Altec Lansing has introduced its new T612 digital audio system for the iPhone and iPod. The T612 sports iPhone-complementing features like support for incoming calls. If a call comes in while music is playing, the iPhone gives priority to the call by pausing the music, and once the call is completed, and the iPhone is re-docked in the T612, the music resumes playing at the same place in the same song. Other features include internal GSM shielding…