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Similar to the FMA device NocTel uses, the OBI110 - an FXO VoIP adapter peripheral - receives calls from NocTel VoIP handsets to then call into the connected legacy intercom/paging system on its Line port. At this high level view of the integration, all that is modified is how the paging/intercom system is reached - no modification of wiring, dial codes, etc. occurs. Formerly, the intercom/paging system would be integrated with a POTS or similar phone system and various vendors like NEC have models of phones that feature an intercom button that calls directly into the intercom/paging system. This is the same idea with using the OBI110 for VoIP integration. The following should be the only differences reaching and operating your legacy intercom/paging system after successful installation and configuration of the OBI110 or similar device:
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