I'm having a few issues where the freeswitch 1.6 is not registering with the callmanager 8. [ERR] sofia_reg c:1765 CM8 Registration Failed with status DNS Error [503]. <include> <gateway name="CM8"> <param name="username" value="xxxx"/> <param name="password" value="xxxx"/> <param name="realm" value="CM8.localhost.local"/> </gateway> </include> I added the CM8.localhost.local to the hosts file as the CM is on the same network and doesn't need a DNS entry. Can I replace the value in the realm field with an IP Address? I did check the box MTP required on the callmanager. I've reloaded the xml file using the sofia profile external ... Thanks so much, Mitch