[asterisk-users] Teliax Quality of Service

[Douglas Garstang]

I don't think creating a network without a single point of failure is unreasonable.


-----Original Message-----
From: asterisk-users-bounces at lists.digium.com on behalf of Stephen Bosch
Sent: Sat 8/4/2007 3:07 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] Teliax Quality of Service
 
SIP wrote:
 > There are also lots of big carriers masquerading as big carriers. ;)

*lol*

> If the ONLY people who could get into the business were the ones who 
> could, before offering any services to customers, afford to build out 
> multiple edge systems for accepting incoming calls, each with multiple 
> interfaces connected to multiple subnets via multiple switches using 
> multiple upstream providers, you would have ONE single choice for an ITSP.
> 
> And AT&T doesn't have that amount of redundancy in their network. 
> Working in the carrier networking business, I can assure you that we've 
> NEVER run across a SINGLE carrier network (not from the largest to the 
> smallest) that has redundancy in ALL aspects (or even MOST aspects) of 
> its network. This is why there are uptime policies that allow a 
> percentage of outages to occur. Triple 9 uptime (Exceedingly rare, but a 
> purported goal -- 99.999%) still allows 15 full hours of downtime a 
> year. And that rarely includes the occasional lost packet or latency.

In other words, you can blame the marketing departments in various big
carriers for creating these unrealistic expectations in the marketplace :)

-Stephen-

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