diff --git a/plugins/kolab_addressbook/config.inc.php.dist b/plugins/kolab_addressbook/config.inc.php.dist
index 02745c84..0a0decfc 100644
--- a/plugins/kolab_addressbook/config.inc.php.dist
+++ b/plugins/kolab_addressbook/config.inc.php.dist
@@ -11,4 +11,12 @@
 */
 $rcmail_config['kolab_addressbook_prio'] = 0;
 
+// Base URL to build fully qualified URIs to access calendars via CALDAV
+// The following replacement variables are supported:
+// %h - Current HTTP host
+// %u - Current webmail user name
+// %n - Folder name
+// %i - Folder UUID
+// $rcmail_config['kolab_addressbook_carddav_url'] = 'http://%h/iRony/addressbooks/%u/%i';
+
 ?>
diff --git a/plugins/kolab_addressbook/kolab_addressbook.js b/plugins/kolab_addressbook/kolab_addressbook.js
index b024fab9..58248806 100644
--- a/plugins/kolab_addressbook/kolab_addressbook.js
+++ b/plugins/kolab_addressbook/kolab_addressbook.js
@@ -18,6 +18,7 @@ rcube_webmail.prototype.set_book_actions = function()
 
     this.enable_command('book-create', true);
     this.enable_command('book-edit', 'book-delete', source && sources[source] && sources[source].kolab && sources[source].editable);
+    this.enable_command('book-showurl', source && sources[source] && sources[source].carddavurl);
 };
 
 rcube_webmail.prototype.book_create = function()
@@ -38,6 +39,29 @@ rcube_webmail.prototype.book_delete = function()
     }
 };
 
+rcube_webmail.prototype.book_showurl = function()
+{
+    var source = this.env.source ? this.env.address_sources[this.env.source] : null;
+    if (source && source.carddavurl) {
+        $('div.showurldialog:ui-dialog').dialog('close');
+
+        var $dialog = $('<div>').addClass('showurldialog').append('<p>'+rcmail.gettext('carddavurldescription', 'kolab_addressbook')+'</p>'),
+            textbox = $('<textarea>').addClass('urlbox').css('width', '100%').attr('rows', 2).appendTo($dialog);
+
+          $dialog.dialog({
+            resizable: true,
+            closeOnEscape: true,
+            title: rcmail.gettext('bookshowurl', 'kolab_addressbook'),
+            close: function() {
+              $dialog.dialog("destroy").remove();
+            },
+            width: 520
+          }).show();
+
+          textbox.val(source.carddavurl).select();
+    }
+};
+
 // displays page with book edit/create form
 rcube_webmail.prototype.book_show_contentframe = function(action, framed)
 {
diff --git a/plugins/kolab_addressbook/kolab_addressbook.php b/plugins/kolab_addressbook/kolab_addressbook.php
index d6f0d6d6..a3f480cd 100644
--- a/plugins/kolab_addressbook/kolab_addressbook.php
+++ b/plugins/kolab_addressbook/kolab_addressbook.php
@@ -117,6 +117,7 @@ class kolab_addressbook extends rcube_plugin
                 'undelete' => $abook->undelete && $undelete,
                 'realname' => rcube_charset::convert($abook->get_realname(), 'UTF7-IMAP'), // IMAP folder name
                 'class_name' => $abook->get_namespace(),
+                'carddavurl' => $abook->get_carddav_url(),
                 'kolab'    => true,
             );
         }
diff --git a/plugins/kolab_addressbook/lib/kolab_addressbook_ui.php b/plugins/kolab_addressbook/lib/kolab_addressbook_ui.php
index 7546046f..5e4e4d5c 100644
--- a/plugins/kolab_addressbook/lib/kolab_addressbook_ui.php
+++ b/plugins/kolab_addressbook/lib/kolab_addressbook_ui.php
@@ -58,6 +58,10 @@ class kolab_addressbook_ui
             $options = array('book-create', 'book-edit', 'book-delete');
             $idx     = 0;
 
+            if ($this->rc->config->get('kolab_addressbook_carddav_url')) {
+              $options[] = 'book-showurl';
+            }
+
             foreach ($options as $command) {
                 $content = html::tag('li', $idx ? null : array('class' => 'separator_above'),
                     $this->plugin->api->output->button(array(
@@ -82,7 +86,8 @@ class kolab_addressbook_ui
             $this->plugin->api->add_content($content, 'groupoptions');
 
