1 percent
