diff --git a/modules/acc_radius/acc_radius_mod.c b/modules/acc_radius/acc_radius_mod.c
index 5a660d6e331..382033990d0 100644
--- a/modules/acc_radius/acc_radius_mod.c
+++ b/modules/acc_radius/acc_radius_mod.c
@@ -74,6 +74,7 @@ static char *radius_config = 0;
 int radius_flag = -1;
 int radius_missed_flag = -1;
 static int service_type = -1;
+int rad_time_mode=0;
 void *rh;
 /* rad extra variables */
 static char *rad_extra_str = 0;
@@ -91,11 +92,12 @@ static cmd_export_t cmds[] = {
 
 
 static param_export_t params[] = {
-	{"radius_config",        PARAM_STRING, &radius_config        },
+	{"radius_config",        PARAM_STRING, &radius_config     },
 	{"radius_flag",          INT_PARAM, &radius_flag          },
 	{"radius_missed_flag",   INT_PARAM, &radius_missed_flag   },
 	{"service_type",         INT_PARAM, &service_type         },
-	{"radius_extra",         PARAM_STRING, &rad_extra_str        },
+	{"radius_extra",         PARAM_STRING, &rad_extra_str     },
+	{"rad_time_mode",          INT_PARAM, &rad_time_mode      },
 	{0,0,0}
 };
 
@@ -328,6 +330,8 @@ int acc_radius_send_request(struct sip_msg *req, acc_info_t *inf)
 	int m=0;
 	int o=0;
 	int rc_result=-1;
+	double tsecmicro;
+	char smicrosec[18];
 	
 	send=NULL;
 
@@ -347,9 +351,18 @@ int acc_radius_send_request(struct sip_msg *req, acc_info_t *inf)
 	av_type = req->REQ_METHOD; /* method */
 	ADD_RAD_AVPAIR( RA_SIP_METHOD, &av_type, -1);
 
-	/* unix time */
-	av_type = (uint32_t)inf->env->ts;
-	ADD_RAD_AVPAIR( RA_TIME_STAMP, &av_type, -1);
+	// Event Time Stamp with Microseconds
+        if(rad_time_mode==1){
+                gettimeofday(&inf->env->tv, NULL);
+                tsecmicro=inf->env->tv.tv_sec+((double)inf->env->tv.tv_usec/1000000.0);
+                //radius client doesn t support double so convert it
+                sprintf(smicrosec,"%17.6f",tsecmicro);
+                ADD_RAD_AVPAIR(RA_TIME_STAMP, &smicrosec, -1);
+        }else{
+                av_type = (uint32_t)inf->env->ts;
+                ADD_RAD_AVPAIR(RA_TIME_STAMP, &av_type, -1);
+        }
+
 
 	/* add extra also */
 	o = accb.get_extra_attrs(rad_extra, req, inf->varr+attr_cnt,
diff --git a/modules/acc_radius/doc/acc_radius_admin.xml b/modules/acc_radius/doc/acc_radius_admin.xml
index 17ebd2cce31..f4394579152 100644
--- a/modules/acc_radius/doc/acc_radius_admin.xml
+++ b/modules/acc_radius/doc/acc_radius_admin.xml
@@ -166,6 +166,39 @@ modparam("acc_radius", "radius_extra", "via=$hdr(Via[*]); email=$avp(s:email)")
 </programlisting>
 		</example>
 	</section>
+	<section>
+		<title><varname>rad_time_mode</varname>(integer)</title>
+		<para>
+		Radius Event-Timestamp for accounting. 
+		</para>
+		<para>
+		Values can be:
+		</para>
+		<itemizedlist>
+		<listitem>
+			<para><emphasis>0</emphasis> -  (default), format is only unix
+				timestamp for Event-Timestamp (For example: 1445590624)</para>
+		</listitem>
+		<listitem>
+			<para><emphasis>1</emphasis> - format is unix timestamp with microseconds
+			in Addition, it needs to change Event-Timestamp attribute type in dictionary to string
+			both radius server and client
+			(For example: 1445590624.377372)   </para>
+		</listitem>
+ 		</itemizedlist>
+		
+		<para>
+		Default value is 0 (Unix timestamp).
+		</para>
+		<example>
+		<title>rad_time_mode example</title>
+		<programlisting format="linespecific">
+...
+modparam("acc_radius", "rad_time_mode", 1)
+...
+</programlisting>
+		</example>
+</section>
 	</section>
 
 	<section>