diff --git a/xos/models/venb.xproto b/xos/models/venb.xproto
index e021cc7..f40ce7e 100644
--- a/xos/models/venb.xproto
+++ b/xos/models/venb.xproto
@@ -5,6 +5,8 @@
     option verbose_name = "Virtual eNodeB Service";
     required string login_user = 1 [help_text = "vENB VM login user", default = "cfguser", max_length = 32, content_type = "stripped", null = False, db_index = False, blank = False];
     required string login_password = 2 [help_text = "vENB VM login password", default = "cfguser", max_length = 32, content_type = "stripped", null = False, db_index = False, blank = False];
+    required string tas_ip = 3 [help_text = "TAS IP address", default = "103.0.0.100", max_length = 32, null = False, db_index = False, blank = False];
+    required string ntp_ip = 4 [help_text = "NTP server IP address", default = "193.0.0.222", max_length = 32, null = False, db_index = False, blank = False];
 }
 
 message VENBServiceInstance (TenantWithContainer){
diff --git a/xos/synchronizer/steps/sync_venbserviceinstance.py b/xos/synchronizer/steps/sync_venbserviceinstance.py
index 2e30ecd..19ff9d5 100644
--- a/xos/synchronizer/steps/sync_venbserviceinstance.py
+++ b/xos/synchronizer/steps/sync_venbserviceinstance.py
@@ -53,6 +53,8 @@
         service = self.get_service(o)
         fields['login_user'] = service.login_user
         fields['login_password'] = service.login_password
+        fields['tas_ip'] = service.tas_ip
+        fields['ntp_ip'] = service.ntp_ip
         return fields
 
     def get_ip_address(self, network_name, service_instance, parameter):
diff --git a/xos/synchronizer/steps/venbserviceinstance_playbook.yaml b/xos/synchronizer/steps/venbserviceinstance_playbook.yaml
index 298d1ad..1cbd67f 100644
--- a/xos/synchronizer/steps/venbserviceinstance_playbook.yaml
+++ b/xos/synchronizer/steps/venbserviceinstance_playbook.yaml
@@ -22,8 +22,8 @@
     - ts_mask: "255.255.255.0"
     - ts_gateway: "103.0.0.254"
     - ts_host_name: "{{ instance_name }}"
-    - tas_ip: "103.0.0.100"
-    - ntp_ip: "193.0.0.222"
+    - tas_ip: "{{ tas_ip }}"
+    - ntp_ip: "{{ ntp_ip }}"
     - password: "{{ login_password }}"
   roles:
     - ts_config