diff --git a/app.js b/app.js
index d03821af2..89db9e41e 100644
--- a/app.js
+++ b/app.js
@@ -16,6 +16,7 @@ var APP =
         this.translation = require("./modules/translation/translation");
         this.settings = require("./modules/settings/Settings");
         this.DTMF = require("./modules/DTMF/DTMF");
+        this.members = require("./modules/members/MemberList");
     }
 };
 
@@ -30,6 +31,7 @@ function init() {
     APP.desktopsharing.init();
 
     APP.keyboardshortcut.init();
+    APP.members.start();
 }
 
 
diff --git a/modules/UI/UI.js b/modules/UI/UI.js
index 2d50351ab..b7b70cd87 100644
--- a/modules/UI/UI.js
+++ b/modules/UI/UI.js
@@ -26,6 +26,7 @@ var DesktopSharingEventTypes
 var RTCEvents = require("../../service/RTC/RTCEvents");
 var StreamEventTypes = require("../../service/RTC/StreamEventTypes");
 var XMPPEvents = require("../../service/xmpp/XMPPEvents");
+var MemberEvents = require("../../service/members/Events");
 
 var eventEmitter = new EventEmitter();
 var roomName = null;
@@ -224,6 +225,8 @@ function registerListeners() {
             VideoLayout.setDeviceAvailabilityIcons(resource, devices);
         });
 
+    APP.members.addListener(MemberEvents.DTMF_SUPPORT_CHANGED,
+                            onDtmfSupportChanged);
 }
 
 
@@ -502,6 +505,16 @@ function onPasswordRequired(callback) {
         ':input:first'
     );
 }
+
+/**
+ * The dialpad button is shown iff there is at least one member that supports
+ * DTMF (e.g. jigasi).
+ */
+function onDtmfSupportChanged(dtmfSupport) {
+    //TODO: enable when the UI is ready
+    //Toolbar.showDialPadButton(dtmfSupport);
+}
+
 function onMucMemberJoined(jid, id, displayName) {
     messageHandler.notify(displayName,'notify.somebody',
         'connected',
diff --git a/modules/members/MemberList.js b/modules/members/MemberList.js
new file mode 100644
index 000000000..343d98f02
--- /dev/null
+++ b/modules/members/MemberList.js
@@ -0,0 +1,123 @@
+/* global APP */
+
+/**
+ * This module is meant to (eventually) contain and manage all information
+ * about members/participants of the conference, so that other modules don't
+ * have to do it on their own, and so that other modules can access members'
+ * information from a single place.
+ *
+ * Currently this module only manages information about the support of jingle
+ * DTMF of the members. Other fields, as well as accessor methods are meant to
+ * be added as needed.
+ */
+
+var XMPPEvents = require("../../service/xmpp/XMPPEvents");
+var Events = require("../../service/members/Events");
+var EventEmitter = require("events");
+
+var eventEmitter = new EventEmitter();
+
+/**
+ * The actual container.
+ */
+var members = {};
+
+/**
+ * There is at least one member that supports DTMF (i.e. is jigasi).
+ */
+var atLeastOneDtmf = false;
+
+
+function registerListeners() {
+    APP.xmpp.addListener(XMPPEvents.MUC_MEMBER_JOINED, onMucMemberJoined);
+    APP.xmpp.addListener(XMPPEvents.MUC_MEMBER_LEFT, onMucMemberLeft);
+}
+
+/**
+ * Handles a new member joining the MUC.
+ */
+function onMucMemberJoined(jid, id, displayName) {
+    var member = {
+        displayName: displayName
+    };
+
+    APP.xmpp.getConnection().disco.info(
+        jid, "" /* node */, function(iq) { onDiscoInfoReceived(jid, iq); });
+
+    members[jid] = member;
+}
+
+/**
+ * Handles a member leaving the MUC.
+ */
+function onMucMemberLeft(jid) {
+    delete members[jid];
+    updateAtLeastOneDtmf();
+}
+
+/**
+ * Handles the reception of a disco#info packet from a particular JID.
+ * @param jid the JID sending the packet.
+ * @param iq the packet.
+ */
+function onDiscoInfoReceived(jid, iq) {
+    if (!members[jid])
+        return;
+
+    var supportsDtmf
+        = $(iq).find('>query>feature[var="urn:xmpp:jingle:dtmf:0"]').length > 0;
+    updateDtmf(jid, supportsDtmf);
+}
+
+/**
+ * Updates the 'supportsDtmf' field for a member.
+ * @param jid the jid of the member.
+ * @param newValue the new value for the 'supportsDtmf' field.
+ */
+function updateDtmf(jid, newValue) {
+    var oldValue = members[jid].supportsDtmf;
+    members[jid].supportsDtmf = newValue;
+
+    if (newValue != oldValue) {
+        updateAtLeastOneDtmf();
+    }
+}
+
+/**
+ * Checks each member's 'supportsDtmf' field and updates
+ * 'atLastOneSupportsDtmf'.
+ */
+function updateAtLeastOneDtmf(){
+    var newAtLeastOneDtmf = false;
+    for (var key in members) {
+        if (typeof members[key].supportsDtmf !== 'undefined'
+            && members[key].supportsDtmf) {
+            newAtLeastOneDtmf= true;
+            break;
+        }
+    }
+
+    if (atLeastOneDtmf != newAtLeastOneDtmf) {
+        atLeastOneDtmf = newAtLeastOneDtmf;
+        eventEmitter.emit(Events.DTMF_SUPPORT_CHANGED, atLeastOneDtmf);
+    }
+}
+
+
+/**
+ * Exported interface.
+ */
+var Members = {
+    start: function(){
+        registerListeners();
+    },
+    addListener: function(type, listener)
+    {
+        eventEmitter.on(type, listener);
+    },
+    removeListener: function (type, listener) {
+        eventEmitter.removeListener(type, listener);
+    }
+};
+
+module.exports = Members;
diff --git a/service/members/Events.js b/service/members/Events.js
new file mode 100644
index 000000000..02b006b7f
--- /dev/null
+++ b/service/members/Events.js
@@ -0,0 +1,5 @@
+var Events = {
+    DTMF_SUPPORT_CHANGED: "members.dtmf_support_changed"
+};
+
+module.exports = Events;