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Cisco Unified Contact Center Enterprise Solution Reference ...

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Chapter 11 Bandwidth Provisioning and QoS Considerations<br />

Private Network Bandwidth<br />

OL-8669-05<br />

<strong>Cisco</strong> <strong>Unified</strong> <strong>Contact</strong> <strong>Center</strong> <strong>Enterprise</strong> 7.x SRND<br />

Bandwidth Provisioning<br />

<strong>Unified</strong> ICM Central Controller to <strong>Unified</strong> IP IVR or <strong>Unified</strong> CVP PG<br />

A tool is accessible to <strong>Cisco</strong> partners and <strong>Cisco</strong> employees for computing the bandwidth needed between<br />

the ICM Central Controller and the IP IVR PG. This tool is called the VRU Peripheral Gateway to ICM<br />

Central Controller Bandwidth Calculator, and it is available (with proper login authentication) through<br />

the <strong>Cisco</strong> Steps to Success Portal at<br />

http://tools.cisco.com/s2slv2/viewProcessFlow.do?method=browseStepsPage&modulename=brow<br />

se&stepKeyId=55|EXT-AS-107287|EXT-AS-107288|EXT-AS-107301&isPreview=null&prevTech<br />

ID=null&techName=IP%20Communications<br />

At this time, no tool exists that specifically addresses communications between the <strong>Unified</strong> ICM Central<br />

Controller and the <strong>Cisco</strong> <strong>Unified</strong> Customer Voice Portal (<strong>Unified</strong> CVP) PG. Testing has shown, however,<br />

that the tool for calculating bandwidth needed between the <strong>Unified</strong> ICM Central Controller and the<br />

<strong>Unified</strong> IP IVR PG will also produce accurate measurements for <strong>Unified</strong> CVP if you perform the<br />

following substitution in one field:<br />

For the field labeled Average number of RUN VRU script nodes, substitute the number of <strong>Unified</strong><br />

ICM script nodes that interact with <strong>Unified</strong> CVP.<br />

Table 11-4 is a worksheet to assist with computing the link and queue sizes for the private network.<br />

Definitions and examples follow the table.<br />

Note Minimum link size in all cases is 1.5 Mbps (T1).<br />

Table 11-4 Worksheet for Calculating Private Network Bandwidth<br />

Component Effective BHCA<br />

Router +<br />

Logger<br />

<strong>Cisco</strong> <strong>Unified</strong><br />

CallManager<br />

PG<br />

<strong>Unified</strong> IP IVR<br />

PG<br />

<strong>Unified</strong> CVP<br />

PG<br />

<strong>Unified</strong> IP IVR<br />

or<br />

<strong>Unified</strong> CVP<br />

Variables<br />

Multiplication<br />

Factor<br />

Recommended<br />

Link<br />

Multiplication<br />

Factor<br />

Recommended<br />

Queue<br />

∗ 30 ∗ 0.8 Total<br />

Router+Logger<br />

High-Priority<br />

Queue Size<br />

∗ 100 ∗ 0.9 Add these three<br />

numbers<br />

together and<br />

∗ 60 ∗ 0.9<br />

∗ 120 ∗ 0.9<br />

∗ ((Number of<br />

Variables ∗ Average<br />

Variable Length) /<br />

40)<br />

∗ 0.9<br />

total in the<br />

shaded box<br />

below to get<br />

the PG<br />

High-Priority<br />

Queue size.<br />

Total Link Size Total PG<br />

High-Priority<br />

Queue Size<br />

11-15

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