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.