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