I2050Qossvc.exe - Avaya 1110 Fundamentals

Avaya 2050 IP Softphone
QoS is otherwise supported in Avaya 2050 IP Softphone Version 2 as it was in Avaya 2050 IP
Softphone Version 1.
Application thread priorities
Priorities are determined by thread priorities. The i2050QosSvc.exe application consists of
threads, which run the Graphical User Interface (GUI) and audio threads. Thread priorities
increase from the base priority of the process, as needed. The audio threads boost to high
priority, as recommended by Microsoft, while the GUI maintains a normal priority. Increasing
the process priority implies that the operating system may not perform properly. This concern
restrains the Avaya 2050 IP Softphone to use Windows recommended priorities to avoid an
unpredictable degradation in general OS performance.
Codec
The Avaya 2050 IP Softphone provides the following codecs:
• G.711 provides the highest quality (if the network facilities can handle the packet flow)
because there is no compression.
• G.729 is ranked best; it has 8:1 compression but no voice activity detection.
Frame size
The Avaya 2050 IP Softphone supports the following range of frame sizes
• G.711-64 A-law and µlaw: 10-960—10 ms increments
• G.729A: 10-960—10 ms frames
• G.729AB: 10-960—10 ms frames

i2050QosSvc.exe

i2050QosSvc.exe provides QoS tagging to outgoing 2050 IP packets. When the Avaya 2050
IP Softphone application opens a socket, the i2050QosSvc software monitors traffic destined
for the specified IP address and port. i2050QosSvc software sets DiffServ QoS priority bits.
802.1 p priority bits in the 802.1Q header can be set. 802.1Q headers must be enabled by the
Network Interface Card (NIC) or NIC driver. The i2050QosSvc does not fill in other fields in the
802.1Q header (for example, no values are assigned to the VLAN ID field).
Important:
VLAN ID
144 IP Deskphones Fundamentals
Comments? infodev@avaya.com
February 2013