Hi, I am having problem with key input during the extension transfer. ie. I call a call center. they have menu like press 1 for English press 2 for .... I tried to press 1 or 2 but they simply can't get my input at all. so I am always stuck at the menu. I tried with the hardphone (via Linkysys ATA) and softphone (X-lite) but both don't really work either. However, Skype software has no problem at all. Can you please solve this as it is very critical to make a proper call? Thanks!