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EPABX (Intercom Telephone System)
EPABX (Electronic Private Automatic Branch Exchange) EPABX is an electronic device used in Offices, Hotels, Industries and many other places for voice communication. It is independent and can work with out any trunk lines (service providers)

The main features offered by any EPABX system are: 1. Call transfer 2. Call pick up 3. Call back up 4. Conference 5. Barge-in etc.

The system mainly contains: 1. PSU (Power Supply Unit) 2. CPU (Central Processing Unit) 3. EC (Extension Cards) 4. LC (Line Card or Trunk Card)(Optional) 5. PRI (Primary Rate Interface or Digital Trunk Card)(Optional) etc. All these are assembled in a Cabinet.

Top EPABX companies in India:

MNC branded EPABX companies

1. AVAYA GlobalConnect Most probably, the biggest MNC EPABX player in India. They focus more into enterprise business. They have created their own dealer network all over India. They sell many voice networks, unified messaging solutions, call center etc.

2. Samsung The electronics major manufactures EPABX too and they sell in India too. HCL ( Hindustan Computers Limited) is Samsung distributor in India which provides all kinds of EPABX right from analog to digital TDM switches.

3. Alcatel Alcatel also sells varous EPABX, PBX machines in India through their dealers, value added resellers all over India.

4. Ericcson ( Now AASTRA) AASTRA sells their EPABX in India through HCL Infosystem ltd. HCL has dealer in all over India.

5. Siemens Siemens India is Siemens subsidiary in India. They also have their own dealer network to sell their EPABX and various voice networking solutions.

6. Tadiran Telecom Tadiran is Isreal based MNC selling their EPABX systems in India for long time now. They are tied up with HCL infosystem and BPL telecom.

7. Karrel Karrel is US based EPABX manufacturer selling PBX systems in India through their distributor Intellicon Pvt. Limited based in Ahmedabad, Gujarat.

8. Panasonic Panasonic is another MNC brand selling all over India though their own network.

9. NEC NEC has tied up with Syntel, Arbidn Mills Telecom divison and sells all kinds of EPABX equipments.

Domestic Indian EPABX companies

1. Coral Telecom Coral Telecom seems to be the biggest EPABX company in India now with products ranging from small analog PBX to large VoIP based switches. It has large clients in BSNL, Indian Railways, government departments, Public Sector units, Defence forces. Head quartered in Noida, India, it has now offices in other countries too.

2. Accord It is another EPABX manufacturing company selling various small to large PABX machines throughout India. Based in Meerut and they have branch offices all over India.

4. Matrix Matrix might be the second largest Indian EPABX company. They have many EPABX products, analog and digital. They have large customer base and has offices all over India. Matrix is well known EPABX brand in India.

5. Centrex Telecom Centrex is Hyderabad based company with offices in many cities in India. They mainly manufacture low end analog EPABX systems.

6. Crystal Digital Concepts Crystal is another EPABX company in India which manufacture and sell analog and digital EPABX systems with GSM connectivity. They too sell directly with their offices in various cities in India.

7. Syntel Telecom Syntel is telecom division of well known company Arbind Mills Limited. They have been manufacturing smaller EPABX machines and sold many EPABX to Indian Army. They have tied up with NEC for high end EPABX systems.