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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).
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VoIP over Internet Protocol (IP), or VoIP, is a managed voice and Internet solution for businesses that falls into the industry niche referred to as IP Centrex (a feature-rich hosted analog voice solution), or Hosted Private Branch Exchange (PBX) that provides many features and capabilities that transform business communications beyond what traditional voice and data networks can offer.
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.
Ethernet can be used to connect twisted copper pair networks and to connect fiber optic cable networks.
MPLS network is particularly important to businesses running applications that require latency such as VoIP, ERP, SAP, etc.
Ethernet provides a great local access medum to connect LANs to the Internet and is quickly becoming the access method of choice were it is available.
POTS local loop speed is increased by up to 50 times when a DSL modem is attached at the customer premise and a Digital Subscriber Line Access Multiplexer (DSLAM) is connected to the local access loop at the local telephone company central office (CO).
High-speed microsave and satellite Internet connections for business can replace or back up traditional terrestrial landlines such as Internet T1s and Digital Subscriber Line (DSL) service. With wireless Internet service in place as your primary or backup Internet connection, you can always count on low-latency connection to the Internet that means you will have an "always up", "never down", "zero outage" service that eliminates wasted time and increases productivity.
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).
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