| IBM Lotus Sametime 7.5.1 | Release Notes | 
| About this release | 1 | 
| New in this release | 1 | 
| New features in IBM Lotus Sametime 7.5.1 | 1 | 
| Backward compatibility | 3 | 
| Buddy list synchronization between 7.5.1 and  | 3 | 
| Product compatibility | 6 | 
| Installing Sametime 7.5.1 integration with Microsoft Office | 6 | 
| Sametime 7.5.1 integration with Microsoft Office | 8 | 
| Limitations using Macintosh OS X | 23 | 
| Spell checker overview | 24 | 
| Installation, migration, upgrade, and configuration information | 25 | 
| Hardware requirements | 25 | 
| Hardware requirements for Sametime 7.5.1 | 25 | 
| Hardware requirements for Sametime 7.5.1 Mobile | 27 | 
| Video Chat: Supported PC Cameras and WebCams | 27 | 
| Software requirements | 28 | 
| IBM Lotus Sametime 7.5.1 Connect client software requirements | 28 | 
| IBM Lotus Sametime 7.5.1 Meetings requirements | 29 | 
| IBM Lotus Sametime 7.5.1 Server software requirements | 29 | 
| Sametime Client for Macintosh: Additional Java requirements | 30 | 
| Installation notes | 30 | 
| Silent Install configuration | 30 | 
| Installing the Lotus Sametime 7.5.1 Software Development Kit | 31 | 
| 32 | |
| Linux Sametime Server 7.5.1 installation on VMWare | 32 | 
| Installing Sametime Conversion Services | 33 | 
| Operating System Single  | 33 | 
| Installing additional Spell Checker dictionaries | 35 | 
| Registry entry for Sametime installation directory | 36 | 
| Upgrade notes | 36 | 
| Conversion Services upgrade required | 36 | 
| Migrating privacy data after upgrading the server | 36 | 
| Configuration notes | 37 | 
| Launching and configuring the Sametime Connect 7.5.1 client | 37 | 
| Connecting to a Sametime server using a reverse proxy server | 38 | 
| Configuring Sametime to work behind WebSEAL reverse proxy | 38 | 
| Sametime Administrator needs to be in LDAP for policies to work | 39 | 
| Sametime Connect and HTTPS connections on port 443 or 563 | 40 | 
| Windows DEP process causes launch error | 44 | 
| Adjusting the logging level in sametime .properties | 44 | 
| Allow only one chat client connection per IP address | 45 | 
| 46 | |
| Case insensitive ID compare | 46 | 
| Collecting Resolve statistics | 46 | 
| Configurable preferred  | 46 | 
| Conversion Services on Windows Sametime servers | 47 | 
| Disabling partial search for users or public groups | 47 | 
| Force users to connect through home cluster | 48 | 
| Multiple Community considerations | 48 |