I recently started working for a small commercial datacenter. My expertise is in Cisco IPT, but this issue gets into an area I'm not very well versed in.
The question is, how would I architect my environment to allow two separate Call Managers (Business Editions), which we have co-located in our datacenter, to be able to utilize a single AS5400 Universal Gateway? We have 4 PRI circuits going into the AS5400 as of right now.
The solution is being sold with us providing the colocation and the termination of the customers PRI. However, our datacenter manager decided to forego purchasing a ISR router to do terminate the PRI into, in stead he wants to leverage our AS5400 to do the job.
On top of this, we'll have our own Call Manager installed shortly that will need to be able to utilize the AS5400 to gain access to the PSTN.
Keep in mind that neither Call Manager can be allowed to be aware of the state of the other one. These have to be completely sovereign installations and configurations.
My question is what's the best option here? MGCP doesn't seem suited to the task, so that (in my mind at least), leave configuring H.323 or SIP trunks. Does this seem appropriate, or is there some means to accomplish the same thing with MGCP (would I even want to if I could).
Originally we were only going to be using the AS5400 for our own Call Manager, so we were going to use MGCP.