IP Office provides flexible network numbering options. The system can manipulate dialed digits adding or removing digits and access codes to fit into any numbering scheme. Two types of numbering schemes are commonly deployed: linked numbering and node numbering.
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In linked numbering schemes each site within the network has a unique range of extension numbers and users simply dial the extension number of the called party. Often, linked numbering schemes are used in very small networks (less than 5 sites) with less than 500 extensions.
With node numbering schemes, each site is given a node ID and this is prefixed by the user when dialing extensions at other sites. In this way extension numbers can be replicated across sites while still appearing unique across the network. Node numbering schemes are common in larger networks.
Linked numbering schemes and node numbering schemes are sometimes both used within the same network with node numbering used at the large offices and linked numbering employed at clusters of satellite offices.
