diff --git a/docs/sections/guides/infra_guides/oom_base_optional_addons.rst b/docs/sections/guides/infra_guides/oom_base_optional_addons.rst
index b55ed0e..c98a388 100644
--- a/docs/sections/guides/infra_guides/oom_base_optional_addons.rst
+++ b/docs/sections/guides/infra_guides/oom_base_optional_addons.rst
@@ -127,7 +127,7 @@
 
     > kubectl label namespace istio-ingress istio-injection=enabled
 
-- To expose additional ports besides HTTP/S (e.g. for external Kafka access)
+- To expose additional ports besides HTTP/S (e.g. for external Kafka access, SDNC-callhome)
   create an override file (e.g. istio-ingress.yaml)
 
     .. collapse:: istio-ingress.yaml
diff --git a/docs/sections/resources/yaml/istio-ingress.yaml b/docs/sections/resources/yaml/istio-ingress.yaml
index 5f000d3..ae215c1 100644
--- a/docs/sections/resources/yaml/istio-ingress.yaml
+++ b/docs/sections/resources/yaml/istio-ingress.yaml
@@ -29,4 +29,8 @@
   - name: kafka-2
     port: 9002
     targetPort: 9002
+    protocol: TCP
+  - name: sdnc-callhome
+    port: 4334
+    targetPort: 4334
     protocol: TCP
\ No newline at end of file