For example, switched virtual circuits
(SVCs) have been suggested by a few DSLAM vendors, but today no DSL integrated access device (IAD) or router supports this capability.
The DSLAM will translate the required bandwidth to dedicated PVCs (Permanent Virtual Circuits
) for transmission over KPN's Frame Relay network.
Real-time, secure transfer of simulator data over the DMT network is accomplished by employing a combination of technologies including encryption, switched virtual circuits
and ATM (asynchronous transfer mode), which minimize the delay time, or latency, for data transferred between simulators.
When deployed in ATM networks the module simplifies provisioning because it reduces the number of virtual circuits
that must be managed in the network.
The FrameStart product line helps reduce the time required for installing and configuring Permanent Virtual Circuits
, and monitoring the reliability of virtual circuits
in a frame-relay network.
A virtualised network partitions resources in many different ways, e.g., virtual circuits
(EVPLs), virtual wavelengths (Optical Transport Network -- OTN), virtual switches (VSIs) and virtual networks (VPNs, Optical Virtual Private Network -- OVPNs).Virtualisation of the network provides network efficiency, i.e.
ExOS 5.4 incorporates Dynamic Virtual Circuits
(DVC), which can be used to control bandwidth allocations by groups or IP hosts, by application or by VLAN identification or to allow fair sharing which ensures that all users receive equitable share of the bandwidth.
VPNs provisioned using technologies such as Frame Relay and Asynchronous Transfer Mode (ATM) virtual circuits
(VC) have been available for a long time, but over the past few years IP and IP/Multi-protocol Label Switching (MPLS)--based VPNs have become more and more popular.
<p>Some of us can remember when there was resistance to moving to frame relay networks because of the loss of control over the exact routing and loading of permanent virtual circuits
(PVC) and the resultant loss of control.
Features include support for full ADSL data rates, IP routing and other networking functions, an ability to support both VoDSL and VoIP-over-DSL applications and hardware support for user-definable virtual circuits
The goal in developing On-Line Co-Design was to create a conduit through which customers could work with the company's engineering department to create virtual circuits
representative of how the Multi-Mix process could be applied to their specific design challenges.
Establishing Switched Virtual Circuits
, which are dynamic by definition, results in more efficient utilization of network resources.