Crowtalks,
If you view the 5000 in Classic View it looks very similar to that. There are obviously a lot of differences between the software version though, but for the most part they work the same and you should have many problems at all. If you do don't hesitate to post questions here as I was trained on Axxess Version 2.3 and I am sure there are others on here that have just as much experience on the Axxess platform.
Major Differences are:
No inherent IP choices and the CPU card will not have a network interface so you will need to have a serial connection to work on it and the correct adapter for the DB9.
Conference only allows for a total of 4 parties
There isn't a users section as DEE wasn't even thought of yet
As of 5.0 they were allowed to network the system together and 5.1 was an amalgam of 4.4 and 5.0.
They did have an external processor call that was the same as the newer Voice Processing Units (VPU) that run on Windows.
The VPU was a separate PC that was still integrated and programmed the same as the version you are used to now, except the Unified Messaging part.
No Calling Party or Emergency Calling Party Number under the station
Phantom ports didn't exist so you created phantom cards in phantom cabinets or you made the port with an MDPM (Modem Data Port Module) and then used the Single Line as the Phantom
I am sure there are more differences, but I can't think of any others right now, but the reality is that the software hasn't changed so much that it would be impossible to work on.
Thanks,
TE