I need your help to understand how to connect / interface CUCM-Business Edition with AYAYA-S800 EPBX where PSTN link is terminated.
I understand that CUCM-Business edition appliance have Ethernet Interface (RJ45) and AYAYA-S800 EPBX is also have IP card.
Shall I directly connect CUCM with EPBX using a UTP cable. The idea is, I have 100 analog Phones and CUCM will be having 25 IP phones. These should talk to each other and make outgoing calls using PSTN connected in AYAYA EPBX
Thanks in advance,