diff --git a/modules/rhizo_base/manifests/init.pp b/modules/rhizo_base/manifests/init.pp
index 6392581..c9a054e 100644
--- a/modules/rhizo_base/manifests/init.pp
+++ b/modules/rhizo_base/manifests/init.pp
@@ -26,6 +26,7 @@ class rhizo_base {
   $advice_email    = hiera('rhizo::advice_email')
   $charge_scheme   = hiera('rhizo::charge_scheme', 'normal')
   $test_playback   = hiera('rhizo::test_playback', 'tone_stream://%(4000,250,440);loops=-1')
+  $sip_calling_url = hiera('rhizo::sip_calling_url', '')
 
   # database
   $pgsql_db   = hiera('rhizo::pgsql_db')
diff --git a/modules/rhizo_base/templates/config_values.py.erb b/modules/rhizo_base/templates/config_values.py.erb
index 259903f..13bcb8d 100644
--- a/modules/rhizo_base/templates/config_values.py.erb
+++ b/modules/rhizo_base/templates/config_values.py.erb
@@ -19,6 +19,7 @@ test_playback = '<%= @test_playback %>'
 mncc_codec = '<%= @mncc_codec %>'
 inter_codec = '<%= @inter_codec %>'
 upstream_codec = '<%= @upstream_codec %>'
+sip_calling_url = '<%= @sip_calling_url %>'
 
 # database
 pgsql_db = '<%= @pgsql_db %>'