CallRex Professional: IP Call Recording & Monitoring for Businesses and Contact Centers Contact Telrex Request Free Evaluation Software

CallRex Customers

  • Upstate New York Transplant Services "We use CallRex call recordings to train staff on live calls, allowing them to get a glimpse of 'real-life' situations."
    - Margaret Cosentino,
    VP, Information Services, UNYTS
  • "Since we have moved to CallRex call recording, we have not had a major technical issue, the product has proven to be very user-friendly and easy to administer and support."

    - Elizabeth Beasley, Director, Ambulatory Access Center, University Physicians
  • Engineered Protection Systems "CallRex is rock solid for recording calls, and it worked perfectly from the beginning."

    - Eric Hoskinson,
    director of technology, Engineered Protection Systems, Inc.

  • "CallRex is very easy to use. The software has proven to be a turnkey solution for us."


  • "CallRex makes us successful because managers are able to retrieve and listen to calls and quickly identify problems."

    - Dawn Eastwood,
    director of IT, Keany Produce
  • "We looked at a lot of different solutions, and CallRex had all of the features that we were looking for. CallRex software is easy and intuitive."
    - Drew Clauson,
    president, Kindred Partners

  • "Our CallRex investment will pay for itself in the time saved by the management staff."

    - Susan Milne, Operations Manager, Healthy Mothers, Healthy Babies Coalition of Georgia
  • U.S. Oil Co., Inc. "CallRex has been priceless in helping us to bring accountability to the dispute resolution process."
  • "We chose to move to CallRex call recording software because it was a proven, certified solution for our ShoreTel system, and the solution was very cost effective."

    - Don Gregory, Information Technology Manager, United Supply Co.
  • Colorado Department of Corrections "I recommended CallRex for its ability to record and monitor IP calls and for its affordability."

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Scalable IP Call Recording and Monitoring Software Solution

CallRex features the innovative distributed-services software architecture for enterprise scalability, high reliability and ease of use.

  • Runs on Windows Server 2003 and XP Pro
  • Licensed on a per IP phone basis
  • Monitors VoIP traffic on the network via port mirroring at the data switch
  • Requires no physical integration with the IP PBX
  • Simplified solution, easy to deploy and easy to manage
  • High quality voice recordings with highly compressed files
  • 97.5 KBs per minute / 171 hours per Gigabyte / 17,100 hours per 100GB hard drive
  • CallRex software runs on a dedicated server. Contact your Telrex representative for complete server specifications.

VoIP Call Recording and Monitoring

CallRex IP call recording and monitoring software is unique. By using innovative packet sniffing technology, CallRex call center software records and monitors calls without interfering with the IP telephony system. CallRex monitors VoIP packets via port mirroring on the data switch connected to the IP PBX. Every VoIP packet that goes to and from the IP PBX is copied to the CallRex Server, which then reassembles the packets into a recorded call and compresses and stores the recorded call for later retrieval.

CallRex Call Recording™ software has two components: the CallRex Server and the CallRex Client. CallRex Servers coordinate all recording and monitoring. Call recordings can be stored on the local server, transferred to a central server (for multi-server deployments) or stored on network attached storage (NAS) or on a storage area network (SAN).

CallRex Client

The CallRex Client is for managers, end-users, system administrators and others who monitor activity and configure who will be recorded and under which circumstances.

Based on assigned access rights, the CallRex Client enables adding users, retrieving calls, monitoring calls in real-time, and administering CallRex. While the CallRex Client can be installed on any computer on the network, it is typically installed on the computers of administrators and managers. View short online video demonstrations of the call recording interface.

All CallRex Client features are accessible through the CallRex API™, meaning CallRex call center optimization functionality can be integrated directly into other applications used by your organization.

Scalable Call Center Software Solution

CallRex Call Recording is designed to scale across multiple sites and thousands of users. CallRex Call Recording utilizes the WAN infrastructure to link a central CallRex Server with distributed CallRex Call Recording Servers, known as Data Collectors, deployed in remote sites.

Remote sites must have their own local dial tone and trunking.

Single Site Diagram

CallRex Professional single site diagram

Multi-Site Diagram

CallRex Professional multiple site diagram

Learn more about CallRex IP call recording and monitoring software:

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