Single-Site and Multi-Site VoIP Location

Single-Site VoIP Location

A company's organizational structure strongly determines the requirements for an IP-PBX. A
single site location only requires a stand-alone solution with one central IP-PBX server and
gateway. The IP-PBX hosts all subscriber data whereas the gateway connects the company
to the legacy PSTN or to other IP networks. An integration of the IP-PBX with an existing
standard PBX creates no problems for the IP-PBX hardware.

Single-Site VoIP Location

Multi-Site VoIP Location

Multi-site solutions have different requirements for a convergent infrastructure. Both, IP-PBX

and gateway have to support multi-site environments. This could lead to dedicated IP-PBX

servers and gateways at each location. All components are interconnected all the time to

constantly align server data and states as a common numbering plan and common phone

directory are used. For cost efficiency reasons, the IP-PBX servers route the call as long as

possible within the IP network and deliver the call to the PSTN as close as possible to its

final destination. Additionally, the IP gateways must support dialling-in from any PSTN

signaling point to any branch office and call delivery to the PSTN gateway according to a

least cost routing plan in order to save costs.

Multi-Site VoIP Location