[cisco-voip] CUCM & NAT

[Ryan Ratliff]

If it's all H.323 run 'debug h225 q931' to get the basic gist of  
what's going on.  You should see inbound setup, outbound setup, etc.

If your provider can't route to the IP phones you may want to  
register some DSPFarm resources on the CUBE and have it proxy the audio.

-Ryan

On Feb 11, 2009, at 5:31 PM, Lemon wrote:

HI,

Yes, i have the IP-IP gateway (CUBE) configured - or atleast i think i
have it configured:
c2800nm-ipvoice_ivs-mz.124-22.T.bin

!
voice call send-alert
voice call convert-discpi-to-prog
voice call carrier capacity active
voice rtp send-recv
!
voice service voip
  allow-connections h323 to h323
  allow-connections h323 to sip
  allow-connections sip to h323
  allow-connections sip to sip
  no supplementary-service h225-notify cid-update
  redirect ip2ip
  signaling forward unconditional
  fax protocol t38 ls-redundancy 0 hs-redundancy 0 fallback cisco
   cause-code legacy
  h323
   h450 h450-3 timeout T1 750
   no h225 timeout keepalive
   h225 h245-address on-connect
   h225 h245-address setup
  modem passthrough nse codec g711alaw
  sip
   rel1xx disable
   min-se 360
   header-passing
   redirect contact order best-match
!
!
!
!
voice class codec 1
  codec preference 1 g711ula
  codec preference 2 g729r8
  codec preference 3 g711alaw
!
!
dial-peer voice 3000 voip
  destination-pattern T
  progress_ind setup enable 1
  modem passthrough nse codec g711alaw redundancy
  voice-class codec 1
  session target ipv4:X.x.x.x
  dtmf-relay rtp-nte h245-signal h245-alphanumeric
  fax protocol t38 ls-redundancy 0 hs-redundancy 0 fallback none
  icpif 25
  no vad
!


thnx
charl

On Thu, Feb 12, 2009 at 12:15 AM, Wes Sisk <wsisk at cisco.com> wrote:
> not by default.  that would require the IOS h323 gateway to 'tadem'  
> the voip
> call.  Which does not work until the CUBE or IP-IP gateway feature  
> set.
>
> Your IOS gateway will have to be configured as an IP-IP gateway (or  
> CUBE in
> the new lingo) for that to work.
>
> /Wes
>
> On Wednesday, February 11, 2009 3:59:56 PM, Lemon <lemon at lemon.za.net>
> wrote:
>
> RIght, So i thought this would be straight forward
>
> Sending outbound calls from CUCM to h323 gateway which has a voip
> dial-peer to the providers h323 gateway.
> When making outbound calls we get ringback on the IP Phone and
> eventually it just dies - the other end never actually rings.
>
> Any ideas/pointers greatly appreciated,
>
> Thnx
> charl
>
> On Tue, Feb 10, 2009 at 9:47 PM, Wes Sisk <wsisk at cisco.com> wrote:
>
>
> This is the definition of a border controller or CUBE.
> /Wes
>
> On Tuesday, February 10, 2009 2:36:26 PM, Lemon  
> <lemon at lemon.za.net> wrote:
>
>
> Hi,
>
> Telco can't deliver PRI to customer site so now we have to
> send/receive calls via a service provider H323 Gateway. Problem is
> that we will need to NAT everything in order to talk to SP's H323
> Gateway. We are using:
>
> CUCM 6.1.2 --->Cisco 2821--->SP Network--->SP H323 Gateway
>
> Just wondering on the best way to achieve this or pitfalls to look out
> for?
>
> thnx
> charl
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