diff --git a/resources/templates/provision/cisco/spa122/{$mac}.xml b/resources/templates/provision/cisco/spa122/{$mac}.xml
index bdf2f87437..70f2dc39d4 100644
--- a/resources/templates/provision/cisco/spa122/{$mac}.xml
+++ b/resources/templates/provision/cisco/spa122/{$mac}.xml
@@ -102,7 +102,7 @@
 <Retry_Reg_RSC></Retry_Reg_RSC>
 <RTP_Port_Min>16384</RTP_Port_Min>
 <RTP_Port_Max>16482</RTP_Port_Max>
-<RTP_Packet_Size>0.030</RTP_Packet_Size>
+<RTP_Packet_Size>0.020</RTP_Packet_Size>
 <Max_RTP_ICMP_Err>0</Max_RTP_ICMP_Err>
 <RTCP_Tx_Interval>0</RTCP_Tx_Interval>
 <No_UDP_Checksum>No</No_UDP_Checksum>
diff --git a/resources/templates/provision/cisco/spa301/{$mac}.xml b/resources/templates/provision/cisco/spa301/{$mac}.xml
index 42b46eb4df..0ac0e421a0 100644
--- a/resources/templates/provision/cisco/spa301/{$mac}.xml
+++ b/resources/templates/provision/cisco/spa301/{$mac}.xml
@@ -101,7 +101,7 @@
 	<!-- SIP/RTP_Parameters -->
   <RTP_Port_Min group="SIP/RTP_Parameters">16384</RTP_Port_Min> 
   <RTP_Port_Max group="SIP/RTP_Parameters">16538</RTP_Port_Max> 
-  <RTP_Packet_Size group="SIP/RTP_Parameters">0.030</RTP_Packet_Size> 
+  <RTP_Packet_Size group="SIP/RTP_Parameters">0.020</RTP_Packet_Size> 
   <Max_RTP_ICMP_Err group="SIP/RTP_Parameters">0</Max_RTP_ICMP_Err> 
   <RTCP_Tx_Interval group="SIP/RTP_Parameters">0</RTCP_Tx_Interval> 
   <No_UDP_Checksum group="SIP/RTP_Parameters">No</No_UDP_Checksum> 
diff --git a/resources/templates/provision/cisco/spa501g/{$mac}.xml b/resources/templates/provision/cisco/spa501g/{$mac}.xml
index f3da9be064..1093989110 100644
--- a/resources/templates/provision/cisco/spa501g/{$mac}.xml
+++ b/resources/templates/provision/cisco/spa501g/{$mac}.xml
@@ -106,7 +106,7 @@
 <!-- SIP/RTP_Parameters -->
   <RTP_Port_Min group="SIP/RTP_Parameters">16384</RTP_Port_Min> 
   <RTP_Port_Max group="SIP/RTP_Parameters">16538</RTP_Port_Max> 
-  <RTP_Packet_Size group="SIP/RTP_Parameters">0.030</RTP_Packet_Size> 
+  <RTP_Packet_Size group="SIP/RTP_Parameters">0.020</RTP_Packet_Size> 
   <Max_RTP_ICMP_Err group="SIP/RTP_Parameters">0</Max_RTP_ICMP_Err> 
   <RTCP_Tx_Interval group="SIP/RTP_Parameters">0</RTCP_Tx_Interval> 
   <No_UDP_Checksum group="SIP/RTP_Parameters">No</No_UDP_Checksum> 
diff --git a/resources/templates/provision/cisco/spa502g/{$mac}.xml b/resources/templates/provision/cisco/spa502g/{$mac}.xml
index ccb042ff20..dc034ae53c 100644
--- a/resources/templates/provision/cisco/spa502g/{$mac}.xml
+++ b/resources/templates/provision/cisco/spa502g/{$mac}.xml
@@ -106,7 +106,7 @@
 	<!-- SIP/RTP_Parameters -->
   <RTP_Port_Min group="SIP/RTP_Parameters">16384</RTP_Port_Min> 
   <RTP_Port_Max group="SIP/RTP_Parameters">16538</RTP_Port_Max> 
-  <RTP_Packet_Size group="SIP/RTP_Parameters">0.030</RTP_Packet_Size> 
