Hi people, I have a question on the word and actual meaning of quality of service.. This is the scenario: == The customer here bought a 3.6 mbps link from the ISP to provide 3G and EDGE services for mobile users. And we have an online tool : http://www.speedtest.net/ Which tests your active internet link - in this case we put the 3G/HSDPA cards [from Huawei] that are so popular in Kenya at the moment - and the dial on the webpage moves to a certain high. However, we cannot get more than 2.7-2.9 mbps for some sites linked with an STM-1 link [ a site here refers to a base station or radio base station for WCDMA] And cannot get more than 1.6 mbps for a radio base station linked with 2 E1s. On the GPRS/WCDMA equipment - I have set quality of service [QOS] for HSDPA to be 2048kbps [2mpbs] Uplink ---- and 4096kbps [4mbps] downlink which will cater nicely for their 3.6 mbps dedicated link to the ISP. === Now the customer is convinced that the customers with 3G cards should get more than 2mbps for the sites with 2 E1 links --- but we cannot get higher than 1.6 mbps. Mind you we cannot even get more than 2.8 mpbs for the sites with an STM-1 link... but customer thinks we should get the same as what the ISP sends here [3.6 mbps] per mobile or 3G/HSDPA card user. Now I cannot pin-point the exact theory and calculations so that I can offer the explanation as to why customers cannot get the full 3.6mbps from ISP.... I am also not sure of the mathematics to explain why the 2E1s sites are getting lower than the sites with a full STM-1 link - : but I do know that 1E1 with 31 [timeslots or channels] = 64kbps X 31 ---> one for upload and the other download - Giving you a maximum of 1.98 mbps - but we are getting a high 1.6 mbps in a 3G/HSDPA card for these sites with no STM-1 links. ==== Anybody care to shed some light on these calculations from ISP to end users ? And what an end user will get ? I am having alot of grey areas and assumptions which are not very satisfactory.