BT ITS recording network requirements

Owned by Gabor Moczar
Nov 21, 2019
1 min read

BT ITS recording has very specific requirements for the network. Below you can find the key requirements. For more detailed information, contact your BT representative.

  • Separate Network connections: i.e., Management NIC, IPSI LAN A NIC and IPSI LAN B NIC.  Teaming is not supported and it is recommended separate physical connections are used for VM Hosts.
  • Sufficient network bandwidth must be provided for the number of TTPs and Management traffic.  Since TTPs do not use a VAD codec, silence is always present and therefore a continuous 32 channel voice stream for each TTP.
  • Minimal network hops: the factory default IPSI heartbeat TTP Voice LAN settings are required to ensure reliable voice delivery and it is not recommended they be adjusted. 
  • NetBIOS must be disabled on all LANs that the recorder components are connected to, except the Management LAN. Specifically, this means the Voice LAN. The reason for this is that server names would be resolved on the Voice LAN and that would break the fault-tolerant model, i.e., when Management LAN cable is removed, the Unified Recorder or Director is still accessible via the Voice LAN. Access Control Lists (ACLs) might need to be put in place to prevent this. No Default Gateway must be configured for any recorder Voice LAN NICs.
  • Maximum 64 TTPs can be allocated to a single recorder. The system is distributing the TTPs across the Media Recorders evenly by default. The system can be configured to assign specific TTPs to specific Media Recorders. In either case, a single Media Recorder will be only assigned to maximum 64 TTPs by the Recording Director.