In the Push method,
The encoder should send a stream to a leg of your MCM server.
It will appear in the list of channels as a scanned channel (gray).
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Double click on it and in the Source tab in the Network field you should change RTMP-Push to your network adaptor.
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Note that this is based on a TCP protocol. If monitoring does not start, then the transmitting party will stop transmitting the data. It is a two-machine session. If one party/side does not receive approval from the other within a certain time (TIME-OUT), the stream ceases to exist.
** If you do not find the stream probably you have a communication problem.