Sprint SIP/ CUCM---is CUBE required

Unanswered Question
Aug 5th, 2009

DO we need to use CUBE? Of can I just setup a SIP trunk from CUCM?

I have this problem too.
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Nicholas Matthews Wed, 08/05/2009 - 10:33

You should check out the SIP trunk Q&A that Christina just finished.

I've stolen this response from her:

Reasons to terminate a SIP trunk on an enterprise demarc such as CUBE include but are not limited to:

- Lack of call admission control (SLA enforcement and DOS attack mitigation) on the SIP trunk

- Visibility of the CUCM and endpoint IP addresses to the SP network (and therefore to potential hackers)

- Very limited SIP trunk load balancing and redundancy capabilities

- No SIP trunk sharing between multiple CUCM clusters or other IP-PBX/proxy call agents in the enterprise

- No SIP malformed packet or other protocol level attack mitigation for your CUCM

- No way to troubleshoot voice quality problems to determine if it's your network or the SPs network at fault

- Much more limited toll fraud prevention techniques on the SIP trunk

- No way to control IP QoS settings on the incoming packets from the SP, and no way to customize them on the outgoing packets

- No way to manipulate SIP msging from the SP before it hits your CUCM to customize it to what CUCM/IP-PBX prefers to see

- Limited means of complying to the SP UNI (SIP msg manipulation on outbound msgs to the SP, and capabilities such as early-offer)

- Having to implement the SP UNI on CUCM instead of your enterprise preferred policies (and having to replicate this on every CUCM and IP-PBX routing calls to the SIP trunk)

- Having no way of doing a SIP registration to the SP when this is required on the SIP trunk

Technically you can do it, but it isn't suggested. However if your SIP provider requires registration then you would need CUBE, however.



jforcum Mon, 08/10/2009 - 09:56

Where can I find Christina's SIP Trunk Q&A?

Please ignore. I found the Q&A.

Wilson Samuel Mon, 08/10/2009 - 10:05


Is the location for Christina's Forum.

Alternatively just go to the main page of the "Unified Communications and Video" page from NetPro home


Please rate if it helps.


Wilson Samuel

gear53x11 Tue, 04/20/2010 - 08:09

What type of reporting do you get from Sprint if any? Is there an easy way to tell how many minutes/channels our branch offices are using per office?


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