diff --git a/reactor-plc/plc.lua b/reactor-plc/plc.lua
index a88a119..3aa5b01 100644
--- a/reactor-plc/plc.lua
+++ b/reactor-plc/plc.lua
@@ -559,16 +559,16 @@ function plc.comms(version, nic, reactor, rps, conn_watchdog)
         max_burn_rate = nil
     }
 
-    if nic.isWireless() then
+    if config.WirelessModem then
         comms.set_trusted_range(config.TrustedRange)
     end
 
-    -- PRIVATE FUNCTIONS --
-
     -- configure network channels
     nic.closeAll()
     nic.open(config.PLC_Channel)
 
+    --#region PRIVATE FUNCTIONS --
+
     -- send an RPLC packet
     ---@param msg_type RPLC_TYPE
     ---@param msg table
@@ -825,7 +825,9 @@ function plc.comms(version, nic, reactor, rps, conn_watchdog)
         end
     end
 
-    -- PUBLIC FUNCTIONS --
+    --#endregion
+
+    --#region PUBLIC FUNCTIONS --
 
     ---@class plc_comms
     local public = {}
@@ -835,10 +837,6 @@ function plc.comms(version, nic, reactor, rps, conn_watchdog)
     function public.switch_nic(_nic)
         nic.closeAll()
 
-        if _nic.isWireless() then
-            comms.set_trusted_range(config.TrustedRange)
-        end
-
         -- configure receive channels
         _nic.closeAll()
         _nic.open(config.PLC_Channel)
@@ -1123,6 +1121,8 @@ function plc.comms(version, nic, reactor, rps, conn_watchdog)
     ---@nodiscard
     function public.is_linked() return self.linked end
 
+    --#endregion
+
     return public
 end
 
diff --git a/rtu/rtu.lua b/rtu/rtu.lua
index 9901a86..a4c9657 100644
--- a/rtu/rtu.lua
+++ b/rtu/rtu.lua
@@ -306,7 +306,15 @@ function rtu.comms(version, nic, conn_watchdog)
 
     local insert = table.insert
 
-    -- PRIVATE FUNCTIONS --
+    if config.WirelessModem then
+        comms.set_trusted_range(config.TrustedRange)
+    end
+
+    -- configure network channels
+    nic.closeAll()
+    nic.open(config.RTU_Channel)
+
+    --#region PRIVATE FUNCTIONS --
 
     -- send a scada management packet
     ---@param msg_type MGMT_TYPE
@@ -347,7 +355,9 @@ function rtu.comms(version, nic, conn_watchdog)
         return advertisement
     end
 
-    -- PUBLIC FUNCTIONS --
+    --#endregion
+
+    --#region PUBLIC FUNCTIONS --
 
     ---@class rtu_comms
     local public = {}
@@ -357,10 +367,6 @@ function rtu.comms(version, nic, conn_watchdog)
     function public.switch_nic(_nic)
         nic.closeAll()
 
-        if _nic.isWireless() then
-            comms.set_trusted_range(config.TrustedRange)
-        end
-
         -- configure receive channels
         _nic.closeAll()
         _nic.open(config.RTU_Channel)
@@ -617,6 +623,8 @@ function rtu.comms(version, nic, conn_watchdog)
         end
     end
 
+    --#endregion
+
     return public
 end
 
diff --git a/supervisor/supervisor.lua b/supervisor/supervisor.lua
index 3c5fd51..3778f3a 100644
--- a/supervisor/supervisor.lua
+++ b/supervisor/supervisor.lua
@@ -164,12 +164,14 @@ function supervisor.comms(_version, fp_ok, facility)
         last_est_acks = {}  ---@type ESTABLISH_ACK[]
     }
 
-    comms.set_trusted_range(config.TrustedRange)
+    if config.WirelessModem then
+        comms.set_trusted_range(config.TrustedRange)
+    end
 
     -- pass system data and objects to svsessions
     svsessions.init(fp_ok, config, facility)
 
-    -- PRIVATE FUNCTIONS --
+    --#region PRIVATE FUNCTIONS --
 
     -- send an establish request response
     ---@param nic nic
@@ -376,7 +378,9 @@ function supervisor.comms(_version, fp_ok, facility)
 
     --#endregion
 
-    -- PUBLIC FUNCTIONS --
+    --#endregion
+
+    --#region PUBLIC FUNCTIONS --
 
     ---@class superv_comms
     local public = {}
@@ -601,6 +605,8 @@ function supervisor.comms(_version, fp_ok, facility)
         end
     end
 
+    --#endregion
+
     return public
 end