The invention relates to the establishment, by a communication management platform, of a communication from a first communication device (DC1) intended for a second communication device (DC2). If the platform sends (ST6a) a message to the first device that contains a call identifier (IADn) dedicated to the communication to be established, it intercepts (ST7a-ST9a) a call from the first device to the dedicated call identifier, then routes (ST10a) said call to the main call identifier of the second device, by using a secondary call identifier (IAm) of the first device that the platform has previously assigned thereto. If the platform sends (ST4b) a message to the first device indicating the absence of a dedicated call identifier, the first device triggers a call to the main identifier of the second device, by using the main call identifier (IAP1) of the first device.
