I have already trunked the 2 PBXs. The extensions range of the first one is 1xx and the second is 2xx. I can call them each other through the 1xx and 2xx number.
Follow this below example because my english description is not very good. I wanna take them all in one that means all of 1xx will become 12345678 and all of 2xx will become 87654321. So I can use the new number for the 2 pbxs to take an IVR or an annoucement or somethings like this.
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