If you can not establish the connection between 2N® Xapi Server and 2N® VoiceBlue Next then do adjustments of configuration file omegasrv.ini.
This file is located in C:\UsersUSER_NAME\AppData\Roaming\2N TELEKOMUNIKACE\XAPI Server\omegasrv.ini (Windows Vista and 7) or in Xapi Server installation directory (Windows XP).
Here you can find a section with gateway configuration [SMS-EGX] where X is representing index of gateway in Xapi Server SMS module settings.
Find line with IgnoreCR and change it to IgnoreCR=1
Save the file and restart 2N® Xapi Server