1.Distributed remote extension networking (one system, remote extension registers and don’t need to insert external line in branch)

Multiple branches enterprise
Many extensions in headquarter, while less extensions in Branch
There is no external line to insert in branch
Branch connects headquarter system by remote extension to unified management: recording, IVR and call data in one server
Free call and free transfer between headquarter and branch.
2.Distributed networking for any systems (many systems, branch and headquarter system connect, but the branch and headquarter system are independent.)

Multiple branches enterprise
Relative same extensions in branch and headquarter
There has external line to insert in branch
Headquarter and branch have independent system separately, and connect through Internet
Free call and free transfer between headquarter and branch.
3.Distributed system inserts in different place (one system, remote register in branch, and branch has independent external line to insert)

Multiple branches enterprise
Many extensions in headquarter, while less extensions in Branch
There is no external line to access to branch
Branch connects headquarter system by VOIP Gateway
Free call and free transfer between headquarter and branch.