Differences between PVCs And SVCs

• PVCs

  • Staticly Defined at Configuration, Unless PVC Parameters Need to be Modified
  • Connection is Always Configured Whether There is Information to Send or Not

• SVCs

  • Dynamically Established When There is Information to Send (Call-by-Call Basis)
  • Connection is Released When There is No More Information to Send

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Slide 3. Provisioning PVCs And SVCs

The primary difference between PVCs and SVCs is whether the connections are provisioned or established. Both types of connections need to be defined. The difference is when the connections are defined and resources allocated.

PVCs are typically provisioned by the network operator. The network operator can be the carrier (public services) or the MIS manager (private networks). Once the PVC is provisioned, the connection is available for use at all times unless there is a service outage. On the other hand, SVCs are established by the end user, not by the network operator. Prior to each use an SVC is established to the destination end user. The connection is cleared after use.