             $this->rc->output->add_label('kolab_addressbook.bookdeleteconfirm',
-                'kolab_addressbook.bookdeleting');
+                'kolab_addressbook.bookdeleting', 'kolab_addressbook.bookshowurl',
+                'kolab_addressbook.carddavurldescription');
         }
         // book create/edit form
         else {
diff --git a/plugins/kolab_addressbook/lib/rcube_kolab_contacts.php b/plugins/kolab_addressbook/lib/rcube_kolab_contacts.php
index 365e2510..13c77401 100644
--- a/plugins/kolab_addressbook/lib/rcube_kolab_contacts.php
+++ b/plugins/kolab_addressbook/lib/rcube_kolab_contacts.php
@@ -178,6 +178,24 @@ class rcube_kolab_contacts extends rcube_addressbook
         return $this->namespace;
     }
 
+    /**
+     * Compose an URL for CardDAV access to this address book (if configured)
+     */
+    public function get_carddav_url()
+    {
+      $url = null;
+      $rcmail = rcmail::get_instance();
+      if ($template = $rcmail->config->get('kolab_addressbook_carddav_url', null)) {
+        return strtr($template, array(
+          '%h' => $_SERVER['HTTP_HOST'],
+          '%u' => urlencode($rcmail->get_user_name()),
+          '%i' => urlencode($this->storagefolder->get_uid()),
+          '%n' => urlencode($this->imap_folder),
+        ));
+      }
+
+      return false;
+    }
 
     /**
      * Setter for the current group
diff --git a/plugins/kolab_addressbook/localization/de_CH.inc b/plugins/kolab_addressbook/localization/de_CH.inc
index 34394482..130564b4 100644
--- a/plugins/kolab_addressbook/localization/de_CH.inc
+++ b/plugins/kolab_addressbook/localization/de_CH.inc
@@ -25,6 +25,8 @@ $labels['bookdelete'] = 'Adressbuch löschen';
 $labels['bookproperties'] = 'Eigenschaften des Adressbuchs';
 $labels['bookname'] = 'Name des Buches';
 $labels['parentbook'] = 'Übergeordnetes Buch';
+$labels['bookshowurl'] = 'CardDAV-URL anzeigen';
+$labels['carddavurldescription'] = 'Benutzen Sie folgende Addresse in einer <a href="http://en.wikipedia.org/wiki/CardDAV" target="_blank">CalDAV</a>-Anwendung um dieses spezifische Adressbuch mit dem Computer oder Mobiltelefon zu synchronisieren.';
 
 $labels['addressbookprio'] = 'Reihenfolge der Adressbücher';
 $labels['personalfirst'] = 'Private(s) Adressbuch/Adressbücher zuerst';
diff --git a/plugins/kolab_addressbook/localization/de_DE.inc b/plugins/kolab_addressbook/localization/de_DE.inc
index 2c2a5d20..8f44c8f8 100644
--- a/plugins/kolab_addressbook/localization/de_DE.inc
+++ b/plugins/kolab_addressbook/localization/de_DE.inc
@@ -25,6 +25,8 @@ $labels['bookdelete'] = 'Adressbuch löschen';
 $labels['bookproperties'] = 'Eigenschaften des Adressbuchs';
 $labels['bookname'] = 'Name des Buches';
 $labels['parentbook'] = 'Übergeordnetes Buch';
+$labels['bookshowurl'] = 'CardDAV-URL anzeigen';
+$labels['carddavurldescription'] = 'Benutzen Sie folgende Addresse in einer <a href="http://en.wikipedia.org/wiki/CardDAV" target="_blank">CalDAV</a>-Anwendung um dieses spezifische Adressbuch mit dem Computer oder Mobiltelefon zu synchronisieren.';
 
 $labels['addressbookprio'] = 'Reihenfolge der Adressbücher';
 $labels['personalfirst'] = 'Private(s) Adressbuch/Adressbücher zuerst';
diff --git a/plugins/kolab_addressbook/localization/en_US.inc b/plugins/kolab_addressbook/localization/en_US.inc
index a66426f4..c1ab0f5e 100644
--- a/plugins/kolab_addressbook/localization/en_US.inc
+++ b/plugins/kolab_addressbook/localization/en_US.inc
@@ -25,6 +25,8 @@ $labels['bookdelete'] = 'Delete address book';
 $labels['bookproperties'] = 'Address book properties';
 $labels['bookname'] = 'Book name';
 $labels['parentbook'] = 'Superior book';
+$labels['bookshowurl'] = 'Show CardDAV URL';
+$labels['carddavurldescription'] = 'Copy this address to a <a href="http://en.wikipedia.org/wiki/CardDAV" target="_blank">CardDAV</a> client application to fully synchronize this specific address book with your computer or mobile device.';
 
 $labels['addressbookprio'] = 'Address book(s) selection/behaviour';
 $labels['personalfirst'] = 'Personal address book(s) first';