Complex sentence: All the Baby Bells, as well as other LECs, typically operate businesses in more than one LATA yet their services of local telephone calls are still defined by LATA boundaries, not their business areas.
Split into simpler sentences: All the Baby Bells, as well as other LECs, typically operate businesses in more than one LATA. Yet their services of local telephone calls are still defined by LATA boundaries, not their business areas.