diff --git a/bundles/org.openhab.binding.tr064/src/main/java/org/openhab/binding/tr064/internal/soap/SOAPValueConverter.java b/bundles/org.openhab.binding.tr064/src/main/java/org/openhab/binding/tr064/internal/soap/SOAPValueConverter.java
index e175b22273d05..788bf20d785a6 100644
--- a/bundles/org.openhab.binding.tr064/src/main/java/org/openhab/binding/tr064/internal/soap/SOAPValueConverter.java
+++ b/bundles/org.openhab.binding.tr064/src/main/java/org/openhab/binding/tr064/internal/soap/SOAPValueConverter.java
@@ -38,6 +38,7 @@
 import org.openhab.core.library.types.OnOffType;
 import org.openhab.core.library.types.QuantityType;
 import org.openhab.core.library.types.StringType;
+import org.openhab.core.library.unit.Units;
 import org.openhab.core.types.Command;
 import org.openhab.core.types.State;
 import org.openhab.core.types.UnDefType;
@@ -200,6 +201,20 @@ private State processMacSignalStrength(State state, Tr064ChannelConfig channelCo
         return mappedSignalStrength;
     }
 
+    /**
+     * post processor for decibel values (which are served as deca decibel)
+     *
+     * @param state the channel value in deca decibel
+     * @param channelConfig channel config of the channel
+     * @return the state converted to decibel
+     */
+    @SuppressWarnings("unused")
+    private State processDecaDecibel(State state, Tr064ChannelConfig channelConfig) {
+        Float value = state.as(DecimalType.class).floatValue() / 10;
+
+        return new QuantityType(value, Units.DECIBEL);
+    }
+
     /**
      * post processor for answering machine new messages channel
      *
diff --git a/bundles/org.openhab.binding.tr064/src/main/resources/channels.xml b/bundles/org.openhab.binding.tr064/src/main/resources/channels.xml
index afccf5454851c..489391c7543d6 100644
--- a/bundles/org.openhab.binding.tr064/src/main/resources/channels.xml
+++ b/bundles/org.openhab.binding.tr064/src/main/resources/channels.xml
@@ -284,25 +284,25 @@
 		<item type="Number:Dimensionless" unit="dB" statePattern="%.1f dB"/>
 		<service deviceType="urn:dslforum-org:device:WANDevice:1"
 			serviceId="urn:WANDSLIfConfig-com:serviceId:WANDSLInterfaceConfig1"/>
-		<getAction name="GetInfo" argument="NewDownstreamNoiseMargin"/>
+		<getAction name="GetInfo" argument="NewDownstreamNoiseMargin" postProcessor="processDecaDecibel"/>
 	</channel>
 	<channel name="dslUpstreamNoiseMargin" label="DSL Upstream Noise Margin">
 		<item type="Number:Dimensionless" unit="dB" statePattern="%.1f dB"/>
 		<service deviceType="urn:dslforum-org:device:WANDevice:1"
 			serviceId="urn:WANDSLIfConfig-com:serviceId:WANDSLInterfaceConfig1"/>
-		<getAction name="GetInfo" argument="NewUpstreamNoiseMargin"/>
+		<getAction name="GetInfo" argument="NewUpstreamNoiseMargin" postProcessor="processDecaDecibel"/>
 	</channel>
 	<channel name="dslDownstreamAttenuation" label="DSL Downstream Attenuation">
 		<item type="Number:Dimensionless" unit="dB" statePattern="%.1f dB"/>
 		<service deviceType="urn:dslforum-org:device:WANDevice:1"
 			serviceId="urn:WANDSLIfConfig-com:serviceId:WANDSLInterfaceConfig1"/>
-		<getAction name="GetInfo" argument="NewDownstreamAttenuation"/>
+		<getAction name="GetInfo" argument="NewDownstreamAttenuation" postProcessor="processDecaDecibel"/>
 	</channel>
 	<channel name="dslUpstreamAttenuation" label="DSL Upstream Attenuation">
 		<item type="Number:Dimensionless" unit="dB" statePattern="%.1f dB"/>
 		<service deviceType="urn:dslforum-org:device:WANDevice:1"
 			serviceId="urn:WANDSLIfConfig-com:serviceId:WANDSLInterfaceConfig1"/>
-		<getAction name="GetInfo" argument="NewUpstreamAttenuation"/>
+		<getAction name="GetInfo" argument="NewUpstreamAttenuation" postProcessor="processDecaDecibel"/>
 	</channel>
 	<channel name="dslFECErrors" label="DSL FEC Errors">
 		<item type="Number:Dimensionless"/>