What is Port Mirroring?
Port mirroring is a method of monitoring network traffic. On the majority of IP telephony systems, CallRex Call Recording software records and monitors calls by sniffing packets on the data network. In order to sniff the packets on the network, port mirroring must be set-up on the data switch.
When enabled, port mirroring will send a copy of every packet destined for a particular port to a second port. For CallRex users, this means that a copy of the telephone traffic is sent from the PBX through the data switch to both the CallRex Server and the IP-enabled telephone.
Port mirroring must be set-up prior to installing CallRex software. If you are uncomfortable setting up port mirroring in your environment, contact your preferred Telrex reseller for assistance.
Learn more about port mirroring:
- Port Mirroring for CallRex (includes diagrams and additional technical information)
- Wikipedia’s definition of port mirroring
- Understanding Port Mirroring