+  <RTP_Packet_Size group="SIP/RTP_Parameters">0.020</RTP_Packet_Size> 
   <Max_RTP_ICMP_Err group="SIP/RTP_Parameters">0</Max_RTP_ICMP_Err> 
   <RTCP_Tx_Interval group="SIP/RTP_Parameters">0</RTCP_Tx_Interval> 
   <No_UDP_Checksum group="SIP/RTP_Parameters">No</No_UDP_Checksum> 
diff --git a/resources/templates/provision/cisco/spa504g/{$mac}.xml b/resources/templates/provision/cisco/spa504g/{$mac}.xml
index 4462416ae2..f8389d2ef9 100644
--- a/resources/templates/provision/cisco/spa504g/{$mac}.xml
+++ b/resources/templates/provision/cisco/spa504g/{$mac}.xml
@@ -63,7 +63,7 @@
 <Retry_Reg_RSC group="SIP/Response_Status_Code_Handling"/>
 <RTP_Port_Min group="SIP/RTP_Parameters">16384</RTP_Port_Min>
 <RTP_Port_Max group="SIP/RTP_Parameters">16538</RTP_Port_Max>
-<RTP_Packet_Size group="SIP/RTP_Parameters">0.030</RTP_Packet_Size>
+<RTP_Packet_Size group="SIP/RTP_Parameters">0.020</RTP_Packet_Size>
 <Max_RTP_ICMP_Err group="SIP/RTP_Parameters">0</Max_RTP_ICMP_Err>
 <RTCP_Tx_Interval group="SIP/RTP_Parameters">0</RTCP_Tx_Interval>
 <No_UDP_Checksum group="SIP/RTP_Parameters">No</No_UDP_Checksum>
diff --git a/resources/templates/provision/cisco/spa509g/{$mac}.xml b/resources/templates/provision/cisco/spa509g/{$mac}.xml
index c6038a7cd2..22edf39620 100644
--- a/resources/templates/provision/cisco/spa509g/{$mac}.xml
+++ b/resources/templates/provision/cisco/spa509g/{$mac}.xml
@@ -106,7 +106,7 @@
 <!-- SIP/RTP_Parameters -->	
   <RTP_Port_Min group="SIP/RTP_Parameters">16384</RTP_Port_Min> 
   <RTP_Port_Max group="SIP/RTP_Parameters">16538</RTP_Port_Max> 
-  <RTP_Packet_Size group="SIP/RTP_Parameters">0.030</RTP_Packet_Size> 
+  <RTP_Packet_Size group="SIP/RTP_Parameters">0.020</RTP_Packet_Size> 
   <Max_RTP_ICMP_Err group="SIP/RTP_Parameters">0</Max_RTP_ICMP_Err> 
   <RTCP_Tx_Interval group="SIP/RTP_Parameters">0</RTCP_Tx_Interval> 
   <No_UDP_Checksum group="SIP/RTP_Parameters">No</No_UDP_Checksum> 
diff --git a/resources/templates/provision/cisco/spa512g/{$mac}.xml b/resources/templates/provision/cisco/spa512g/{$mac}.xml
index 2eee110e94..c1d16712a3 100644
--- a/resources/templates/provision/cisco/spa512g/{$mac}.xml
+++ b/resources/templates/provision/cisco/spa512g/{$mac}.xml
@@ -107,7 +107,7 @@
   <!-- SIP/RTP_Parameters -->
   <RTP_Port_Min group="SIP/RTP_Parameters">16384</RTP_Port_Min>
   <RTP_Port_Max group="SIP/RTP_Parameters">16538</RTP_Port_Max>
-  <RTP_Packet_Size group="SIP/RTP_Parameters">0.030</RTP_Packet_Size>
+  <RTP_Packet_Size group="SIP/RTP_Parameters">0.020</RTP_Packet_Size>
   <Max_RTP_ICMP_Err group="SIP/RTP_Parameters">0</Max_RTP_ICMP_Err>
   <RTCP_Tx_Interval group="SIP/RTP_Parameters">0</RTCP_Tx_Interval>
   <No_UDP_Checksum group="SIP/RTP_Parameters">No</No_UDP_Checksum>