E-Line Carrier Ethernet Service is divided into two parts:-
1. Ethernet Private Line aka EPL:- Ethernet Private Line is the replacement of legacy dedicated TDM private line for point to point connections consequences save cap-ex as well as op-ex. It is dedicated port and ethernet Virtual connection per UNI.
2. Ethernet Virtual Private Line aka EVPL:- Ethernet Virtual Private Line is the replacement of legacy frame relay and atm circuits. Multiple services can be multiplexed in single UNI.