The Gateway Utilization Report is a great way to get an idea of how many calls are traversing your gateway, conference bridge, or analog device. Keep in mind though VoIP Detective only has access to what's available in the CDRs provided by your Call Manager. If your gateway is shared by another cluster, or another device (i.e. a faxserver), those calls may not show up in the report, as the gateway listed in the CDR would be different (in our example, that fax server).
How the hourly peak is arrived at:
Every hour, VoIP Detective digs through it's call logs in one second increments, saying "show me calls where the originating gateway is XXX, next show me the calls where the destination gateway is XXX" it then adds these two numbers together for that on second moment in time. Once done for that hour, it puts all 3600 seconds into an array, and for each monitored gateway, picks the largest from that list, listing it as the max hourly calls.
Some items to be aware of:
- There is a hard limit of 100,000 hourly calls across all of your monitored gateways. If you are monitoring gateways that do more than 100,000 calls per hour, the excess calls will not be counted.
- If you have calls from another Call Manager, or phone system traversing your gateways, then these will not be counted (they will not be in the CDRs from our host Call Manager).
- Gateway Utilization is not backward looking. If you select a new gateway to be monitored, you must wait for new data to be processed, historical data will not be available.