Dear All, I use Openser for test SIP Text Message from IP phone to IP phone. it's work perfect :) Look like only openser support this feature light now. Asterisk not support and Freeswitch fail also. (I use yealink ip phone). So now my customer want to relay SIP text Message to PSTN via SMSC Can someone tell me is posible to use openser SMS module send SIP text Message to SMSC ? Best Regards. Dome C.