Well I went in to see when I can order a new iPhone and I ended up seeing that ATT has ditched their Avaya Partner phones for these Cisco SIP phones. The 7861 is a larger sized SIP phone for use on Cisco Call Manager platforms or on hosted systems by Asterisk and Broadsoft. I am not quite sure if these phones at the store are running hosted or running Cisco Call Manager. I like the look of these phones….this set would be even better if the line keys were LCD readout and not paper Desi. This probably keeps the cost of the phone low, as I’ve seen it selling for as low as $130 online.