Just installed KXTA-624 w/ TVS-50, program ext to show as DSS/BLF on main phone. after program cfbna the light started to blink, ext 104 to vm on ext.101 the dss light for 104 blinks away???? any way to get this to stop without taking dss key away??? never used the 624 on tvs50 before, now I know why the price was so good.....