|
SBC T1 service is available within SBC's 12 local operating regions in CA, NV, TX, OK, NE, AR, MO, IL, WI, IN, MI and OH. Through resale and wholesale agreements with carriers outside of its region (MCI, Sprint, AT&T) SBC has offered T1 services virtually anywhere in the United States that T1s are available. SBC offers a full range of T1 product offerings from the basic SBC T1 line, to access, point-to- point, local service, long distance service, Frame Relay, ATM, and IP services. With SBC's impending merger with AT&T, traditionally "out of region" T1 services should begin to be provisioned more smoothly, as SBC lets leases with non-AT&T carriers expire, and moves towards integrating the two networks together. SBC is considered one of the " tier one " T1 carriers in the US . Tier one carriers are considered the old regional Bell operating companies (or what's left after mergers and consolidations) and the inter-exchange carriers. For more information on SBC's T1 services, go to Sbc.com. Building vs. Leasing? T1 carriers typically will have a combination of facilities-based services, where they actually own their network infrastructure, and lease-based facilities, where they lease wholesale sections of typically tier one network providers. Leasing among providers of T1s is a commonplace practice, and dates back to 1993 when MCI first challenged AT&T's long distance monopoly. As soon as a carrier like MCI established a small network, a few switches, and the ability to offer diversit y from the incumbent carrier, both customers and incumbent carriers bought service on the new carrier. Even today, it's cheaper for carriers to establish a "lease swap" arrangement to establish some diversity in each market, instead of building their own facilities, both in terms of bandwidth and switching capacity. Here are the websites to the other main providers of T1 services: |
SBC T1
