Solution Prerequisites

For up to 100 concurrent agents

Storage calculation formula:

• Disk Space (in bytes) = (Number of Calls × average duration (seconds)× bit rate) / 8
  for example;
  Calls in a month: 30000
  Average duration: 3 minutes = 180 seconds
  Bit rate for G711: 64 kbps
  So storage required for one month of calls = (30000 x 180 x 64000) / 8 = 432000000000 bytes = ~ 40.2 GBs

Standalone

• For the operating system and services, 8 vCPU, 16 GB RAM, and 200 GB HD are used for application installation.

• For Recording Files: Calculate storage based on the formula above

For HA

• Two VMs for Recorder 1 and Recorder 2. 8 vCPU, 16 GB RAM, and 200 GB HD are used for application installation.

  • Storage on Recorder: 10 days of storage space is required based on the above formula

• VM for Replay server: 4 vCPU, 8 GB RAM, 200 GB HD

  • Storage for Replay server: An NFS or physical drive should be attached to the Replay server which will hold the actual call recordings from both Recorder 1 and Recorder 2. The actual storage should be calculated based on the above formula.

• Host Operating System - Debian 12

• SQL Server 2019-2022 (Only for Cisco). The customer/partner will be responsible for providing the SQL Server instance, it backup, and high availability.

• Docker Community Edition 18+

• Docker Compose 2.15.1

• Git Client 1.8+

• FusionPBX (Only for EFCX)

• The host machine's administrative privileges (root) are required to proceed with installation.

• Latency: < 100 ms: One-way latency within this range helps maintain natural conversation flow without noticeable delays. Lower latency is critical for real-time communication.

• Minimum Bandwidth: Approximately 150 kbps per stream.

HTTPS

voice-recording-solution

443

any

To access VRS front-end

TCP

Cisco Call Manager

5060

VRS Recorder 1 and Recorder 2

To allow SIP traffic to VRS recorders

UDP

Cisco

16386-32768

VRS Recorder 1 and Recorder 2

To allow rtp packets to VRS recorders for audio recording

TCP

VRS recorders and Replay server (in case of HA)

1433 (or the custom SQL server port)

SQL Server cluster

To allow database connectivity