I have 2 spa525G2 phones configured on Elastix. Everything is setup and working correctly including trunks, inbound routes and outbound routes. I have 4 companies that have their own extensions with unique DID's. I have it setup so each phone has a line key that corresponds with each company. This works great for one phone. If I have both phones plugged in, only one will receive the calls.
I would prefer to have only one extension per company DID, but I'm afraid I might need to configure 2 extensions per company, then setup a unique extension for each company DID in each phone like this...
Company ABC -> Phone#1 (extension 250)
Company ABC -> Phone#2 (extension 251)
I would prefer...
Company ABC -> Phone#1 (extension 250) -> Phone#2 (extension 250)
The spa525G2 phones have a setting called "Share Line", but I cannot find any information on exactly what scenarios it's used in and I haven't been able to get it to work yet. Is this the solution?
Is my preferred method possible and if so, can you help direct me to the correct configuration?