SIX MONTHS INDUSTRIAL TRAINING REPORT BY   VIVEK THAKUR UNIV ROLL NO.80503108132

ELECTRONICS PRIVATE AUTAMATIC BRANCH EXCHANGE SYSTEM .

. EAPBX interface with phones and provide power to operate and ring the phone.It also interfaces with other pbx or to other devices. The interface with the phone is called subcriber side and interface with PBX is called the trunk side.

EPABX System Components Internal Switching Network Microcontroller or Microcomputer for Data Processing Logic cards Power cards Line cards

EPABX System Cabinents This cabinet can take two shelves of 28 slots each or one shelf of 28 slot and two shelves of 14 slots. In each shelf (14 or 28 slots) two slots are used for control boards remaining slots are universal slots and each supports 32 ports.

Interfacing Standard ISDN PRI- Runs over E1, 30 bearer channels + 1 signalling channel Internet Protocol -H.323, SIP and MGCP protocols are IP based solutions which can handle voice and multimedia (e.g. video) calls DECT - a standard for connecting cordless phones

CURRENTLY USED EAPBX SYSTEM IP EAPBX

Why do you need an IP PBX ? Any IP telephony setup that is for more than two or three lines needs a switching system to make it more efficient, allow internal calling and switching between users and to provide more advanced features like voicemail, call forwarding, call hold, conferencing and more

VOICE OVER IP (VoIP) Voice over IP (VoIP) is a communication protocols, and transmission techniques for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks. It is used synonymously with VoIP are IP telephony, Internet telephony, voice over broadband (VoBB), broadband telephony, and broadband phone

VOIP Protocol H.323 2. Session initiation protocol( SIP) 3. media gateway controller protocol(MGCP)

SESSION INITIATION PROTOCOL (SIP) SIP is an IETF standard protocol for establishing, manipulating and tearing down an interactive user session that involves multimedia element such as audio, video, instant messaging or other real time data communication.SIP is a request-response protocol that works in application layer of the OSI.

Basic SIP Components User Agents (UAs) SIP Location Server SIP Redirect Server SIP Proxy Server •SIP Gateway

H.323 H.323 is a ITU standard protocol that specified the components, protocols and procedures real time audio, video and data communication over packed network including internet protocol based network H.323 is explained with an emphasis on gateway and gatekeepers which are components of H.323 network.

Elements of an H.323 System Terminals Multipoint Control Units (MCUs) Gateways Gatekeeper

Media gateway controller protocol Media gateway control protocols were born out of the need for IP networks to interwork with traditional telephony systems and enable support of large-scale phone-to-phone deployments Media gateway control protocols provide remote control of media streams as they transit between IP and traditional telephone networks

HOW IPPBX WORK co A VOIP Phone System / IP PBX system consists of one or more SIP phones / VOIP phones, an IP PBX server and optionally includes a VOIP Gateway. The IP PBX server is similar to a proxy server: SIP clients, being either soft phones phones or hardware based phone, register with the IP PBX server, and when they wish to make a call they ask the IP PBX to establish the connection. The IP PBX has a directory of all phones/users and their corresponding SIP address and thus is able to connect an internal call or route an external call via either a VOIP gateway or a VOIP service provider.respondingSIP address and thus is able to connect an internal call or route an external call via either a VOIP gateway or a VOIP service provider

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Multi Location Overview

MAIN FUNCTIONING OF EPABX SYSTEM Automated attendant - An automatic system to answer phones Voicemail and voice mailboxes - More advanced features would include the ability to record ALL incoming and outgoing conversations automatically Conferencing - Allows the caller and other parties to speak together on one connection. Call Transfer - Transfer enables a user to forward an incoming call to another telephone or extension.

. Call Park - When a call is placed in “park” it is put on hold at a specific extension number to be resumed by someone at another phone. That person can pick up the call by keying the displayed extension number. If no one is available to take the call at the other location, it will “ring back" to the original extension alerting the person who originally parked the call. Blacklist - Prevents callers from making outgoing calls but allows them to receive incoming calls. Call forwarding - Automatic, programmed or manual call forwarding to any number

. Call hold - Placing callers properly on hold with no drop off in queues and programmable options about handling hold time length. Call forwarding - Automatic, programmed or manual call forwarding to any number

BENEFITS OF AN IP PBX \ VOIP PHONE SYSTEM Much easier to install & configure than a proprietary phone system . Easier to manage because of web/GUI based configuration interface . Significant cost savings using VoIP providers . No need for separate phone wiring can use computer network. Eliminate vendor lock in . Scalability , just add more phones to your network to expand! Better customer service and productivity . Twice the phone system features for half the price . More features included as standard. Better control via better reporting. Better overview of current system status and calls. Allow users to hot plug their phone anywhere in the office

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