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Summary

This chapter has discussed VoIP network application configurations and VoIP network components. We examined simple home-office configurations aimed at reducing long-distance telephone costs. These can be quite cost effective when many long-distance and international calls are placed. Otherwise the capital recovery may occur over an extended time period. We also looked at small-office VoIP configurations. They provide a centralized telephone system for an enterprise with many remotely located personnel. With VoIP telephony all VoIP phones attach to a central VoIP PBX as though they were located in a single facility. This has special appeal for call center operations. It may also compete with CENTREX services from a functional and, perhaps in the longer term, a cost standpoint.

The second part of the chapter examined the functions and standards that are found in VoIP PBXs and other VoIP network components. The purpose of each specification in the VoIP component was briefly identified. The goal is to give a sense of what is being indicated in VoIP product literature by these standards. Because VoIP products conform to standards does not mean that they effectively interoperate. At this time the best strategy is to use the VoIP components from a single vendor to implement VoIP telephony in a SOHO LAN.


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