One of the most popular help requests of owners of the SPA series Cisco/Linksys VoIP adapters is how to configure two of the devices in separate locations to create a virtual hotline.
The idea is that when a phone connected to one of the devices is lifted off it’s hook, a call is automatically made to the other SPA device, ringing the phone attached to it.
The topic comes up regularly on the Voxilla Forum, and it did so again in the last few days. Senior forum author hwittenb, as ususal, does an excellent job of outlining the different “hotline” methods available, complete with full configuration files that are easy to crib from.
Check out the growing thread at http://forum.voxilla.com/cisco-linksys-sipura-voip-support-forum/hot-line-between-two-spa3102-44531.html.