An electrical connector includes an insulative housing, a plurality of terminals retained in the insulative housing, a shell and a pair of strengthened members. The invention relates also to compositions including these compounds and methods of using the compounds. The information is transmitted by the first mobile communication device to the second mobile communication device in a form of a binary mask in an SDP body of a SIP INVITE message, a value of 1 indicating the operational modes which are supported by the first mobile communication device.