SBC Allows INVITE When ‘from’ Header Is Outside DDI Range

(Doc ID 2344967.1)

Last updated on FEBRUARY 22, 2018

Applies to:

Net-Net OS - Version S-Cx6.2.0 and later
Information in this document applies to any platform.

Symptoms

 SBC allows INVITE when  ‘from’ header is outside DDI range

Customer complains that calls are allowed by SBC when ‘from’ header contains number outside the DDI range for this customer.

Customer wanted to know why P-asserted Identity was getting added and since the calls with P-Preferred Identity were getting successfully blocked why that was not added in the INVITE.

 

Cause

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