Originally Posted by chaika
Olya, that is what a dialect is. If the speech in some area shows some marked distinctions that set it aside from others, then it is a dialect. Okanie is a dialectal feature. So are ikanie, jakanie, tsekanie, and others. So is something like pronouncing носят as носют if it is consistent, which is a morphological feature, not a phonetic one like the others I mentioned.
I worked on a project studying the phonological and morphophonemic aspects of Russian dialects in the 1960s when I was in grad school.