Abstract: An emergency message handling system manages emergency SMS text messages sent by mobile stations. The system also includes an emergency handling platform comprising an SMS gateway server, an SMS application server, and an SMS-To TTY message converter. In response to an emergency SMS text message received via a mobile communication network, the emergency handling platform determines the location of the mobile station and identifies the Public Safety Answering Point (PSAP) assigned to cover the location of the mobile station. If the PSAP assigned is only TTY compatible, the text message is converted to TTY. A TTY selective router is configured to deliver each of converted emergency SMS text message in TTY format to the TTY messaging system of the TTY PSAP. However, if the PSAP assigned is IP network compatible, then the text message is delivered directly to the IP compatible PSAP without any TTY conversions.

Abstract: When a mobile device receives an incoming call from a telephone number: it identifies a number of digits associated with the telephone number and determines whether the number of digits exceeds a threshold. Upon determining that the number of digits exceeds the threshold, the incoming call is identified as an international call and the telephone number is identified as an international telephone number. The mobile device identifies a reference country from which the international call is originated and stores the international telephone number in association with the reference country in its memory.