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
First I have to thank your for sharing your expertised idea.
It is true that for 25 IP Phones CCME is enough though. But this number will increase to 400 in near future.
That is the reason we opted CUCM-BE for future proof. I am not sure how to connect AYAYAS800 (where PSTN link is terminated and some analog phones are connected) with CUCM-BE appliance. I am sure AYAYA is having IP card installed ready for usage.
On the CUCM, you configure the PBX as a a SIP or H.323 GW.
On the PBX, you need help from thier technicians.
Since often time they don't want or are unable to help, it may be better to install a router with two PRI ports, one goes to PSTN the other to PBX. This way you do not need to configure anything on the PBX.
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Thanks again. Yes I will get the assistance from PBX technicians. Keeping this assurance, and if i connect PBX ethernet card to CUCM Ethernet card using a UTP cable, will the solution can be achieved. (I hope SIP / H.323 tunnel has to be configured)
1. How many concurrent calls I can dial from the IP phones behind CUCM to Analog Phones behind PBX?
So, based on your replies i conclude that AYAVA EPBX with IP card can be directly connected to CUCM-BE using a UTP cable. Thus we will be able to make call between analog phones connected to AYAYA EPBX & IP Phones connected with CUCM-BE and also make outgoing / incoming PSTN call to and from IP phones connected in CUCM-BE.
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