Ip Audio Settings - Avaya T3 Service Manual

IP audio settings

The IP audio settings can be adjusted to local conditions.
Generally speaking, this is carried out by the network specialist. He/she must determine
the network and transmission quality. This data is then used to decide,
•
which protocol to use (G.711, ...); if necessary, a greater traffic load requires
another Codec (G.729)
•
whether you want to receive small packets with little information but faster
•
whether you want to receive larger packets with more information but slower
(the setting of 20ms for the packet size (Delay) is recommended)
•
how to determine the jitter buffer depending on these points
IP audio settings
Before "useful communication" the IP telephone and IP Office "discuss" which shared
Codec to use. Setting of the Codec on the IP Office side occurs via the manager.
The Codec is selected according to the following rules:
•
The Codec set in the manager is always used, if it appears in the Prio list of the
IP telephone.
•
The Codec set under Prio 1 in the IP telephone is used for the manager setting
"autodetect" or for a Codec unknown to the IP telephone.
Jitter buffer
short
normal
Action
long
auto
Do not change
Audio Codec priority list
Prio1 .. Prio n
TOS/DiffServ parameters
Bit 0 (off)
Bit 1 (off)
Bit 2 (off)
Bit 3 (on)
Bit 4 (off)
Bit 5 (off)
Bit 6 (off)
Commissioning options for an IP telephone
Codec
Action
Delay
Action
Delete priority
G.711A
G.711 µ
G.729
10 - 60
ms
47