diff --git a/package.json b/package.json
index 02cbb32942..9d9d9520c9 100644
--- a/package.json
+++ b/package.json
@@ -87,7 +87,7 @@
     "redux-thunk": "^2.2.0",
     "ringcentral": "^3.1.2",
     "ringcentral-client": "^1.0.0-rc1",
-    "ringcentral-integration": "^0.7.7",
+    "ringcentral-integration": "^0.7.9",
     "sass-loader": "^6.0.5",
     "source-map-loader": "^0.2.1",
     "style-loader": "^0.18.2",
diff --git a/src/components/ActiveCallPanel/styles.scss b/src/components/ActiveCallPanel/styles.scss
index 7d0ccb3c39..7caeded9b6 100644
--- a/src/components/ActiveCallPanel/styles.scss
+++ b/src/components/ActiveCallPanel/styles.scss
@@ -16,8 +16,13 @@ $avatar-width: 60px;
 }
 
 .backButton {
-  font-size: $primary-font-size;
   color: $lightblack;
+  i {
+    font-size: $primary-font-size;
+  }
+  span {
+    font-size: 0.9em;
+  }
   &:hover {
     color: $lightblack;
   }
diff --git a/src/components/CallAlert/i18n/en-US.js b/src/components/CallAlert/i18n/en-US.js
index e6a562288d..7674faa4c1 100644
--- a/src/components/CallAlert/i18n/en-US.js
+++ b/src/components/CallAlert/i18n/en-US.js
@@ -10,4 +10,5 @@ export default {
   [callErrors.networkError]: 'Cannot connect due to network issues. Please try again later.',
   [callErrors.noRingoutEnable]: 'Your extension is allowed to make calls with desktop app.\n    If you wish to switch to other calling options\n    please contact your account administrator for an upgrade.',
   areaCode: 'area code',
+  telus911: 'Emergency dialing is not supported.'
 };
diff --git a/src/components/CallAlert/index.js b/src/components/CallAlert/index.js
index 51b32417c3..f9d0a6765b 100644
--- a/src/components/CallAlert/index.js
+++ b/src/components/CallAlert/index.js
@@ -4,13 +4,25 @@ import callErrors from 'ringcentral-integration/modules/Call/callErrors';
 import FormattedMessage from '../FormattedMessage';
 import i18n from './i18n';
 
+const TELUS_ID = '7310';
 export default function CallAlert({
   message: {
     message,
+    payload,
   },
+  brand,
   onAreaCodeLinkClick,
   currentLocale,
 }) {
+  // If brand is Telus and special number is 911,
+  // show messages of its own version.
+  if (
+    brand && brand.id === TELUS_ID &&
+    message === callErrors.specialNumber &&
+    payload && payload.phoneNumber === '911'
+  ) {
+    return (<span>{i18n.getString('telus911', currentLocale)}</span>);
+  }
   if (message === callErrors.noAreaCode) {
     const areaCode = i18n.getString('areaCode', currentLocale);
     const areaCodeLink = onAreaCodeLinkClick ?
@@ -40,10 +52,11 @@ CallAlert.propTypes = {
   message: PropTypes.shape({
     message: PropTypes.string.isRequired,
   }).isRequired,
+  brand: PropTypes.object.isRequired,
   currentLocale: PropTypes.string.isRequired,
 };
 CallAlert.defaultProps = {
-  onAreaCodeLinkClick: undefined,
+  onAreaCodeLinkClick: undefined
 };
 
 CallAlert.handleMessage = ({ message }) => (
diff --git a/src/components/RecentActivityView/index.js b/src/components/RecentActivityView/index.js
index 2a5b367c08..4ab8545df4 100644
--- a/src/components/RecentActivityView/index.js
+++ b/src/components/RecentActivityView/index.js
@@ -31,7 +31,7 @@ export default class RecentActivityView extends PureComponent {
 
   onTabChanged = (tabName = this.props.defaultTab) => {
     const currentTab = this.getCurrentTab(tabName);
-    currentTab.getData();
+    if (currentTab) currentTab.getData();
     this.setState({
       currentTab: tabName
     });
@@ -40,7 +40,7 @@ export default class RecentActivityView extends PureComponent {
   getCurrentTabPanel() {
     const currentTabPath = this.state.currentTab;
     const currentTab = this.getCurrentTab(currentTabPath);
-    return currentTab.view || null;
+    return currentTab ? currentTab.view : null;
   }
 
   getCurrentTab(currentTabPath) {
diff --git a/src/containers/AlertContainer/index.js b/src/containers/AlertContainer/index.js
index 4c888aee15..5528584bd3 100644
--- a/src/containers/AlertContainer/index.js
+++ b/src/containers/AlertContainer/index.js
@@ -49,6 +49,7 @@ function getDefaultRenderer({
       return props => (
         <CallAlert
           {...props}
+          brand={brand}
           onAreaCodeLinkClick={onRegionSettingsLinkClick}
         />
       );
diff --git a/yarn.lock b/yarn.lock
index 26629730aa..438093ca3c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -6626,9 +6626,9 @@ ringcentral-client@^1.0.0-rc1:
     form-data "^2.1.2"
     isomorphic-fetch "^2.2.1"
 
-ringcentral-integration@^0.7.7:
-  version "0.7.7"
-  resolved "https://registry.yarnpkg.com/ringcentral-integration/-/ringcentral-integration-0.7.7.tgz#6740abefecafb95d2ffc94bb44ac0c1614190530"
+ringcentral-integration@^0.7.9:
+  version "0.7.9"
+  resolved "https://registry.yarnpkg.com/ringcentral-integration/-/ringcentral-integration-0.7.9.tgz#78a97dc18c7af9572afc9919b919e7b5ffb11913"
   dependencies:
     file-loader "^0.11.2"
     json-mask "^0.3.8"