[cisco-voip] Cisco webex cloud connected audio - calculating latency

[Terry Cheema]

HI Guys,
 
I have a quick question on conference bridge latency measurements. When we try to achieve a good quality audio on a conference call like a normal one-to-one normal audio call (with one way latency within 150 ms) – how is the the latency calculated – 
 
1) Latency from Bridge (say in HK which streams audio) > All participants (depending on their location)
For example: UK to HK for participant in UK 
SYD TO HK for user in SYD 
and so on

Or 
 
2) Participant 1 (say UK) to HK bridge> HK bridge to Participant 2 (say UK)  
 
One way latency becomes : UK(participant 1) to HK + HK to Participant 2 (again in UK)  
Which becomes the double from whats in point 1
 
 
May be I am just over thinking but If anyone can please point me to a resource confirming one way or the other would be great. Just trying to calculate latency for an inter-regional audio conference solution using Cisco cloud connected audio.
 
Thanks,
Terry

Sent from my iPhone