zentao/extension/xuan/conference/lang/en.php

<?php
$lang->conference->common                       = 'Conference';
$lang->conference->admin                        = 'Conference';
$lang->conference->notset                       = 'Not set';
$lang->conference->enabled                      = 'Conference';
$lang->conference->enabledTip                   = 'Enable conference';
$lang->conference->domain                       = 'Server Address';
$lang->conference->serverAddrTip                = 'For example: xuan.im.com:8443 or meet.xuan.im.com';
$lang->conference->jwtSecret                    = 'JWT Secret';

$lang->conference->inputError = new stdClass();
$lang->conference->inputError->domain = 'Please enter a valid server address';