In setting up the GS-Wave softphone there are two id entries: SIP User ID SIP Authentication ID I would have thought SIP User ID was the devicename , i.e. [name]. Then SIP Authentication ID was defaultuser. But not so. With [gs_5062](cell-phones) defaultuser=gs_62 and SIP User ID gs-5062 SIP Authentication ID gs-62 username mismatch, have <gs_5062>, digest has <gs_62> So I tried: [gs_62](cell-phones) defaultuser=gs_5062 Registration from '<sip:gs_5062 at way.dtdns.net>' failed for '10.10.11.95:48115' - Username/auth name mismatch So I commented out defaultuser: [gs_5062](cell-phones) ;defaultuser=gs_62 No joy: Registration from '<sip:gs_5062 at way.dtdns.net>' failed for '10.10.11.95:48125' - Username/auth name mismatch Then I took out blanked the SIP Authentication ID pn the phone. Same result. BUT if you set both the SIP User ID and SIP Authentication ID to the same value, and comment out defaultuser, it registers. Is this what's supposed to happen ?? sean