Yea, CUBE is really just any config in which it's IP to IP on both sides of
the router.  CME with a SIP or SCCP phone and a VoIP dial-peer to a SIP
carrier would be flow-through/address-hiding by default just like any VoIP
dial-peer by default.

On Wed, Jul 29, 2020 at 4:13 AM Gerence Guan <cisco.g...@gmail.com> wrote:

> Hi all
>
> If using Cisco SIP IP phone on CME which terminates the SIP trunk from
> service provider SBC, will it be media flow through by default? Can CME do
> the IP address hiding between the voice vlan and service provider, like
> what CUBE does?
>
> Best Regards,
> Guan
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