| Details | |
| Product: | Internet Security and Acceleration Server |
| Event ID: | 20005 |
| Source: | ISA Server H.323 Filter |
| Version: | 4.0.3443.594 |
| Component: | ISA Server Services |
| Message: | H.323 filter: invalid port (%1) configured for listening. Future H.323 incoming calls will be refused. |
| Explanation | |
| The port configured for the H.323 filter is either invalid or cannot be used. | |
| User Action | |
| Check that the port is in the valid port range and that it is not in use by any other application. For details about configuring the H.323 filter, see topic “To configure H.232 filter” in ISA Server help. | |