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I have a customer with four locations with SV9100s that are all interconnected with IP-CCIS. They are looking to switch to SIP trunks at the main site but be able for the other three sites to access them.

Incoming isn't a problem as the DIDs will route via the F-Route tables to the proper extensions.

Outgoing though is the concern. I'm sure it can be done but want to confirm that if a user at site B dials the trunk access code, that it can access the SIP trunks on site A to make an outgoing call. The end goal is to have everybody using the SIP trunks, aside for 911 calls that will use a local analog trunk at each location.
If you are concerned I would order 1 and test it. It should work if all the networking is setup correctly.
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