diff --git a/src/core/dset.c b/src/core/dset.c
index f682cede710..26530c27693 100644
--- a/src/core/dset.c
+++ b/src/core/dset.c
@@ -873,6 +873,30 @@ int msg_get_src_addr(sip_msg_t *msg, str *uri, int mode)
 	return 0;
 }
 
+
+/**
+ * set name of alias parameter used for contact/r-uri src/rcv address encoding
+ */
+int ksr_contact_alias_set_name(str *aname)
+{
+	_ksr_contact_salias.s = (char*)pkg_malloc(aname->len + 3);
+	if(_ksr_contact_salias.s==NULL) {
+		PKG_MEM_ERROR;
+		return -1;
+	}
+	_ksr_contact_salias.s[0] = ';';
+	memcpy(_ksr_contact_salias.s + 1, aname->s, aname->len);
+	_ksr_contact_salias.s[aname->len+1] = '=';
+	_ksr_contact_salias.s[aname->len+2] = '\0';
+	_ksr_contact_salias.len = aname->len + 2;
+	_ksr_contact_alias.s = _ksr_contact_salias.s + 1;
+	_ksr_contact_alias.len = _ksr_contact_salias.len - 1;
+	LM_DBG("new contact alias parameter expression [%.*s]\n",
+			_ksr_contact_salias.len, _ksr_contact_salias.s);
+
+	return 0;
+}
+
 /**
  * add alias parameter with encoding of source address
  * - nuri->s must point to a buffer of nuri->len size
diff --git a/src/core/dset.h b/src/core/dset.h
index 56ffe953eb3..b661fc7c847 100644
--- a/src/core/dset.h
+++ b/src/core/dset.h
@@ -285,6 +285,7 @@ int getbflagsval(unsigned int branch, flag_t* res);
  */
 int setbflagsval(unsigned int branch, flag_t val);
 
+int ksr_contact_alias_set_name(str *aname);
 int uri_add_rcv_alias(sip_msg_t *msg, str *uri, str *nuri);
 int uri_restore_rcv_alias(str *uri, str *nuri, str *suri);
 int uri_trim_rcv_alias(str *uri, str *nuri);