[cisco-voip] Bandwidth Requirements between CUCM Cluster and distributed Unity Connection

[Peter Slow]

(to clarify, the QoS for the VM port signaling is your primary concern
because it's the only thing consistently  going across the WAN. You
still need to keep QoS in mind for messages being played back towards
users listening to their VM across the WAN in the event that there are
users in that scenario. You should still keep LAN QoS in mind at the
local site as it can still save you in the event of something like a
switching loop or other type of localized traffic storm.)

On Mon, Feb 8, 2010 at 4:15 PM, Peter Slow <peter.slow at gmail.com> wrote:
> Keith,
>
>> Thank you for your comments.  The reason for Unity Connection being located
>> on a remote site is because the gateway is also located on the same site and
>
> that's intelligent placement of your unity server.
>
>> the bandwidth between the sites is limited.  I did see a comment once
>> stating we should treat each voicemail port as a phone and allow the
>> appropriate QOS across the WAN.
>
> ...Correct, this should be your primary concern. The only other thing
> I'd be concerned about is, in the event that you have Connection
> forwarding any messages to your user's mailboxes, where is the mail
> server located? if you aren't doing that then it won't be an issue.
>
> -Peter
>
>
>
>
> On Mon, Feb 8, 2010 at 10:25 AM, Keith Allan <Keith.Allan at 5i.co.uk> wrote:
>> Mathew,
>>
>>
>>
>> Thank you for your comments.  The reason for Unity Connection being located
>> on a remote site is because the gateway is also located on the same site and
>> the bandwidth between the sites is limited.  I did see a comment once
>> stating we should treat each voicemail port as a phone and allow the
>> appropriate QOS across the WAN.
>>
>>
>>
>> Thanks again.
>>
>>
>>
>> Keith.
>>
>>
>>
>> From: Matthew Saskin [mailto:msaskin at gmail.com]
>> Sent: 08 February 2010 15:18
>> To: Keith Allan
>> Cc: cisco-voip at puck.nether.net
>> Subject: Re: [cisco-voip] Bandwidth Requirements between CUCM Cluster and
>> distributed Unity Connection
>>
>>
>>
>> Keith -
>>
>>
>>
>> I don't think there are any specific requirements, primarily because of how
>> unity works.  Essentially, Unity is represented to CallManager by the
>> voicemail ports, which are just SCCP devices (or a SIP trunk, depending).
>> The bigger concern (depending on your topology) is not the distance from
>> CallManager to Unity, but the distance from the ingress voice gateways or
>> originating IP phone to unity as that's where the voice stream is.
>>
>> Matthew Saskin
>> msaskin at gmail.com
>> 203-253-9571
>>
>> July 18, 2010 - 1500m swim (in the hudson), 40k bike, 10k run
>> Please support the Leukemia & Lyphoma Society
>> http://pages.teamintraining.org/nyc/nyctri10/msaskin
>>
>> On Sun, Feb 7, 2010 at 2:31 PM, Keith Allan <Keith.Allan at 5i.co.uk> wrote:
>>
>> Hi,  We have a centralised CUCM cluster and need to install Unity Connection
>> on a remote site. The design guides show this is supported but I can't find
>> any minimum bandwidth requirements for the WAN between CUCM and UCN other
>> than the standard min 150ms one way delay.
>>
>>
>>
>> Does anyone know what these requirements are before we go ahead and deploy?
>>
>>
>>
>> many thanks,  Keith.
>>
>>
>>
>>
>>
>>
>>
>>
>>
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>>
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>