Patent ID: 9713112
Date: 2017-07-18
CPC Classifications: H04L,H04W

Claim:
1. A method of operating a session border controller (SBC), the method comprising: receiving, at the SBC, a first registration request directed to a registrar from a first user equipment device; assigning, by the SBC, a first registration instance identifier to the first registration request; storing, in memory, information relating to the first registration request including the assigned first registration instance identifier; sending, from the SBC, a first message to said first user equipment device in response to the first registration request, said first message including said first registration instance identifier, receiving, by the SBC, a second message; determining, by the SBC, whether the second message corresponds to the first registration request based on information included in the second message; and wherein determining whether the second message corresponds to the first registration request includes determining that said second message corresponds to the first registration request when information included in the second message includes said first registration instance identifier.