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).

In a T1, each of the twenty-four 64 Kbps channels can connect to the Internet individually or the Internet T1 can be configured to aggregate all of the 24 channels into one large 1.544 Mbps concatenated channel.

Voice over IP (VoIP) sends voice data in packets using the Internet Protocol (IP) instead of analog waves as does plain old telephone service (POTS) lines.

The ADSL downstream receiving rate from the Internet usually varies from 1.5 to 9Mbps while the upstream sending rate usually varies from 16 to 640 Kbps.

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

Multiprotocol Label Switching (MPLS) is a data communication standard that creates separate data paths for specific sequences of packets. Each packet is identified by a label that is encapsulated into each packet. This eliminates the need for Internet Protocol (IP) routers to look up the IP address of the next router in the network in order to forward the packet and as a result, speeds up the network.

Connect your business local area network (LAN) to the Internet using the same protocol that operates on your LAN: Ethernet. This increasingly popular Internet access solution makes it easy to connect all of the computers on your LAN at your company to the Internet with minimal configuration and cost.

Asymetric DSL (ADSL) allows more bandwidth to move data toward the end user (multimedia and text) than from the end user (mostly keystrokes and mouse behavior) to the Internet.

Wireless Internet is a new way to access the Internet at high speeds from anywhere in the United States. Wireless Internet is delivered via terrestrial transmitters and receivers or by satellites that orbit the Earth while transmitting and receiving high frequency radio internet data to a small dish located at the customer premise. Two-way satellite radio system is reliable, easy to set up and is mobile. You can move the subscriber terrestrical or satellite dish and re-connect with ease.

Have you been frustrated trying to find telecommunications information on the Internet? Are descriptions of services unclear and so carrier specific that you do not trust the content? Telecom Links understands that there is a shortage of clearly-written information about the myriad of telecom services available today. Consequently, the Telecom Links mission is to be the most comprehensive source of telecommunications information on the World Wide Web.

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