A method of monitoring and/or configuring at least one remote Intelligent Electronic Device (IED 2 ) located in a remote substation (S 2 ) of an electrical power system, said remote Intelligent Electronic Device (IED 2 ) being linked by a teleprotection link with a local Intelligent Electronic Device (IED 1 ) located in a local substation (S 1 ), said local Intelligent Electronic Device(IED 1 ), remote Intelligent Electronic Device (IED 2 ) and teleprotection link forming a protection scheme intended to protect specific circuits of the electrical power system, the method comprising: implementing monitoring actions on said remote Intelligent Electronic Device (IED 2 ) from a software running on said local Intelligent Electronic Device (IED 1 ), the data exchanged between the local Intelligent Electronic Device (IED 2 ) and the remote Intelligent Electronic Device (IED 2 ) during the running of the software being transmitted through the teleprotection link ; transferring, via the teleprotection link , a file containing test waveform sampled data to a memory of the remote Intelligent Electronic Device (IED 2 ); and either: a) performing a single-ended virtual test on the remote Intelligent Electronic Device (IED 2 ) to the remote relay, invoked from said software running on said local Intelligent Electronic Device (IED 1 ); or b) further loading the file containing test waveform sampled data into a memory of the local Intelligent Electronic Device (IED 1 ); using a precision time protocol, simultaneously applying a test on the local Intelligent Electronic Device (IED 1 ) to the local relay and on the remote Intelligent Electronic Device (IED 2 ) to the remote relay based on the test waveform sampled data; wherein said local Intelligent Electronic Device (IED 1 ) and said remote Intelligent Electronic Device (IED 2 ) are each configured to measure, protect, control, and monitor the electrical power system. implementing monitoring actions on said remote Intelligent Electronic Device (IED 2 ) from a software running on said local Intelligent Electronic Device (IED 1 ), the data exchanged between the local Intelligent Electronic Device (IED 2 ) and the remote Intelligent Electronic Device (IED 2 ) during the running of the software being transmitted through the teleprotection link ; transferring, via the teleprotection link , a file containing test waveform sampled data to a memory of the remote Intelligent Electronic Device (IED 2 ); and either: a) performing a single-ended virtual test on the remote Intelligent Electronic Device (IED 2 ) to the remote relay, invoked from said software running on said local Intelligent Electronic Device (IED 1 ); or b) further loading the file containing test waveform sampled data into a memory of the local Intelligent Electronic Device (IED 1 ); a) performing a single-ended virtual test on the remote Intelligent Electronic Device (IED 2 ) to the remote relay, invoked from said software running on said local Intelligent Electronic Device (IED 1 ); or b) further loading the file containing test waveform sampled data into a memory of the local Intelligent Electronic Device (IED 1 ); using a precision time protocol, simultaneously applying a test on the local Intelligent Electronic Device (IED 1 ) to the local relay and on the remote Intelligent Electronic Device (IED 2 ) to the remote relay based on the test waveform sampled data; wherein said local Intelligent Electronic Device (IED 1 ) and said remote Intelligent Electronic Device (IED 2 ) are each configured to measure, protect, control, and monitor the electrical power system. <EOS>