[cisco-voip] What controls bearer-cap?

[Wes Sisk]

Robert,

 From a colleague:

<quote>
GW should just pass the bearer-cap from the incoming leg to the outgoing 
leg for pri-pri scenario. I have a similar setup in my lab using BRI - PRI.

Couple of things to try :

1) If we remove the translation-profile from the voice-ports, do we see 
the "unrestricted digital" bearer-cap in the outgoing isdn setup?

2) we enable the following debugs and collect the output for a failure 
call in order to see where bearer-cap is lost :

no logging console
no logging mon
logging buffered 5000000 debug

debug voip ccapi inout
debug voice translation
debug isdn q931
debug cdapi event
debug cdapi detail
debug voip tsp default

sh ver
sh run
sh log
</quote>

/Wes

On Wednesday, August 18, 2010 10:07:28 AM, Robert Kulagowski 
<rkulagow at gmail.com> wrote:
> On Tue, Aug 17, 2010 at 4:45 PM, Wes Sisk <wsisk at cisco.com> wrote:
>   
>> In that case the router may modify the bearer cap. You may need to use the
>> new video PRI features in ISR's.
>> http://www.cisco.com/en/US/docs/ios/12_4t/12_4t11/h320gw.html#wp1234629
>>     
>
> That doesn't work.  I've got probably 7 or 8 TAC cases over the past 3
> years (basically since day Feature+1) trying to get this to work, and
> it never does.  TAC guys that I've worked with are great, but when
> they ask me to change H.225 parameters on the endpoints that's when I
> know that it's not ready for primetime.  (None of our endpoints have
> any knobs that can be tweaked for that sort of stuff, and they "just
> work" when they connect using either native ISDN or Codian 3241s,
> so...)
>
>   
>> Otherwise, you may have applied the workaround for CUVA calls not working
>> which forces the bearer cap?
>> http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_tech_note09186a0080569b65.shtml#topic2
>>     
>
> Nope, not that:
> voice-port 0/1/0:23
>  translation-profile incoming Prepend_Sitecode
>  no comfort-noise
> !
> voice-port 0/2/0:23
>  translation-profile incoming Prepend_Sitecode
>  no comfort-noise
> !
> voice-port 0/3/0:15
> !
> voice-port 2/0/0
> !
>
> 0/3/0 is the cross-over PRI to the equipment, and it's showing a
> correct bearer channel of Unrestricted Digital.  Both 0/1/0 and 0/2/0
> make the call Speech on the outbound leg.
>   

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