Patent ID: 9674049
Date: 2017-06-06
CPC Classifications: G06F,H04L,H04W

Claim:
1. A method of providing a remote access service by using a first device, comprising: receiving a session initiation protocol (SIP) identifier (ID) of a second device from a control device; generating a payload of an SIP packet comprising the SIP ID of the second device and address set information of the first device corresponding to candidate Internet protocol (IP) addresses to access the first device; receiving another SIP packet comprising address set information of the second device corresponding to the candidate IP addresses to access the second device corresponding to the SIP ID of the second device as a payload of the other SIP packet; extracting the payload comprising the address set information of the second device from the other SIP packet, wherein, in response to the second device being included in a network address translation (NAT)-based private network, the address set information of the second device comprises a reflexive transport address (TA), in response to the second device receiving a NAT traversing service from a traversal using relays around NAT (TURN) server, the address set information of the second device comprises a relaying TA, and in response to the second device not being included in the NAT-based private network, the address set information of the second device comprises a TA; and setting address information of the second device.