I setup a lab to test to see if I could make a call through a CUCM 10.5 to another 10.5 with two Acme SBC using SIP and PKI, far I have a trunk made but the CUCM wont sink with the Acme, or I have figured the sip trunk wrong in the CUCM or I am missing something simple. How everything looks is as follow.
CUCM>SIP>Acme SBC>Acme SBC>CUCM
why I'm doing this lab is to see if our Acme SBC can do sip to CUCM and not have to buy CUBES to replace them.