[Asterisk-Users] Satellite Providers

[Steve Underwood]

Michael Welter wrote:

> Michael D Schelin wrote:
>
>> The delay in the air is minor. Radio travels very fast through the 
>> air. Almost at the speed of light. It's the electronics that are 
>> causing the delays.  The less electronics touching your signal the 
>> better.   The up and down is very fast.  But then you have all the 
>> converts and the land line links to factor in.  Microwave also has 
>> delays such as the Motorola equipment which is only half duplex.  
>> This will also incress the time.  Max is right, check into some 
>> ground based systems.
>>
> Huh?  44,000mi (up and down) @ 186,000mi/sec = 0.24sec.  Not a minor 
> latency for voice comms.

Before undersea fibre made undersea cables cheap, satellite was far 
cheaper than undersea copper. In those days intercontinental calls were 
usually satellite one way and undersea cable the other. When satellite 
was used both was conversation suffered badly. If you made a call from 
Europe to American, and it was satellite both ways because the cable was 
all used up you really know about it, and often abandoned the call. 2 x 
0.24s is getting beyond the limit of what is reasonable.

Regards,
Steve