[cisco-voip] Inter Cluster Shared Lines

[Turpin, Mark]

Can you elaborate on the bandwidth restraints?  Are you concerned about
RTP or signaling?

 

I think there was a misunderstanding on the 40ms requirement too.  We're
talking about CCM <-> Phone can be*much* higher than 40ms.  The 40ms
rule is only for CCM node to CCM node communication.

 

Looking forward to your response,

-Mark

 

 

--

MARK TURPIN  |  Systems Engineer  |  CCIE 21649 (Voice) |  Calence /
Insight Networking Solutions  | www.calence.com  

t. 314.656.2315   c. 314.660.5800   f. 314.656.2355
mark.turpin at calence.com

 

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From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Lewis, Chris
Sent: Wednesday, November 12, 2008 8:15 AM
To: Justin Steinberg
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Inter Cluster Shared Lines

 

I did state 40ms one way and do know the contraints I have.

 

I have been through the SRND (version 6) also.

 

If I am trying to go for full redundancy then I will need separate
clusters due to the bandwidth contraints.

 

Thanks for the help on this

 

 

 

________________________________

From: Justin Steinberg [mailto:jsteinberg at gmail.com] 
Sent: 12 November 2008 14:12
To: Lewis, Chris
Cc: Ed Leatherman; cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Inter Cluster Shared Lines

the 40 ms latency requirement only applies to communication between CCM
nodes.   Phones can be further away from the CMs.  Also, with newer
versions of CM the latency requirement can be as high as 80 ms between
nodes depending on the amount of available bandwidth you can dedicate to
CM intercluster traffic and DB replication.

perhaps you can reevalute whether you need two clusters?

have you read the SRND, good place to start for reading about CM design.

http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/srnd/7x/uc7_0.html




On Wed, Nov 12, 2008 at 7:53 AM, Lewis, Chris <Chris.Lewis at magnetar.com>
wrote:

I would but the bandwidth requirements are too high - over the specified
40ms (one way) - hence the need for differing clusters.  The set up you
have suggested is what we have already.

 

I have also tried using Hunt groups but they do not work across clusters
either.

 

________________________________

From: Ed Leatherman [mailto:ealeatherman at gmail.com] 
Sent: 12 November 2008 12:49
To: Lewis, Chris
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Inter Cluster Shared Lines

Would it be feasible to register just those phones where that shared DN
needs to appear all on the same cluster?

On Wed, Nov 12, 2008 at 5:26 AM, Lewis, Chris <Chris.Lewis at magnetar.com>
wrote:

Are you able to use shared lines across clusters on UCM 6.1.2?

 

IE  If  I have a Dn 5555 which rings across multile phones
simultaneously wihtin a single cluster at present (UCM4.1) , if I change
to separate clusters (due to location and bandwidth requirements) when I
migrate to UCM 6.1.2 can this still be achieveable?

 

If not then does anyone have any suggestions as to how I can utilise a
"hotline"number for all users across multile clusters?

 

Thanks

 

Chris


-- 
Ed Leatherman
Assistant Director, Voice Services
West Virginia University
Telecommunications and Network Operations

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