We are in the process of migrating to RingCentral for several sites. At one site I am trying to set up a line that will only be used to dial in to a paging system by users located physically at the same site. According to RC support, as soon as we connect hardware to a line (Cisco SPA122 in this case) a DID is required. The problem is that I dont want external calls to be able to reach the paging system. The only way I can see to get the setup I need, is to enable "block all calls" on the paging line, and then populate the approved numbers list with every number at that particular site (not many so not an issue).
Is this the best way to set this up? Is there really no way to generate an internal only "virtual extension" that we can point to the SPA122? Or to just block external access to the DID?
Follow up question, if this is indeed the correct path, will the approved users be able to dial the paging line using the direct extension? Or only via the full number?
Sorry if this is a question that has already been asked, I promise I searched the community before posting.