Original sentence: A permanent virtual circuit (PVC) is a virtual circuit established for repeated/continuous use between the same data terminal equipments (DTE).SVCs are used in situations where data transmission is sporadic and/or not always between the same DTE endpoints
Edited sentence: A permanent virtual circuit (PVC) is a virtual circuit established for repeated/continuous use between the same  DTE.SVCs are used in situations where data transmission is sporadic and/or not always between the same data terminal equipment  (DTE) endpoints