Moshi Moshi is a VoIP Bot written in Python that uses SIP as VoIP Protocol, Text-to-speech engines for Output, and DTMF Tones for Input. It is part of a talk (“Sounds Like Botnet”) given at DEF CON 19 and BSidesLV 2011 on VoIPBotnets by Itzik Kotler and Iftach (Ian) Amit Amit Amit. The bot is written using Python 2.7+ and SIP SIMPLE Client.
Source: https://thehackernews.com/2011/08/moshi-moshi-voip-bot-written-in-python.html