We have been using 3CX for some time and are considering becomming reseller partners - great product. We have been using Cisco 7940 and 7960 phones, and they work fine. The one element that is missing is a cordless phone that can access the 3CX server. Looks like the Cisco 7921 would fill the need, but everything we have researched has yet to turn up a SIP firmware version for this - only SCCP. Does anyone know definitively whether this phone can be made to work with 3CX? Thanks.