The licensing depends on the number of VoIP links and not on the number of IP phones. OpManager doesn't monitor the VoIP phones or Per Call Quality metrics, so the number of VoIP phones is not considered.
OpManager leverages Cisco IP SLA (Service Level Agreements) to monitor the performance of VoIP connectivity between remote sites. That is, from the source device (Usually a Cisco Router) to a destination IP address, OpManager can tell you where exactly a potential performance bottleneck (in a VoIP link) is. Hence this add-on is priced based on the number of VoIP links that you wish to monitor.
To know more about Cisco IP SLA, refer www.cisco.com/go/ipsla.
No, the VoIP Monitor is not a separate downloadable file. The VoIP Monitor features are in-built from OpManager builds 7204 onward. The VoIP Monitor is available as an add-on to OpManager at $995.
Your evaluation copy will have the VoIP Monitor features available if you are using an OpManager build later than build number 7204. Visit this page for upgrade procedures if you are using an older build.
You first need to ensure you are using the latest build of OpManager - Build no. 7204. The Service Packs page has the upgrade packs and fixes required to upgrade older OpManager builds to the latest build. Then purchase the VoIP Monitor Add-on license and apply it to the latest build. Visit our store to purchase the Add-on license.
The OpManager VoIP Monitor monitors critical VoIP and video Quality of Service statistics such as:
OpManager VoIP Monitor relies on this technology to collect QoS metrics. The Cisco IOS IP Service Level Agreements(SLAs) is a Cisco technology use active monitoring to generate traffic in a continuous, reliable, and predictable manner, thus enabling the measurement of network performance and health. Visit this link to know more on Cisco IP SLA.
The OpManager VoIP Monitor helps you decide on whether your network infrastructure can handle any additional traffic by way of VoIP calls or video traffic. All that is needed is two Cisco routers and the OpManager VoIP Monitor will help find the effects (such as bandwidth changes) of the proposed additional VoIP or Video traffic, apart from showing what would be the quality (packet loss, delay, jitter, MOS) of video/VoIP calls.
Need more clarification or assistance, reach us @ http://support.opmanager.com