We are developing a point-to-point wireless infrastructure to exchange data between two sites. We will need also to guarantee voice communication between the two sites and hence install two voice terminals on each site. VoIP seems the best choice. I was wondering if the CISCO IP SPA series devices allows to establish direct calls between two VOIP terminal installed on each side of this link (which shall be on the same LAN) without SIP or PBX. It seems that CISCO SPA112 allows for it but only for debug purpose. No information are found for the CISCO SPA 300 series. Does anyone know if such devices can be configured to allow direct (like in-office) voice call without internet access.
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