diff --git a/utils/coreutils.go b/utils/coreutils.go
index 6ac6b8cd6..f734c3895 100644
--- a/utils/coreutils.go
+++ b/utils/coreutils.go
@@ -226,10 +226,10 @@ func ParseZeroRatingSubject(rateSubj string) (time.Duration, error) {
 	return time.ParseDuration(durStr)
 }
 
-// Used to parse extra fields definition into regexp rules
-func ParseSearchReplaceRegexp(strRule string) (*regexp.Regexp, string, error) {
+// Used to parse extra fields definition search regexp rule and replace template
+func ParseSearchReplaceStr(strRule string) (*regexp.Regexp, string, error) {
 	// String rule expected in the form ~hdr_name:s/match_rule/replace_rule/
-	getRuleRgxp := regexp.MustCompile(`:s\/(.+[^\\])\/(.+[^\\])\/`) // Make sure the separator / is not escaped in the rule
+	getRuleRgxp := regexp.MustCompile(`~\w+:s\/(.+[^\\])\/(.+[^\\])\/`) // Make sure the separator / is not escaped in the rule
 	allMatches := getRuleRgxp.FindStringSubmatch(strRule)
 	if len(allMatches) != 3 { // Second and third groups are of interest to us
 		return nil, "", errors.New("Invalid Search&Replace rule.")
@@ -242,9 +242,9 @@ func ParseSearchReplaceRegexp(strRule string) (*regexp.Regexp, string, error) {
 }
 
 // Used to expand string sources, eg: extra fields
-func RegexpSearchReplace(src string, searchRl *regexp.Regexp, replaceTpl string) string {
+func RegexpSearchReplace(src string, searchRgxp *regexp.Regexp, replaceTpl string) string {
 	res := []byte{}
-	match := searchRl.FindStringSubmatchIndex(src)
-	res = searchRl.ExpandString(res, replaceTpl, src, match)
+	match := searchRgxp.FindStringSubmatchIndex(src)
+	res = searchRgxp.ExpandString(res, replaceTpl, src, match)
 	return string(res)
 }
diff --git a/utils/utils_test.go b/utils/utils_test.go
index 1e5bcefb0..0ac912dbd 100644
--- a/utils/utils_test.go
+++ b/utils/utils_test.go
@@ -19,6 +19,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>
 package utils
 
 import (
+	"reflect"
+	"regexp"
 	"testing"
 	"time"
 )
@@ -385,3 +387,46 @@ func TestParseZeroRatingSubject(t *testing.T) {
 		}
 	}
 }
+
+func TestParseSearchReplaceStr(t *testing.T) {
+	// Normal case
+	strRule := `~sip_redirected_to:s/sip:\+49(\d+)@/0$1/`
+	srchRgxp, replaceTpl, err := ParseSearchReplaceStr(strRule)
+	if srchRgxp == nil || len(replaceTpl) == 0 || err != nil {
+		t.Error("Could not parse the str rule")
+	} else if !reflect.DeepEqual(srchRgxp, regexp.MustCompile(`sip:\+49(\d+)@`)) {
+		t.Error("Unexpected regexp search parsed")
+	} else if replaceTpl != "0$1" {
+		t.Error("Unexpected replace template parsed")
+	}
+	// Missing ~ prefix
+	strRule = `sip_redirected_to:s/sip:\+49(\d+)@/0$1/`
+	if _, _, err := ParseSearchReplaceStr(strRule); err == nil {
+		t.Error("Parse error, srchrepl rule does not start with ~")
+	}
+	// Separator escaped
+	strRule = `~sip_redirected_to:s\/sip:\+49(\d+)@/0$1/`
+	if _, _, err := ParseSearchReplaceStr(strRule); err == nil {
+		t.Error("Parse error, srchrepl rule does not contain correct number of separators")
+	}
+	// One extra separator but escaped
+	strRule = `~sip_redirected_to:s/sip:\+49(\d+)\/@/0$1/`
+	srchRgxp, replaceTpl, err = ParseSearchReplaceStr(strRule)
+	if srchRgxp == nil || len(replaceTpl) == 0 || err != nil {
+		t.Error("Could not parse the str rule")
+	} else if !reflect.DeepEqual(srchRgxp, regexp.MustCompile(`sip:\+49(\d+)\/@`)) {
+		t.Error("Unexpected regexp search parsed")
+	} else if replaceTpl != "0$1" {
+		t.Error("Unexpected replace template parsed")
+	}
+}
+
+func TestRegexpSearchReplace(t *testing.T) {
+	srchRgxp := regexp.MustCompile(`sip:\+49(\d+)@(\d*\.\d*\.\d*\.\d*)`)
+	replaceTpl := "0$1@$2"
+	source := "<sip:+4986517174963@127.0.0.1;transport=tcp>"
+	expectOut := "086517174963@127.0.0.1"
+	if outStr := RegexpSearchReplace(source, srchRgxp, replaceTpl); outStr != expectOut {
+		t.Error("Unexpected output from SearchReplace: ", outStr)
+	}
+}