Which media resource is primarily used for DTMF interworking?

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Multiple Choice

Which media resource is primarily used for DTMF interworking?

Explanation:
DTMF interworking requires translating how digits are carried when two ends use different DTMF signaling methods. The MTP, or Media Translation Processor, sits in the media path and performs this translation, converting DTMF between methods such as RFC2833 (RTP events), in-band tones, and SIP INFO. This lets tones or signals generated by one side be correctly understood by the other, even if their signaling method differs. While a MRGL is simply a resource-group that determines which media resources are used, and a SIP Proxy handles signaling rather than media, and a Media Gateway bridges networks but isn’t the dedicated DTMF translator in the call path, the MTP is the resource specifically designed for DTMF interworking.

DTMF interworking requires translating how digits are carried when two ends use different DTMF signaling methods. The MTP, or Media Translation Processor, sits in the media path and performs this translation, converting DTMF between methods such as RFC2833 (RTP events), in-band tones, and SIP INFO. This lets tones or signals generated by one side be correctly understood by the other, even if their signaling method differs. While a MRGL is simply a resource-group that determines which media resources are used, and a SIP Proxy handles signaling rather than media, and a Media Gateway bridges networks but isn’t the dedicated DTMF translator in the call path, the MTP is the resource specifically designed for DTMF interworking.

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