MPLS VPNs transport layer 2 packets across the network and encapsulate transport protocols such as ATM, Ethernet, and SONET, allowing MPLS networks to seemlessly upgrade and replace legacy layer 2 networks without requiring network reconfiguration or using protocols higher than layer 2. In comparison, layer 3 VPNs must use the layer 3 Internet Protocol (IP).

A T1 local access connection to the Internet that can be configured to carry either 24 digitized data channels or one aggregated concatenated data channel at a rate of 1.544 Megabits Per Second (Mbps) that is connected via a T1 Wan Interface Card (WIC), Channel Service Unit / Data Service Unit (CSU/DSU), and Internet router.

Hosted VoIP eliminates the need to purchase or lease expensive PBX equipment to gain advanced calling features such as voicemail, automated attendants, extension dialing, call forwarding, call park, or call transfer. Hosted VoIP also eliminates the need to obtain service from multiple carriers for local and long distance calling, PBX tie-lines, private lines, etc. The service also includes Internet access and Quality of Service (QoS) to guarantee voice quality all on one invoice. Hosted VoIP offers freedom from legacy equipment costs, eliminates reliance on slow-moving traditional phone companies, multiple bills, and offers flexibility to deliver customized user productivity solutions for your company.

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The main limitation on DSL bandwidth speed is the distance from the customer premise to the local telephone company central office.

MPLS works across various data protocols such as the Internet Protocol (IP), Asynchronous Transport Mode (ATM), and frame relay. MPLS forwards most packets at layer 2 (switching) instead of at layer 3 (routing) level.

Ethernet access to the Internet is quickly becomming a popular service. Ethernet, which is usually thought of as the protocol used to connect computers and servers on a local area network (LAN), is now increasingly being used across metropolitan wide area networks (WANS) to connect corporate LANs to the Internet. The advantage of Ethernet Internet Access service is that connection speeds that range from 1 Megabit per Second (Mbps) to 1 Gigabit per Second (Gbps) can be accessed via the same protocol being used on corporate LANs.

Digital Subscriber Line Service (DSL) has become a very popular Internet access service. This is because DSL uses the existing copper pairs that already exist between most customer premise offices and the local phone company central office (CO). A DSL connection is set up between a DSL modem at the customer premise and a DSL access multiplexer, or DSLAM, at the phone company central office. Both voice and data can be run across the same DSL connection by using a filter to separate voice traffic from Internet traffic.

High-speed Microwave, 3G, and Satellite Wireless Internet service connects subscribers who are in remote locations or unique locations where DSL or other types of Internet access is unavailable. All you need to connect to wireless Internet is an unobstructed view of the provider Internet transmitter - receiver or satellite.

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Layer 2 MPLS VPNs (L2VPNs) are similar to Frame Relay, Asynchronous Transfer Mode, or point-to-point Wide Area Networks (WANs).