Originally Posted by Lzen
depending on the size of the cell site, and how much customer traffic, there can be multiple T1s from the Digital cross connect. say you have 4 T1s; 3 could be allocated for voice, and 1 for data (EVDO).
so you could still get EVDO if that particular T1 hasn't gone down etc, while still having no voice connectivity on the other 3
Fiber (4G, which also can handle 3G), however, removes this; and voice and Data can be adjusted remotely at the core router level based on traffic on that particular tower. They divide Voice and Data via different light level frequencies in the fiber; rather than an 'either/ or" scenario with copper (T1s)