Correct Calling Card: 140 274 8098
Card Number Received: 140 2744 88098

Observe:

Digit 4: End RTP Packet Sequence Number 1893 arrives first than RTP Event Packet Sequence Number 1892.

Digit 8: End RTP Packet Sequence Number 1907 arrives first than RTP Event Packet Sequence Number 1906.

This way an isolated DTMF Event between two End Events causes a second digit to be recognized for the same original one.

Thank you