diff --git a/controllers/call.js b/controllers/call.js
index a903e96..f65ff29 100644
--- a/controllers/call.js
+++ b/controllers/call.js
@@ -2,30 +2,15 @@ import stack from "./stack.js";
 
 class Call {
   session = null;
-  calledInput = document.getElementById("called-input");
   callText = document.getElementById("call-text");
   callButton = document.getElementById("call-button");
-  hangUpButton = document.getElementById("hang-up-button");
+  calledInput = document.getElementById("called-input");
   audioRemote = document.getElementById("audio-remote");
-  // holdButton = document.getElementById("hold-button");
-  // resumeButton = document.getElementById("resume-button");
+  hangUpButton = document.getElementById("hang-up-button");
 
   eventListener = (event) => {
     console.log(event);
     switch (event.type) {
-      // case "m_local_hold_ok":
-      //   this.holdButton.removeEventListener("click", this.holdCall);
-      //   this.holdButton.disabled = true;
-
-      //   this.resumeButton.addEventListener("click", this.resumeCall);
-      //   this.resumeButton.disabled = false;
-      //   break;
-
-      // case "m_local_resume_ok":
-      //   this.resumeButton.removeEventListener("click", this.resumeCall);
-      //   this.resumeButton.disabled = true;
-      //   break;
-
       case "connecting":
         this.callText.textContent = event.description;
         break;
@@ -40,13 +25,6 @@ class Call {
       case "terminated":
         this.hangUpButton.removeEventListener("click", this.hangUp);
         this.hangUpButton.disabled = true;
-
-        // this.holdButton.removeEventListener("click", this.holdCall);
-        // this.holdButton.disabled = true;
-
-        // this.resumeButton.removeEventListener("click", this.resumeCall);
-        // this.resumeButton.disabled = true;
-
         this.callText.textContent = "";
         this.calledInput.value = null;
         this.callButton.disabled = false;
@@ -63,6 +41,7 @@ class Call {
 
     this.session = stack.sip.newSession("call-audio", {
       audio_remote: this.audioRemote,
+
       events_listener: {
         events: "*",
         listener: this.eventListener,
@@ -79,14 +58,6 @@ class Call {
   hangUp = () => {
     this.session.hangup();
   }
-
-  // holdCall = () => {
-  //   this.session.hold();
-  // }
-
-  // resumeCall = () => {
-  //   this.session.resume();
-  // }
 }
 
 let call = new Call();
diff --git a/controllers/register.js b/controllers/register.js
index e30575f..1b124af 100644
--- a/controllers/register.js
+++ b/controllers/register.js
@@ -11,7 +11,6 @@ class Register {
 
     if (isReadToCall) {
       let callButton = document.getElementById("call-button");
-      
       callButton.addEventListener("click", call.makeCall);
       callButton.disabled = false;
     }
diff --git a/controllers/stack.js b/controllers/stack.js
index 19b6a76..21ade62 100644
--- a/controllers/stack.js
+++ b/controllers/stack.js
@@ -19,14 +19,15 @@ class Stack {
     let conf = configs.sip;
 
     this.sip = new SIPml.Stack({
-      realm: conf.realm,
       impi: conf.impi,
       impu: conf.impu,
+      realm: conf.realm,
       password: conf.password,
+      ice_servers: conf.ice_servers,
       display_name: conf.display_name,
       websocket_proxy_url: conf.websocket_proxy_url,
-      ice_servers: conf.ice_servers,
       enable_rtcweb_breaker: conf.enable_rtcweb_breaker,
+
       events_listener: {
         events: "*",
         listener: this.eventListener,