Ours is a new Utility, Power company. Our company acquired several functioning power companies in 8 countries around the world. These companies already have their own in-house PABX systems, make and model no. of these PABXs varies from country to country. Our headquater at Oslo uses its own PABX system. In order to reduce telephone expentiture we are now considering linking the PABXs of our daughter companies located at different country over Internet (IP trunking), we would like keep the internal calls internal (within the company network). We have an MPLS 2/2 mbps WAN connecting all our office around the globe.
We do not have the resource to carry out R&D on PABX system, we would like to know if a readymade solution/service is available.
Thanks in Advance,
IT Handy Man