future MOS value

[Chi Fai Leung]

Hi,

Cisco IP Phone 7800 and 8800 Series devices) as well as future IP phones no longer report MOS

The advantages of using concealed seconds (CS) and severely concealed seconds (SCS) metrics, a process that is more efficient and reliable on a typical enterprise environment

(What is the meaning on CS and SCS, instead of MOS?

http://www.cisco.com/c/en/us/products/collateral/cloud-systems-management/prime-collaboration/white-paper-c11-735409.html

[Manish Gogna]

Hi Chi,

The MOS estimate provides a number that is inversely proportional to frame loss density. Clarity decreases as more frames are lost or discarded at the receiving end. Consider the loss or discarding of these frames as concealment. Concealment statistics measure packet (frame) loss and its effect on voice quality in an impaired network.

Consider K-factor and other MOS estimators to be secondary or derived statistics because they warn a network operator of frame loss only after the problem becomes significant. Packet counts, concealment ratios, and concealment second counters represent primary statistics because they alert the network operator before network impairment has an audible impact or is visible through MOS.

More details here

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/service/7_1_2/cdrdef/cdradmin/cdrkfact.html

HTH

Manish