Comments
www.cisco.com/warp/public/cc/so/neso/vvda/iptl/5nine_wp.pdf
Posted by crouse
Yes i think its impossible to achive 100% reliability
Posted by HamidAliKhan
Ok it is impossible, but it is concept in telecom that is use for calculations.
Posted by waqqas1
yep its impossible to achive 100% reliability but for some info see below links,it may provide you some help
http://www.huawei.com/publications/view.do?id=2819&cid=5122&pid=61
Posted by Hash007
The 99.99% reliability in TDM and IP Testing is almost impossible to achieve.Because there are so much losses that would effect its reliability.
Posted by sagitraz
I think that 99.999% is hard to do even in traditional TDM deployments. It requires a lot of discipline and planning in operations to do this. Many providers are deploying VOIP services over old IP networks that were not designed to give 99.999% availability. IP was always a secondary non-critical service by many consumers and was not considered a critical service by Telephone companies. The IP networks need to be able to provide 99.999% availability before any service riding on it will be able to.
Posted by elie
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