Removing the CUBE from topology

[AbteenZ]

Hello all,

We are in the process of changing our SIP trunk provider. Right now there is a cisco 2811 in between provider and CUCM acting as a CUBE.

The new provider is proposing removing the CUBE and connecting the sip trunk directly to CUCM.

What are the advantages/disadvantages of doing this? as I know CUBE acts as a firewall in between. also what happens to our DSP resources, Can we assign a DSP farm on a device that is not part of the call leg in CUCM to handle transcoding, conferencing, etc...

Thanks,

[Jaime Valencia]

The CUCM BU doesn't support a direct SIP trunk integration to a SP, they have not officially tested that scenario, and therefore it's not recommended, and not supported.

[AbteenZ]

Thanks Jamie,

Can you please explain more?

What about DSPs? Is it possible to use DSPs on other devices that are not part of the call legs in your calls?

[Jaime Valencia]

If you want to further discuss with the BU around this, you'll need to engage them via your SE/AM to ask.

Yes, it has always been possible to use DSP's on other devices that are not in the call flow. They will be invoked as necessary, and become part of the call flow.

[AbteenZ]

Sorry for my noob questions, what is BU and what is SE/AM ?

[Anthony Holloway]

BU = Business Unit (The group within Cisco responsible for the product)
SE = Sales Engineer (The technical person who you buy Cisco stuff from)
AM = Account Manager (The non-technical person who you buy Cisco stuff from)