/
Solution Prerequisites
Document toolboxDocument toolbox

Solution Prerequisites

Owned by Sikander Hayat
Last updated: about an hour ago by Sikander Hayat
2 min read

The following are the prerequisites for setting up Voice recording solution under different deployment profiles. 

Hardware Sizing

Hardware Sizing

For up to 100 concurrent agents

  • For Operating System and services: 8 vCPU, 16 GB RAM, 200 GB HDD

  • For recording files: Disk Space (in bytes) = [Number of Calls × average duration (seconds)× bit rate /8] x 2
    for example;
    Calls in a month: 30000
    Average duration: 3 minutes = 180 seconds
    Bit rate for G711: 64 kbps
    So space required for one month of calls = (30000 x 180 x 64000/8) x 2 = 864000000000 bytes = ~ 80.46 GBs

Software Requirements

System Access Requirements

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

Network requirements

  • 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.

Port Utilisation

The local security policy and firewall should allow open communication on the following ports.

Type

Source Host

Port

Destination

Notes

Type

Source Host

Port

Destination

Notes

HTTPS

voice-recording-solution

444

any

To access VRS front-end







 Time Synchronisation

Communication between Voice Recording solution, Cisco CUCM, Cisco IP Phones (BIB enabled) carry timestamps. If the system dates and time are not synchronised the system can produce unpredictable results. Therefore, please make every effort to adhere to the following time synchronisation guidelines:

Voice Recording solution, Cisco CUCM, Cisco IP Phones (BIB enabled) should have their Time Zone and time configured properly according to the geographic region and synchronised. To configure the time zone, please see the instructions from the hardware or software manufacturer of NTP server. Voice Recording solution and Cisco CUCM should be synchronised to the second. This synchronisation should be maintained continuously and validated on a regular basis. For security reasons, Network Time Protocol (NTP) V 4.1+ is recommended.



Related content