IMG 1010 - Pass through ‘+’ sign in the user part of URI

The IMG supports the passing of the  ‘+’ sign from the incoming SIP side to the outgoing SIP side, or the removal of the "+" if you do not want to pass it through. This process is only applied to INVITE.

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This feature is enabled in the IMG 1010 - SIP Profile - 10.5.3 with the Append (+) for Headers and Remove (+) for Headers fields.

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