Patent ID: 8767673
Filing Date: 2014-07-01
Classification: H04W

Abstract:
1. A system comprising: an element of a first network configured to provide circuit-switched services, an element of a second network configured to provide packet-switched services, a message relaying element, and at least one mobile station configured to communicate with the element of the first network and the element of the second network, wherein the message relaying element or the element of the second network lacks capability to support an interface for text-based message transfer between the element of the second network and the message relaying element, and the mobile station comprises a processor configured to: check, in response to a need to transmit at least one text-based message, if the mobile station is attached to the second network, attachment of the mobile station to the second network referring to formation of a mobility management context for the mobile station, transmit said at least one text-based message to the element of the second network in response to the mobile station being attached to the second network, and in response to a failure to transmit the at least one text-based message via the element of the second network if an error message is received from the second network, transmit the at least one text-based message to the element of the first network.