diff --git a/doc/CHANGES-staging/res_pjsip.txt b/doc/CHANGES-staging/res_pjsip.txt
new file mode 100644
index 0000000000..ffbf13a9c2
--- /dev/null
+++ b/doc/CHANGES-staging/res_pjsip.txt
@@ -0,0 +1,5 @@
+Subject: res_pjsip
+
+PJSIP support of registrations of endpoints in multidomain
+scenarios, where the endpoint contains the domain info
+in pjsip_endpoint.conf
diff --git a/res/res_pjsip.c b/res/res_pjsip.c
index 3e9e4541ec..809096d096 100644
--- a/res/res_pjsip.c
+++ b/res/res_pjsip.c
@@ -3841,6 +3841,17 @@ static int sip_dialog_create_from(pj_pool_t *pool, pj_str_t *from, const char *u
 		type |= PJSIP_TRANSPORT_IPV6;
 	}
 
+	/* In multidomain scenario, username may contain @ with domain info */
+	if (!ast_sip_get_disable_multi_domain() && strchr(user, '@')) {
+		from->ptr = pj_pool_alloc(pool, PJSIP_MAX_URL_SIZE);
+		from->slen = pj_ansi_snprintf(from->ptr, PJSIP_MAX_URL_SIZE,
+				"<sip:%s%s%s>",
+				user,
+				(type != PJSIP_TRANSPORT_UDP && type != PJSIP_TRANSPORT_UDP6) ? ";transport=" : "",
+				(type != PJSIP_TRANSPORT_UDP && type != PJSIP_TRANSPORT_UDP6) ? pjsip_transport_get_type_name(type) : "");
+		return 0;
+	}
+
 	if (!ast_strlen_zero(domain)) {
 		from->ptr = pj_pool_alloc(pool, PJSIP_MAX_URL_SIZE);
 		from->slen = pj_ansi_snprintf(from->ptr, PJSIP_MAX_URL_SIZE,