I've bought a Tlink (of Smart Link) usb voip adapter which contains "global voip" printed on the device. The Readme of driver contains information that it must be used with Skype. But X-lite and another softphones can detect that device as headset or in the speakerphone sections. This adapter has a fxo port and fxs which allows to use one analogic phone and at same time a voip service. The shortcut to switch from PSTN line to VOIP line(to make calls) is ## or #* but it only works using Skype.
Any ideas in how to get this adapter working using another softphones?