Polycom RealPresence Group Series 500 Enter the IP Address of the device in your browser. Enter your username and password. Navigate to Admin Settings > Network > IP Network. Configure the following: Enable IP H.323. Enter the H.323 Name. This is the extension of the device. Enter the H.323 Extension. This is the extension of the device. Select Specify for Use Gatekeeper field. Enable Authentication and enter the extension in the User Name field. Enter the Gatekeeper IP Address in the Primary Gatekeeper IP Address field. Expand the Firewall section, and then enable H.460 Firewall Traversal. Click Save. Configure LDAP Navigate to Admin Settings > Servers > Directory Servers. Configure the following: Select LDAP for the Server Type. Enter ldapexport.lifesizecloud.com as the Server Address. Enter the Server Port. See Open Network Ports for more information. Enter o=cloud, dc=lifesize, dc=com as the Base DN (Distinguished Name). Enter o=cloud, dc=lifesize, dc=com as the Multitiered Default Group DN. Select Basic as the Authentication Type. Select the Use SSL (Secure Socket Layer) check box. Enter uid=<extension> as the Bind DN (Distinguished Name). Enter the password provided by Lifesize. Click Save.