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Message: <blockquote data-quote="nmrnehru" data-source="post: 3669354" data-attributes="member: 105202">Hi Guys, Let me share my thoughts here. There is no direct relationship between the quality of Broadband internet and the ISP's International Backbone capacity / Bandwidth. Broadband internet is based on shared BW conecpt. ISPs use a contention ratio to limit the broadband usage. Say if SLT uses 1:50 "Contention Ratio: for broadband, 1M international BW is sgared among 50 number of 1M customers or 25 number of 2M customers ( 1M*50 or 2M*25 ). in practical , if 1:50 contention  ratio is used 10,000 customers of 512Kbps(0.5M) will be allowed to use maximum of 100Mbps international BW ( 1:50 == 100: 0.5M*10000 ). The assumption behind this business model is, all customers are not going to use the internet simultaneously and with full capacity. Therefore SLT / Dialog / any ISP is not going to give you their full international BW to broadband customers. They will throttle the usage according to the contention ratio ( ex 100M) that they have. So comparing the international backbone capacity won't be the measure of quality. AT&T , Sprint, Verizon etc have terrabits of capacity. Only thing that affect the quality is the international network path. If an ISP has multiple direct connectivity with other world class ISPs ( Called Tier 1 ISPs), their internet quality will be good. SLT has STM1(~155M)/STM4(~620M) level connectivity to USA, Italy, UK, Singapore and Honkong. Simillarly Dialog has direct STM1 (155Mbps) connectivity with Tier 1 ISPs like Sprint (UK) , France Telekom, Verizon - Europe, Verizon - Asia, Cable and Wireless , Datahop (UK), Telekom Malysia,. The total international BW is closer to 1Gbps. Other Srilankan ISPs have only one international connectivity. The quality of the international path can be checked by "ping / traceroute" commandsin the windows / Linux machine ( ex ping <a href="http://www.yahoo.com" target="_blank">www.yahoo.com</a>) . When i compare the ping latency result of SLT and Dialog for some destinations, dialog shows better results. Only difference is SLT uses wireline to connect customers and Dialog uses wireless links. Therefore lastmile delay ( ISP to Cutomer) is ~20ms for SLT and 40-60ms for Dialog's Wimax. We should check the quality of  both ISPs before sharing our comments. I can share my test results here. It is pointless to say , SLT is good snce it has 3GBps backbone.</blockquote>

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