Yahoo messenger, skype, microsoft messenger and vonage offer a subscriber the ability to"call" someone using softphone /ata /gateway /ip phone /iad. however, several isps are blocking or degrading this service in order to force a consumer to use a isp sponsored service. \n\nstates such as the uae block this technology outright while us corporations, such as clearwire, claim that they might degrade the quality of competing services by adding choppy and delayed services.\n\nspeedvoip is a leader in circumventing voip blocking imposed by isp.