diff --git a/src/core/index.ts b/src/core/index.ts
index 24b355d..5bb9002 100644
--- a/src/core/index.ts
+++ b/src/core/index.ts
@@ -113,15 +113,16 @@ export const vsipAPI: VsipAPI = {
         speakerVolume: speakerVolume,
     },
     actions: {
-        init (domain, username, password, pnExtraHeaders) {
+        init (domain, username, password, socketInterfaces, pnExtraHeaders) {
             try {
+                socketInterfaces = socketInterfaces && socketInterfaces.length > 0 ? socketInterfaces : [ `wss://${domain}` ]
                 openSIPSJS = new OpenSIPSJS({
                     configuration: {
                         session_timers: false,
                         uri: `sip:${username}@${domain}`,
                         password: password
                     },
-                    socketInterfaces: [ `wss://${domain}` ],
+                    socketInterfaces,
                     sipDomain: `${domain}`,
                     sipOptions: {
                         session_timers: false,