Method for setting up an emergency call in a computer local area network, terminal and server for implementing the method

A gateway, comprising:

• a first connection for connecting to an analog telephone terminal or a digital synchronous telephone terminal;
• a second connection for connecting to an Internet type local area network providing a telephony service;
• and
• at least one processor operatively coupled with the first connection and the second connection to:
• when a telephone terminal sends a message requesting setting up of an emergency call:
• recognize that the message is requesting the setting up of an emergency call, and
• forward the message in broadcast mode in the local area network, adding to the message a virtual network identifier corresponding to a first virtual network and a broadcast mode indicator, the first virtual network including at least one emergency call server coupled with the Internet type local area network, and the first virtual network including no terminals participating in or requesting setup of non-emergency calls and the first virtual network having a priority higher than that of any virtual network to which is assigned a terminal that is requesting the setting up of a non-emergency call;
• add to any message coming from the terminal a virtual network identifier corresponding to the first virtual network during the duration of the emergency call;
• and
• forward to the terminal any message carrying an address corresponding to the terminal and carrying a virtual network identifier corresponding to a second virtual network and a unicast mode indicator, the second virtual network having a priority higher than that of any virtual network to which is assigned a terminal that is requesting the setting up of a non-emergency call.