Method of authenticating access to a wireless communication network and corresponding apparatus

An access point, the access point comprising:

• a wireless network interface configured to provide a wireless local area network;
• the wireless network interface being further configured to receive an authentication request for authenticating a device to access said wireless local area network, said authentication request comprising a Media Access Control address of said device;
• a telephone interface configured to receive at least one of an incoming call or short message service from a caller destined a telephone number of an Internet Protocol telephone connected to said telephone interface;
• said wireless network interface being further configured to send to said device an authentication response indicating authentication success when there exists a Media Access Control address—associated telephone number correspondence for said Media Access Control address of said device and a telephone number of said caller obtained from said incoming call or short message service, and further configured to send to said device an authentication response indicating an authentication failure when said correspondence does not exist.