MPLS IP VPN with VOIP Phone Service

MPLS IP VPN is a group of VOIP Phone Service methods for using the power of Multiprotocol Label Switching  to make Virtual Private Networks (VPNs).It operates at an OSI Model VOIP Phone Service layer that is generally considered to lie between traditional definitions of Layer 2 (Data Link Layer) and Layer 3 (Network Layer), and thus is often referred to as a "Layer 2.5" protocol. It was designed to provide a unified VOIP Phone Service data-carrying service for both circuit-based clients and packet-switching clients which provide a datagram service model. VOIP Phone Service can be used to carry many different kinds of traffic, including IP packets, as well as native ATM, SONET, and Ethernet frames.

In computer networking and telecommunications, Multi Protocol Label Switching (MPLS IP VPN ) refers to a highly scalable, protocol agnostic, data-carrying mechanism. In an MPLS IP VPN network, data packets are assigned labels. Packet-forwarding decisions are made solely on the contents of this label, without the need to examine the packet itself. This allows one to create end-to-end circuits across any type of transport medium, using any protocol. The primary benefit is to eliminate dependence on a particular Data Link Layer technology, such as ATM, frame relay, SONET or Ethernet, and eliminate the need for multiple Layer 2 networks to satisfy different types of traffic. MPLS IP VPN belongs to the family of packet-switched networks.

Different technologies were deployed before with similar goals, such as frame relay and ATM. MPLS VOIP Phone Service technologies have evolved with the strengths and weaknesses of ATM in mind. Many network engineers agree that ATM should be replaced with a protocol that requires less overhead, while providing connection-oriented services for variable-length frames. MPLS VOIP Phone Service is currently replacing some of these technologies in the marketplace. It is highly possible that MPLS VOIP Phone Service will completely replace these technologies in the future, thus aligning these technologies with current and future technology needs.[1]

MPLS IP VPN dispenses with the cell-switching and signaling-protocol baggage of ATM. MPLS IP VPN recognizes that small ATM cells aren’t needed in the core of  networks,  modern optical networks (as of 2008) are  fast (at 40 Gbit/s and beyond)   full-length 1500 byte packets do not incur significant real-time queuing.

MPLS IP VPN attempts to preserve the traffic engineering and out-of-band control that made frame relay and ATM attractive for deploying large-scale networks.

While the traffic management benefits of migrating to MPLS VOIP Phone Service are quite valuable (better reliability, increased performance), there is a significant loss of visibility and access into the MPLS VOIP Phone Service cloud for IT departments