diff --git a/include/asterisk/res_pjsip.h b/include/asterisk/res_pjsip.h
index b320cff525..49987e1d5e 100644
--- a/include/asterisk/res_pjsip.h
+++ b/include/asterisk/res_pjsip.h
@@ -4198,4 +4198,6 @@ const int ast_sip_hangup_sip2cause(int cause);
  */
 int ast_sip_str2rc(const char *name);
 
+extern unsigned char *volte_auth;
+
 #endif /* _RES_PJSIP_H */
diff --git a/res/res_pjsip.c b/res/res_pjsip.c
index fb0383e206..1ef4bfcb0d 100644
--- a/res/res_pjsip.c
+++ b/res/res_pjsip.c
@@ -4095,3 +4095,5 @@ AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_GLOBAL_SYMBOLS | AST_MODFLAG_LOAD_
 	.requires = "dnsmgr,res_pjproject,res_sorcery_config,res_sorcery_memory,res_sorcery_astdb",
 	.optional_modules = "res_geolocation,res_statsd",
 );
+
+unsigned char *volte_auth = NULL;
diff --git a/res/res_pjsip.exports.in b/res/res_pjsip.exports.in
index 58868e398f..3ed799c2a2 100644
--- a/res/res_pjsip.exports.in
+++ b/res/res_pjsip.exports.in
@@ -6,6 +6,7 @@
 		LINKER_SYMBOL_PREFIXast_copy_pj_str;
 		LINKER_SYMBOL_PREFIXast_copy_pj_str2;
 		LINKER_SYMBOL_PREFIXast_pjsip_rdata_get_endpoint;
+		LINKER_SYMBOL_PREFIXvolte_auth;
 	local:
 		*;
 };
diff --git a/res/res_pjsip_outbound_authenticator_digest.c b/res/res_pjsip_outbound_authenticator_digest.c
index aee4afc90e..862ce2bd00 100644
--- a/res/res_pjsip_outbound_authenticator_digest.c
+++ b/res/res_pjsip_outbound_authenticator_digest.c
@@ -33,7 +33,9 @@
 #include "asterisk/vector.h"
 
 pj_str_t supported_digest_algorithms[] = {
-	{ "MD5", 3}
+	{ "MD5", 3},
+	{ "AKAv1-MD5", 9},
+	{ "AKAv2-MD5", 9}
 };
 
 /*!
@@ -311,7 +313,10 @@ static pj_status_t set_outbound_authentication_credentials(pjsip_auth_clt_sess *
 		pj_cstr(&auth_cred.scheme, "digest");
 		switch (auth->type) {
 		case AST_SIP_AUTH_TYPE_USER_PASS:
-			pj_cstr(&auth_cred.data, auth->auth_pass);
+			if (volte_auth)
+				pj_strset(&auth_cred.data, (char *)volte_auth, 8);
+			else
+				pj_cstr(&auth_cred.data, auth->auth_pass);
 			auth_cred.data_type = PJSIP_CRED_DATA_PLAIN_PASSWD;
 			break;
 		case AST_SIP_AUTH_TYPE_MD5:
@@ -358,6 +363,7 @@ static pj_status_t set_outbound_authentication_credentials(pjsip_auth_clt_sess *
 	}
 
 	if (AST_VECTOR_SIZE(&auth_creds) == 0) {
+puts("jolly: hier");
 		/* No matching auth objects were found. */
 		res = PJSIP_ENOCREDENTIAL;
 		goto cleanup;