diff --git a/resources/templates/provision/cisco/spa504g/{$mac}.xml b/resources/templates/provision/cisco/spa504g/{$mac}.xml
index addced6f37..59c2bbc7ad 100644
--- a/resources/templates/provision/cisco/spa504g/{$mac}.xml
+++ b/resources/templates/provision/cisco/spa504g/{$mac}.xml
@@ -76,7 +76,7 @@
 <Try_Backup_RSC group="SIP/Response_Status_Code_Handling" />
 <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_Port_Max group="SIP/RTP_Parameters">32768</RTP_Port_Max>
 <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>