1m •
2001
How do voices travel over the phone?
1940•
6.0
1950•
5.0
2001•
6.0
2002•
6.7
2009•
0
2007•
6.7
1948•
6.5
2001•
6.2
2004•
6.4
2003•
6.3
2008•
7.0
2002•
6.2
2008•
5.6
1963•
7.2
1988•
4.5
1996•
3.3
2024•
0
2003•
6.8
1979•
0
1932•
6.4
ONF | NFB • CA
Budget: $0
Revenue: $0
