[cisco-voip] H.323 ISDN question..

[Andrius Kislas]

Correct me if I am wrong, but I think you need dedicated h323-to-h320
(like 3527 MCU) gateway if you want to connect H323 conferencing devices
to ISDN conferencing devices (that work using h320).

Andrius


Tim Reimers wrote:
>  
> 
> Here’s a possibly OT question, but perhaps not OT.
> 
>  
> 
> We run CCM 4.01 and have a 2651 terminating two ISDN PRIs in H.323 mode
> (not MGCP)
> 
> The 2651 runs c2600-ipvoice-mz.123-8.T3
> 
>  
> 
> Here’s the question-
> 
>  
> 
> We have some Sony PCS-11 and a Tandberg video conferencing unit.
> 
> We normally use video conferencing sites that support IP connectivity,
> but I’m now hearing of sites that staff want to conference with which
> are ISDN only.
> 
>  
> 
> Is it possible to somehow register the Sony/Tandberg units as H.323
> clients on the phone system and have them use the ISDN PRI channels for
> making video-calls ??
> 
>  
> 
>  
> 
> It would seem like perhaps with the CCM and the ISDN we already own that
>  we possibly already have a lot of the pieces necessary to allow our
> video conferencing units to use ISDN when needed, via some sort of
> connectivity through the CCM/2651 H.323 gateway??
> 
>  
> 
>  
> 
> Or can I/should I think in terms of them using the 2651 as an MCU
> directly and not involve the CCM at all??
> 
>  
> 
> Or am I talking about two completely different usages of the ISDN PRI
> and I can’t use the PRI for both CCM voice calls AND for video conferencing?
> 
>  
> 
> Not being familiar with how videoconferencing over ISDN works for sure,
> I’m not certain if ISDN is ISDN, or whether there’s some different setup
> going on for VOIP versus video calls..
> 
>  
> 
> 
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