Intelletrace provides a monitoring service for $1.00 per port. You have full access to the  graphs with a daily or weekly network report.  The monitoring tool has the ability to test VOIP Quality of Service to ensure you know there is an issue before your users.  There is a startup fee. The start up fee depends if you provide a Computer (Virtual or Real) or if Intelletrace provides an appliance.

Monitoring Service:
Dynamically updating network map: Shows performance of all critical WAN links on one pannable map interface.
Advanced performance monitoring: Automatically monitors utilization, packet rate, broadcast rate and error rate of every network link.
Performance trending: Tracks and displays historical utilization and error rates for every network link. Exports data in CSV format for further analysis.
Availability monitoring: Tracks and summarizes availability for each device on your network.
Outage alerting: Sends alerts via pager or email for link failures, device failures, excessive utilization and excessive errors rates.
Syslog server: Syslog messages can be received logged and alerts can be generated based on the received message.
Auto-diagnosis: Network Prescription™ diagnoses common problems and recommends solutions in plain English.
Network dashboard: Displays network status at a glance for all the devices on your network.
Emailed Daily health report: Emails report on network status to keep everyone informed about what's happening.
Top-10 lists: Displays the heaviest transmitters, receivers, broadcasters and error generators on your network.
Network inventory: Automatically discovers all devices on the network and gathers  key configuration information such as serial number and OS version.
Device drilldown: Displays detailed information about a device and all of its interfaces.
Hard data: Jitter, latency, packet loss, and Mean Opinion Score (MOS) for every monitored device.

Ability to Capture and alert using Netflow $65 MRC.

The NetFlow module implements Cisco NetFlow technology in a unique method that permits us to know about in-process flows. Thus, there is no need to wait until a flow is completed before knowing about the usage. This permits you to see who is using bandwidth live -- without the use of a packet analyzer or mirror port.