MartinM , I think for those of us, who don't use OBi, it'd be nice if you offered a simple application, that makes a test call to SIP server using your dedicated test account, sending specific test audio stream back and forth, measures stats and report them back to user. Application could be based on any free SIP stacks available around. No OBi device or using some personal account would be required. And the test results would be actually accurate. I guess we'd all appreciate such tool, offered by your service
Keep it simple, it'll become complex by itself...