| 摘要 |
A method for use in a dual mode wireless communication system supporting at least a first modulation method and a second modulation method, wherein the first and second modulation methods are used on different RF channels, wherein a wireless transmitter is capable of supporting both modulation methods, and wherein it is preferred that emergency 911 calls generally take place with the first modulation method, comprising the steps of: when the wireless transmitter is currently using the second modulation method and attempts to originate a call to 911, causing the wireless transmitter automatically or switch to the first modulation method; and originating the call to 911 using the first modulation method on one of the set of RF channels prescribed for use in the first modulation method. |
