Which codec does Cisco recommend tor WAN link?
A.
G.711
B.
G 723
C.
G 728
D.
G 729
Explanation:
When bandwidth is abundantly available, as in a LAN environment, the Cisco IP phone default G.711 is used in RTP. When bandwidth is at a premium, as on a slow WAN link, G.729 is used.
Link: http://www.globalknowledge.fr/PDF/WP_UnifiedComm.pdf