tools to mesure voice quality

piatthi

hi, just to ask what  tools that i can use to mesure factor that affect voice in VoIP Network, such as

 

- delay

- jitter

- packet loss

 

thank for your reply

12345

extended ping is one off the tools

 

also u can use "sh call active vo br" or " sh call his vo br" to see the drops / jitter as well as the early packets

 

these is on production n/w

 

regards

 

piatthi

thank for your reply, if i use extended ping, do i need to add -l to set size of ping packet = to size of voice packet?

because test is for voice,not for all traffic. since size of voice packet is fixe , i thing codec G711 (64k) +IP header , i can set approximatively size to 128k.

 

i use ping because i will these test directly between end PCs with IP Softphone installed

 

thank again

12345

Hi,

 

yes u can use it , but basically i use this for jitter and drops with tos byte ( for correct qos)

 

if u want more detail u can also use the SLA with jitter( their is voice under this object, but we still use jitter, see cisco doc)

 

regards

 

[email protected]

Piatthi,

 

You can use IPERF. It`s a free DOS based application that works in a client-server manner. You can personalize the traffic with the Cisco Voice options.

 

http://www.noc.ucf.edu/Tools/Iperf/

 

Best regards,

 

João Paulo Wolf

CCIE #22071