Make Calls between 2 Astersik server extension

I would like two now how can i make calls between 2 astersik server extensions?

In the first server i have an extension (100) and on the second one i have extension (1000) how can i make calls between them.

please do not make multiple posts, posting 3 times and in different forums doesnt mean that you will get answers quicker, in fact some people may not answer if they see you posting the same question so much…

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