case study : EPABX to next gen Haloocom IP PBX

Case Study: India’s Biggest Pharma Company – Converting Legacy EPABX To Next Gen Haloocom IP-PBX


India’s Biggest Pharma Company wanted to upgrade their units Telecom Infra from a Legacy Siemens EPABX system to an advanced IP PBX system with Unified Communication Capabilities. Haloocom IP PBX delivered a seamless integration with Siemens EPABX without disturbing their existing infrastructure, resulting in huge cost savings for the company. 

IP PBX is a complete telephony system and provides telephone calls over IP data networks. The major benefit of such an IP-based system is that it sends conversations as data packets over the Internet. This technology not only has a lot of advanced communication features but also provides a significant dose of worry-free scalability and robustness that all enterprises always look for.

Also, the IP PBX is able to connect to traditional PSTN lines via an optional gateway – so upgrading day-to-day business communication to this most advanced voice and data network is a breeze! The enterprises don’t need to disrupt their current external communication infrastructure and operations. 

With Haloocom IP PBX deployed, an enterprise can even keep its regular telephone numbers. This way, Haloocom  IP PBX switches local calls over the data network inside the enterprise and allows all users to share a certain number of external phone lines.


Over 1000 Extensions were connected to the Legacy Siemens EPABX & Customers wanted to upgrade to the latest technology of IP PBX. Transition process & Cost implications were the major challenges, considering that a large amount of investment was already made in the form of Telephone lines, cabling & devices. Transitioning to an IP PBX would mean a complete change in internal network cabling and investment in a new set of IP Phones that were 3 times the cost of a normal phone.


Haloocom IP PBX came in as a rescue in such an instance, by delivering seamless integration with Siemens EPABX without disturbing their existing infrastructure, resulting in huge cost savings to the company. 

An IP PBX for enterprise generally comes with a set of features like Computer Telephony Interface (CTI), Voice mail functionality, Auto-attendant, Interactive Voice Response System (IVRS), Automated SMS, and using these features can significantly improve client assistance services.


xchange architectureOur setup is implemented with our Haloocom IP PBX integrated with the Siemens EPABX via SIP trunk. Every FXS gateway (located on separate floors) is configured in the LAN for the conversion of analog signals to digital for the end-user. The E1 trunk lines are configured in EPABX and Haloocom for accessing the Inbound/Outbound calls. 


  • Huge Cost Saving: No disturbance to existing infrastructure, which the company had already invested a lot of money.
  • Access to Latest Features: With seamless integration with Haloocom IP PBX, all Analog extensions that were connected to Siemens EPABX were now able to access the latest features like :
    1. IVR
    2. Voicemail to Email
    3. Dial-in conference bridge
    4. Voice Recording
    5. CRM Integration
  • Access to Premium Features: All extensions that were connected to Siemens EPABX & the administrator were now able to access to Premium Features of Haloocom, like :
    1. Slack Telephony Integration
    2. Dial OUT Conference bridge
    3. Speech Recognition 
    4. Smart Extensions (Android & iOS)

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