diff --git a/manifests/init.pp b/manifests/init.pp
index 6ab35a7..74d037d 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -23,6 +23,16 @@
 #    transport://user:pass@host1:port[,hostN:portN]/virtual_host
 #  Defaults to $::os_service_default
 #
+# [*rpc_response_timeout*]
+#  (Optional) Seconds to wait for a response from a call.
+#  Defaults to $::os_service_default
+#
+# [*control_exchange*]
+#   (Optional) The default exchange under which topics are scoped. May be
+#   overridden by an exchange name specified in the transport_url
+#   option.
+#   Defaults to $::os_service_default
+#
 # [*rabbit_use_ssl*]
 #  (Optional) Connect over SSL for rabbit
 #  Defaults to $::os_service_default
@@ -81,6 +91,8 @@ class magnum(
   $notification_driver   = $::os_service_default,
   $rpc_backend           = 'rabbit',
   $default_transport_url = $::os_service_default,
+  $rpc_response_timeout  = $::os_service_default,
+  $control_exchange      = $::os_service_default,
   $rabbit_use_ssl        = $::os_service_default,
   $kombu_ssl_ca_certs    = $::os_service_default,
   $kombu_ssl_certfile    = $::os_service_default,
@@ -136,7 +148,9 @@ class magnum(
   }
 
   oslo::messaging::default { 'magnum_config':
-    transport_url => $default_transport_url,
+    transport_url        => $default_transport_url,
+    rpc_response_timeout => $rpc_response_timeout,
+    control_exchange     => $control_exchange,
   }
 
   oslo::messaging::notifications { 'magnum_config':
diff --git a/releasenotes/notes/add_messaging_default_parameters-7a2e871359d23561.yaml b/releasenotes/notes/add_messaging_default_parameters-7a2e871359d23561.yaml
new file mode 100644
index 0000000..39d5e04
--- /dev/null
+++ b/releasenotes/notes/add_messaging_default_parameters-7a2e871359d23561.yaml
@@ -0,0 +1,7 @@
+---
+features:
+  - Add new parameter "control_exchange", the default exchange under
+    which topics are scoped. May be overridden by an exchange name
+    specified in the transport_url option.
+  - Add new parameter "rpc_response_timeout", seconds to wait for a
+    response from a call
diff --git a/spec/classes/magnum_init_spec.rb b/spec/classes/magnum_init_spec.rb
index 4ae28cc..9379af9 100644
--- a/spec/classes/magnum_init_spec.rb
+++ b/spec/classes/magnum_init_spec.rb
@@ -40,6 +40,8 @@ describe 'magnum' do
       it 'configures rabbit' do
         is_expected.to contain_magnum_config('DEFAULT/rpc_backend').with_value('rabbit')
         is_expected.to contain_magnum_config('DEFAULT/transport_url').with_value('<SERVICE DEFAULT>')
+        is_expected.to contain_magnum_config('DEFAULT/rpc_response_timeout').with_value('<SERVICE DEFAULT>')
+        is_expected.to contain_magnum_config('DEFAULT/control_exchange').with_value('<SERVICE DEFAULT>')
         is_expected.to contain_magnum_config('oslo_messaging_rabbit/rabbit_host').with_value('<SERVICE_DEFAULT>')
         is_expected.to contain_magnum_config('oslo_messaging_rabbit/rabbit_password').with_value('<SERVICE_DEFAULT>').with_secret(true)
         is_expected.to contain_magnum_config('oslo_messaging_rabbit/rabbit_port').with_value('<SERVICE_DEFAULT>')
@@ -55,14 +57,16 @@ describe 'magnum' do
 
     context 'with overridden parameters' do
       let :params do
-        { :package_ensure      => 'latest',
-          :notification_driver => 'messagingv1',
-          :transport_url       => 'rabbit://user:pass@host:1234/virt',
-          :rabbit_host         => '53.210.103.65',
-          :rabbit_port         => '1234',
-          :rabbit_userid       => 'me',
-          :rabbit_password     => 'secrete',
-          :rabbit_virtual_host => 'vhost',
+        { :package_ensure       => 'latest',
+          :notification_driver  => 'messagingv1',
+          :transport_url        => 'rabbit://user:pass@host:1234/virt',
+          :rpc_response_timeout => '120',
+          :control_exchange     => 'magnum',
+          :rabbit_host          => '53.210.103.65',
+          :rabbit_port          => '1234',
+          :rabbit_userid        => 'me',
+          :rabbit_password      => 'secrete',
+          :rabbit_virtual_host  => 'vhost',
         }
       end
 
@@ -76,6 +80,8 @@ describe 'magnum' do
 
       it 'configures rabbit' do
         is_expected.to contain_magnum_config('DEFAULT/transport_url').with_value('rabbit://user:pass@host:1234/virt')
+        is_expected.to contain_magnum_config('DEFAULT/rpc_response_timeout').with_value('120')
+        is_expected.to contain_magnum_config('DEFAULT/control_exchange').with_value('magnum')
         is_expected.to contain_magnum_config('oslo_messaging_rabbit/rabbit_host').with_value('53.210.103.65')
         is_expected.to contain_magnum_config('oslo_messaging_rabbit/rabbit_password').with_value('secrete').with_secret(true)
         is_expected.to contain_magnum_config('oslo_messaging_rabbit/rabbit_port').with_value('1234')