[cisco-voip] Providing phone service in Mumbai and Johannesburg

[Matthew Saskin]

I should clarify - in both of my previous examples there were quite a 
bit of calls traversing the WAN, hence the quality reference.

If you have local dial-tone in all these cases, I have yet to see any 
issues in my experience other than the aformentioned delayed dial tone - 
all sites are totally usable with local dial being provided.

-matt

Matthew Saskin wrote:
> I've had the following setups running with quality ranging from "usable" 
>   to "good".  Provided end-user expectations are managed properly this 
> can  be made to work.
> 
> -Cluster located in Tokyo servicing offices as far out as Sydney (200ms rtt)
> -Cluster located in Eastern United States servicing offices in London 
> and Bangalore.
> 
> Other than what you already mentioned (delay to dial-tone) things are 
> rather usable.
> 
> -matt
> 
> Robert Kulagowski wrote:
>> Opinions / experience wanted:
>>
>> Backhaul call control to a CM cluster in London or put a standalone CM 
>> at each location?  RTT isn't terrible, and in Sydney (which is 
>> backhauled to U.S.) the latency results in delays with dialtone, etc, 
>> not voice quality (because we only do centralized VM, it's essentially a 
>> half-duplex stream, so the latency isn't really noticeable).
>>
>> Concerns are the cost of a CM at each location, since offices have to 
>> pay for their own equipment.
>>
>> In a perfect world, Cisco would have a version of IOS that provides 
>> local call processing (so that sites never go into SRST), with global 
>> configuration using CallManager (so that you're not learning a whole new 
>> paradigm / programming IOS)  So CME and SRST mode don't fit the bill 
>> because the help desk isn't trained for IOS-level access...
>>
>> Also, in this perfect world, you can forward any line on the phone.
>>
>> _______________________________________________
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> 
> 
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