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IP Office Product Description

IP Office 4.2

Page 158

Issue 18.b.- (08 July 2008)

Network Numbering Schemes

IP Office uses fully flexible network numbering options. Dialed digits can be manipulated to add or remove

digits, access codes etc. in order to fit into any numbering scheme. Two types of numbering schemes are

commonly deployed - 'Linked Numbering' and 'Node Numbering' schemes. 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 (< 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.

The following figures depict these two types of numbering schemes.

Linked Numbering Scheme

Node Numbering Scheme

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