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The dialogTransparency
flag under the Zone object passes dialogs transparently for SIP messages processed in that specified zone. If dialog transparency is disabled, the SBC translates the dialog identifiers in the Target-Dialog header received in INVITE and REFER messages and sends the Target-Dialog header with translated dialog identifiers on the other leg. If dialog transparency is enabled, Target-Dialog header translation is not performed. However, the header is transparently passed if configured in transparency profile.The dialogTransparency
flag must be enabled on both ingress and egress zones because if the flag is only enabled on one zone, all calls and messages are rejected. In this situation, the sonusSbxDialogTransparencyMisConfiguredNotification alarm is raised on the zone in which the flag is disabled.
Note
The following features are not supported by the SBC when Dialog Transparency is enabled:
- Support of local handling of REFER (REFER relay is supported)
- Late media support for downstream forking (when both downstream forking and dialog transparency are enabled
- Dialog Transparency support in REGISTER
- NICE recording call flows
- GW-GW support
Command Syntax
% set addressContext <addressContext Name> zone <zone Name> dialogTransparency <disabled | enabled>
Command Parameters
Zone Dialog Transparency Parameters
Parameter | Length/Range | Description |
---|
zone
| 1-23 | The name of the zone. You can configure signaling, media, and control for a zone in the address context.
Zone name is unique across all address contexts.
|
dialogTransparency
| N/A | Enable flag SBC to send "Call-ID", "From" tag, and "To" tag transparently in the outgoing SIP message. disabled (default) – SBC translates the dialog identifiers in the Target-Dialog header received in INVITE and REFER messages and sends the Target-Dialog header with translated dialog identifiers on the other leg.enabled – Target-Dialog header translation is not performed. However, the header is transparently passed if configured in transparency profile.
This flag must be enabled in both the ingress and egress zones. Otherwise, the sonusSbxDialogTransparencyMisConfiguredNotification alarm is raised on the zone in which the flag is disabled.
Before enabling Dialog Transparency in a zone, ensure all sipSigPorts in that zone are first disabled.
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