[cisco-voip] quick question about sip and CUBE

[Anthony Holloway]

What's your ultimate goal that you want/need two trunks to a single CUBE?

So in CUBE you would do something like this:

dial-peer voice 1 voip
 description Trunk 1
 session protocol sipv2
 destination-pattern 1...$
 session-target ipv4:10.1.1.1:5061
!
dial-peer voice 2 voip
 description Trunk 2
 session protocol sipv2
 destination-pattern 2...$
 session-target ipv4:10.1.1.1:5062
!

And then in CUCM you would need to create two new SIP Trunk Security
Profiles (Found under System > Security in 8.6), specifying the port in
which CUCM should expect to receive the messages.  Create your two trunks
pointing to the CUBE, using respective SIP Trunk security profiles, and
that's how you force an inbound trunk.

As for the MTP question: You can require MTP for all calls, which can be
good and bad.  That's no different from H323 trunks to gateways.  The
require only when needed comes in to play for SIP Early Offer only.  And
that's a matter of the calling device and whether or not CUCM receives its
capabilities or has to make something up using an MTP's capbilities.  DTMF
relay mismatch (Out of band versus In band) is a different story, and
there's no check box for that.  That's simply a function of the Media
Manager and the MRGL on the SIP trunk, which will correct DTMF mismatches
automatically by dynamically using an MTP as needed.  So, three different
things going on there.

I hope that helped explain it a bit more.  Maybe someone else will fill in
some of my gaps.


On Thu, Apr 4, 2013 at 10:22 AM, Erick Wellnitz <ewellnitzvoip at gmail.com>wrote:

>
> If I have two sip trunks from CUCM to CUBE (one which requires MTP and one
> which does not) how does the CUBE or CUCM know which trunk settings to use
> for inbound calls to CUCM?
>
> Is it best to make all of the inbound settings the same and do all of the
> translations on the CUBE or CUCM translation patterns instead of setting
> the significant digits?
>
> I'm also remembering someone telling me a while back that if you uncheck
> the MTP Required that th etrunk will still allocate MTP if needed.  Is that
> correct?  It would allow me to only use the one trunk with translations.
>
> As always, thanks for the help!
>
>
>
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