One of the advantages of VoIP is that voice and Internet services are delivered over the same local loop access circuit using the Internet Protocol (IP).

An Internet T3 (also spelled Internet T-3) is a broadband Internet connection that transfers signals at a rate of 45 Mbps. Both Internet T1 and T3 services are highly-reliable circuits that are usually guaranteed by a Service Level Agreement.

VoIP can provide big company telephone features on a small company budget. You are not merely trading one system for another: VoIP represents the next generation of telephony and messaging: Control calls anytime from anywhere, view incoming calls, view missed calls, view calls you have placed, view your voice messages like emails (find the voice message you want to listen to first – listen to it through your phone, remotely, or on any sound-enabled computer, forward it to another user or an email box), click to call people in your contact directory, enjoy four-digit dialing to all of your locations, etc.

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.

As business networks face increasing numbers of applications with low latency and high bandwidth demands, MPLS allows network administrators to specify which applications should be prioritizes above others so that data flows across the network is an organized fashion that reflects the relative business importance of various type of data.

Ethernet is the most widely-used data network protocol today. Standardized as IEEE 802.3, the Ethernet protocol is used for local area networks (LANs) at the Layer 1 (Physical Layer) and Layer 2 (Data Link Layer) of the OSI networking model.

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.

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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).