You are the network administrator at Certkiller . Your newly appointed Certkiller trainee wants to know what the recommended bandwidth for a Cisco SoftPhone is.
What will your reply be?

A.
16 Kbps

B.
56 Kbps

C.
64 Kbps

D.
80 Kbps

E.
128 Kbps

Explanation:
Codec Selection
Cisco IP SoftPhone supports G.711, G.723, and G.729a codecs. Cisco recommends G.729a
low-bandwidthcodec configurations in deployments with telecommuters connecting their Cisco IP
SoftPhonesacross the WAN.
Because Cisco CallManager does not support the G.723 codec, Cisco IP Softphone has two bandwidth
codecsettings to use: G.711 is the default setting, with a user-configurable option to select the
low-bandwidthcodec setting of G.729 on the TAPI Service Provider (TSP) client. Reference: Cisco IP Telephony Solution Reference Network Design (SRND), Cisco CallManager Release 4.1, April 2005.