VCM-DNS-Resolve

This switch allows SIP users to use the provider's domain to register with the device, provided that the device has a SIP line registered with this domain. The SIP client’s DNS request for this provider domain is answered by the device with the local IP address. All SIP messages from this SIP client thus go directly to the device and are processed by its VCM (REGISTER initiates the registration of the client and an INVITE is forwarded via the SIP line specified in the call-routing table).

This switch is intended to make it easier to transition from using SIP clients without VCM to using VCM. In this case, all there is to do is configure the LANCOM device. There were occasional complications due to the automatic translation of the provider domain to the device IP, so this behavior can be changed here.