public void SetProviderFields(SIPProvider sipProvider)
        {
            ProviderID            = sipProvider.ID;
            Owner                 = sipProvider.Owner;
            AdminMemberID         = sipProvider.AdminMemberID;
            ProviderName          = sipProvider.ProviderName;
            ProviderAuthUsername  = (!sipProvider.ProviderAuthUsername.IsNullOrBlank()) ? sipProvider.ProviderAuthUsername : sipProvider.ProviderUsername;
            ProviderPassword      = sipProvider.ProviderPassword;
            RegistrarServer       = sipProvider.GetRegistrar();
            RegistrarRealm        = (!sipProvider.RegisterRealm.IsNullOrBlank()) ? sipProvider.RegisterRealm : RegistrarServer.Host;
            ProviderOutboundProxy = sipProvider.ProviderOutboundProxy;

            if (sipProvider.RegisterEnabled)
            {
                BindingExpiry = (sipProvider.RegisterExpiry.HasValue) ? sipProvider.RegisterExpiry.Value : 0;
            }
            else
            {
                BindingExpiry = 0;
            }

            string bindingId = null;
            SIPURI binding   = (!BindingURI.IsNullOrBlank()) ? SIPURI.ParseSIPURIRelaxed(BindingURI) : null;

            if (binding != null && binding.Parameters.Has(REGAGENT_CONTACT_ID_KEY))
            {
                bindingId = binding.Parameters.Get(REGAGENT_CONTACT_ID_KEY);
            }

            if (!sipProvider.RegisterContact.IsNullOrBlank())
            {
                binding = SIPURI.ParseSIPURI(sipProvider.RegisterContact);
                if (!bindingId.IsNullOrBlank())
                {
                    binding.Parameters.Set(REGAGENT_CONTACT_ID_KEY, bindingId);
                }

                if (binding != null)
                {
                    BindingURI = binding.ToString();
                }
                else
                {
                    BindingURI    = null;
                    BindingExpiry = 0;
                }
            }
            else
            {
                // The register contact field on the SIP Provider is empty.
                // This condition needs to be trearted as the binding being disabled and it needs to be removed.
                BindingExpiry = 0;
            }
        }