[cisco-voip] CM database query

[Wes Sisk]

DA is real time and must depend on information in memory, there is no 
time to do a database dip.

That said in all default features I am aware of a call placed on the 
subscriber does not depend on the publisher database.  This is subject 
to some interpretation:

1. this assumes no IPCCX/CRA/CUEA or other custom scripting involved 
that may attempt to intercept calls and attempt some lookup via AXL.  
This would be atypical but it possible.
2. Contents of the publisher database would be replicated to the 
subscriber (or not replicated if replication broken).  Consider the case 
of a phone registered to the publisher setting call forward all to a 
cell phone destination.  If replication is broken the CFA change only 
occurs on the publisher. The subscriber is not informed of the change.  
A call initiated from a phone (and specifically line) registered to the 
publisher would route to the CFA destination. A call initiated on a 
phone (and specifically line) registered to the subscriber would NOT 
ring the CFA destination.

In this way you could say that call processing is dependent on the 
publisher database. It is a 2nd order abstraction rather than a direct 
correlation.

Hope this helps,
Wes

On Tuesday, August 10, 2010 4:41:35 PM, Kevin Damisch 
<kevin.damisch at vitalsite.com> wrote:
>
> Nothing really.  Just doing verification of what actually occurs 
> between the phone/pub/sub during a simple call in regards to the 
> database queries for pattern lookups such as a DN, route pattern, 
> etc.  So, if a phone is registered to a subscriber, and dials a route 
> pattern for example, does the database query for that pattern occur on 
> the publisher or the subscriber?
>
>  
>
> *From:* Dennis Heim [mailto:Dennis.Heim at cdw.com]
> *Sent:* Tuesday, August 10, 2010 3:34 PM
> *To:* Kevin Damisch; cisco-voip at puck.nether.net
> *Subject:* RE: CM database query
>
>  
>
> What are you trying to accomplish?
>
>  
>
> Dennis Heim
> Network Voice Engineer
> CDW  Advanced Technology Services
> 11711 N. Meridian Street, Suite 225
> Carmel, IN  46032
>
> 317.569.4255 Office
> 317.569.4201 Fax
> 317.694.6070 Cell
>
> dennis.heim at cdw.com <mailto:dennis.heim at cdw.com>
> cdw.com/content/solutions/unified-communications/ 
> <http://www.cdw.com/content/solutions/unified-communications/>
>
>  
>
>  
>
> *From:* cisco-voip-bounces at puck.nether.net 
> [mailto:cisco-voip-bounces at puck.nether.net] *On Behalf Of *Kevin Damisch
> *Sent:* Tuesday, August 10, 2010 12:55 PM
> *To:* cisco-voip at puck.nether.net
> *Subject:* [cisco-voip] CM database query
>
>  
>
> In CM 6/7/8, if the phones are registered to the subscriber and the 
> phone dials a DN, what query is done to the publisher database at that 
> time?  Or, is all call processing and database queries done only on 
> the subscriber?  This is assuming that the publisher is online.  
> Obviously, if the publisher is down, everything will be queried 
> against the subscriber.
>
>  
>
> Thanks,
>
> Kevin
>
>  
>
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