How to use sip servers as router

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streaming

routing

Hi I am on a project which includes different nodes one node is source of the stream and another sink of that stream and there are some intermediate nodes between them.
i have these assumptions:
1. each node can ping the neighbor one
2. but there is no guarantee that this is possible for other nodes.

i am thinking about putting SIP servers as router but i don't know how should i do this.

thanks for your attention