| 摘要 |
The present invention provides a system and method for reliably transferring Dual Tone Multiple Frequency (DTMF) signals originating at an MS through an IP based GSM network. In general, when an MS sends a DTMF request, it is processed in the IP network by a logical application module in an MSC, which, based on the disclosed processing, activates another logical application module in an appropriate gateway (for independent tone generation), and then the logical application module in the gateway directs the production of the DTMF signal in the destination network.
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