Boy you nailed this one, documentation for this product is weak and relying on this forum for real support is a joke. It's nice when people reply but there really is not much from the pbxnsip admin. The big advantage with this product over Asterisk was SLA when selling a key system replacement. But now Asterisk 1.4.5 supports SLA and is way more flexible than pbxnsip. Also when you pay for a 25 user license it should be 25 extensions, counting trunks and AA as licenses is wrong. Just my opinion!