CSIM START is a badly, if not undocumented Cisco IOS command that allows you to generate a voice call from a voice enabled router. It seems even if buggy, it could be really useful in situations where you are configuring or supporting configurations remotely and / or don't have live users to test configurations for you.
I have used it successfully with version 124-24.T3 with loop start analog POTS lines, but have seen demonstrations with older versions over PRI as well.
It seems that csim always returns a failed=1 code despite calls being made correctly.
I have found debug voip ccapi inout reflects the call generated by csim accurately.
A successful call looks like:
router#csim start 917167994818
csim: called number = 917167994818, loop count = 1 ping count = 0
csim err csimDisconnected recvd DISC cid(21)
csim: loop = 1, failed = 1
csim: call attempted = 1, setup failed = 1, tone failed = 0
A call to a number without a dial-peer match looks like:
router#csim start 917167994818
csim: called number = 089151, loop count = 1 ping count = 0
csim err:csim_do_test Error peer not found
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