[cisco-voip] inter cluster/system communications questions

[Lelio Fulgenzi]

We're pretty much a one cluster shop here with a legacy PBX for areas that do not have network connectivity. We've dabled with intercluster trunks into our test server without any problems, but I'm looking to develop a 'design guide' of sorts for any future inter-system communications that we may eventually look at, most notably, a beta cluster we are setting up.

I know that there is a general rule of thumb that says you should not allow a system to access route patterns that would route a call back to itself, but I'm wondering about some other issues:
  a.. How to grant/inherit trust from one system to another, both internal where the trust is assumed and external, where the trust is, well, not always there.
  b.. How to design the network, i.e. fully meshed systems or piggy-backing?
  c.. How to design route pattern groups, i.e. based on where the source can go or based on where the destination is?
While I do appreaciate any links, I would like to be able to talk to someone who's worked with intersystem design.

Hope someone out there can help....

Lelio

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Lelio Fulgenzi, B.A.
Network Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)
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