Sierra Tel Business Systems Sierra Tel Business Systems Listed in Computers and Telecommunications - Listings 298 W. Fallbrook Ave.Fresno, California 93711 559-248-1800 Claim Listing Flag Listing Overview Map & Directions Contact/Other Phone 559-248-1800Listing Category Computers and Telecommunications - Listings Please login to claim this listing. Username*: Email*: Password*: Log in | Lost your password?