Hi and thank you again.
I have testet thet MPS Service over several OfficeServPBX that are connected together. It is working find, I understand the concept - id does absolutely make sence.

BUT: what about mobile SIP clients? They will never be able to reach all IP Phones through the system. That would work only if every single IP/SIP Phone in the system is reachable from outside and thats impossible.

So whats the solution in this case?

I mean: if your are working with MPS with several OfficeServPBX that are in the same network and every single IP phone can reach another that it will perfektly. But as soon as you have external SIP Phones thous will never be able to reach al the IP phone ind the system.

It would be perfekt if there would be a setting to excluse MPS service only for certain SIP Phones but id did not find a setting like this.

Thank you for your help

Jonas