public enum DestinationType| None | 0 | |
| VoiceMail | 1 | destination is voicemail box of Extension |
| Extension | 2 | destination is Extension |
| Queue | 3 | destination is Queue |
| RingGroup | 4 | destination is RingGroup |
| IVR | 5 | destination is IVR |
| External | 6 | destination is external number ExternalLine and OutboundRule |
| Fax | 7 | destination is FaxExtension |
| Boomerang | 8 |
destination is "boomerang" to external number with fallback to VoiceMail of extension
Internal property of Destination should specify the extension. External property of Destination should specify the external number |
| Deflect | 9 | applicable only for inbound rules of the line. PBX should not route call to extenal number it should respond with 302 to PSTN/VoIP provider. |
| VoiceMailOfDestination | 10 | destination is voicemail of extension which is subject of this forwarding rule. Reserved for future use. Equal to EndCall. |
| Callback | 11 | destination is callback. Reserved for callback implementation |
| RoutePoint | 12 | Dest is RoutePoint |
| ProceedWithNoExceptions | 13 | special destination for exception rules/time based routes such destination means that the call should come to the DN without redirection |