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The SBC supports optionally dropping a received initial INVITE requests without generating any reply (including a 100 response) based on the following algorithm:

  1. userPart of Request-URI matches a registration RCB:

    1. If hostpart of Request-URI matches the hostpart of the REGISTER Contact used for RCB, continue normal processing.

    2. Otherwise, silently drop the initial INVITE

  2. userPart of Request-URI does not match a registration RCB:

    1. If userpart of the Request-URI matches a PSX routing label, continue normal processing.

    2. Otherwise, silently drop the initial INVITE

The CLI syntax to suppress the response for non-route invite is shown below:

set addressContext <acName> zone <zoneName> sipTrunkGroup <tgName> signaling suppressNonRouteInviteResponse enabled
Info

Refer to SIP Trunk Group - Signaling - CLI for details.

 

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