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Use the Dry Up Mode Handling window to configure actions while the SBC is in dry-up mode ("out of service mode"). These configurable actions allow the user to silently discard OPTIONS ping or keepalive messages, or to reject these messages with a configurable SIP cause code. Without this feature's configurable actions, the SBC responds to incoming messages with a "503 Service Unavailable" response.

From the SBC main screen, navigate to All → Address Context → Zone → SIP Sig Port → Dry Up Mode Handling or All → Global → System → Dry Up Mode Handling:

 

Use the following table while configuring the options, and then click Save.

Edit Dry Up Mode Parameters

Parameter

Description

Options Keepalive

Handles the OPTIONS health-check or keepalive messages during dry up mode.

  • Disabled (default)
  • Reject – The SBC rejects messages with a configurable SIP cause code
  • Silent Discard – The SBC silently discards OPTIONS ping and keepalive messages 
Options Keepalive Reject Reason

The SIP cause code used for rejecting the keepalive OPTIONS message.

Ood And Invite

Handles the INVITE and other Out Of Dialog messages during dry-up mode. These configurable actions allow the user to silently discard out of dialog messages (REGISTER, OPTIONS, SUBSCRIBE, NOTIFY, PUBLISH, INFO, MESSAGE, REFER) and INVITE messages, or to reject these messages with a configurable SIP cause code

  • Disabled (default)
  • Reject – The SBC rejects messages with a configurable SIP cause code.
  • Silent Discard – The SBC silently discards INVITE and other OOD messages.
Ood And Invite Reject Reason

The SIP cause code used for rejecting the new INVITE, OPTIONS that require further routing, as well as OOD messages (REGISTER, OPTIONS, SUBSCRIBE, NOTIFY, PUBLISH, INFO, MESSAGE, REFER).

Modified: for 12.1.1

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