Avaya one-X 9600 Series Administrator's Manual page 46

Communication Manager Administration
Communication Manager Feature Administration (continued)
Feature
Wideband Audio
46 9600 Series IP Deskphone Administrator Guide Release 6.0
Administration
To enable Wideband Audio, use the Change IP codec:
command on CM. Ensure that G.722-64K is first on the list of
codecs. Note that wide band audio works only for direct-IP calls
between two 96xx endpoints, either with both registered to the
same server, or registered to different servers when connected
by IP trunks. Calls between two 96xx phones connected by an IP
trunk do not currently support wide band audio when the call is
shuffled such that the media travels directly between the two
96xx IP Deskphones. Calls involving three or more parties, even
if they are all 96xx IP Deskphones, will not use wide band. Calls
between two 96xx IP Deskphones where audio is terminated at a
port network/gateway (PN/GW) media resource will not use
wideband.
Ensure that G.722 is added to all codec-sets that can possibly be
used between all regions on the IP-Network Regions form where
96xx IP Deskphones exist. Technically, G722 does not need to
be first. What is needed, however, is that all the non media
processor-supported codecs (G722, SIREN, etc.) be placed
before the media processor-supported codecs (G711, G729,
G726, G723).
2 of 2