Patent ID: 9215143
Filing Date: 2015-12-15
Classification: H04L,H04M,H04W

Abstract:
1. A method in a network for indicating to a network component that a circuit switched (CS) call with a mobile device and a packet switched (PS) communication session originate from the same mobile device, the method comprising at the network: receiving a first International Mobile Equipment Identity (IMEI) originating from a mobile device having sent the first IMEI in an information element of a cellular telephony protocol message; receiving a Session Initiation Protocol (SIP) message to the network, the SIP message including a second IMEI in a format of a Unified Resource Name (URN) in an instance identifier (ID) contained within the SIP message; and determining that the CS call and the PS communication session originate from the mobile device when the first IMEI matches the second IMEI.