Siemens SpeedStream 4200 (13A4200001) Bridge "adsl blinking" Questions

I have a D-Link G604T Modem/Router and ADSL light blinks after I have a phone call and wont log on to Internet. Can't log on to Internet for approx. 1 hour after a phone call when adsl light ...

...ADSL connection I have an old SpeedStream 4200. It has worked perfectly up until now. Internet connection will be fine for a while and then just drop out for no reason. I notice that the DSL light ...