HiWe have call manager running in China and US , when i am calling to China from US i am getting MOS value of 4.5 in China IP phone while MOS value of 2 in US IP phone, what could be the reason for this as voice quality is good on china side but not ...

HiI have a very basic doubt, many people use the terms IPT and VOIP ( voice over IP) interchangeably, is the both term means the same or there are some differences?Ankush

we have CUCM in China , India and US, i have created ICT ( non gatekeeper control) between them, call is happening when i am calling from USA to China but when i am calling form china to USA call is getting dropped same thing is happening between US ...