[cisco-voip] CUCM 9+ and SIP trunk provider w/o CUBE

[Brian Meade]

Robert,

You can technically get away with just using the provider's SBC but be
prepared for a lot of going back and forth with them to solve any interop
issues.  I like having my own SBC/CUBE so that I can modify whatever I want
and have more control over the setup.

It's also nice to be able to completely hide your internal network behind
the CUBE.

Brian


On Tue, Aug 12, 2014 at 7:41 PM, Robert Blayzor <rblayzor.bulk at inoc.net>
wrote:

> I am planning on replacing an again CallManager deployment with SCCP
> phones with a new CUCM 10.x and SIP phones.
>
> Our service provider can provide all of our trunking and PSTN connectivity
> via a direct SIP trunk, so I no longer need a PSTN gateway or PRI card,
> etc.  (or at least I should not).
>
> We will be peering SIP from the CUCM to our providers SBC, so the question
> begs to ask on our side is a CUBE absolutely required to make this work?
>  Pros/Cons?  I'd rather not have to add a CUBE in if I don't have to.
>
> Since the phones are native SIP as is the CallManager I'm trying to
> understand why a CUBE is required? (or is it not?)
>
> TIA
>
> -Robert
>
>
>
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