Based on our recommendations, a single Data Collector Virtual Machine (VM) should not be expected to support a call volume of more than 1,250,000 calls per day from Cisco Unified Communications Manager (CUCM).
The general recommendation is based on the following reasonable assumptions:
- 1 CUCM Call Detail Record (CDR) is approximately 1KB in size
- The average upload rate of 0.2MB per second from the Data Collector VM to the Vyopta Data Receiver
- 10MB of Call Detail Records equates to ~1,000 Call Detail Records, per minute
The operating characteristics for Data Collection are highly variable – hourly call volume distribution, network topology, bandwidth, infrastructure location, infrastructure model/type, and utilization are all factors that will affect performance.
Note: Adding other infrastructure systems will further reduce the capacity of the Data Collector VM.