by Uttam Pegu on February 21, 2010
What is Call Whisper ?
Call whisper, also known as call screening, is an advanced PBX feature for incoming calls which allows called party to know in voice which number caller has dialed. During ringing and before call s established, called party is “whispered” or informed in voice about the caller as well as what number the caller has dialed.
After hearing these information, the called party can either accept the call, or reject the call, or transfer the call to any other extension.
In a scenario, where call is routed to a single extension from different phone numbers, this feature is very useful. It allows the called party to know, which number the calling party has dialed, since every number may correspond to different department of the organisation or any other specific type of calls. The dialed number identification help the called party greet the calling party accordingly.
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by Uttam Pegu on February 15, 2010
There are many words which are specific to PBX or PABX, or widely used in PABX industry. I thought I would try to list them :
1. PABX, PBX, EPABX
2. ISDN
3. PRI
4. Line card
5. Power supply
6. Number of ports
7. number of lines
8. trunk
9. network
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by Uttam Pegu on February 11, 2010
IRIS IVDX is a very interesting telephone exchange from Coral Telecom Ltd., an Indian telephone exchange manufacturer. It is one of its kind as it can handle voice, data and video all simultaneously. With increasing demand in data exchange over telephone, where even voice is now
IRIS IVDX PABX from Coral Telecom
exchanged in nearly real time over data network ( VoIP), IRIS IVDX stands out in Indian PBX market with smart data features.
It is built on powerful 32 Bit RISC processor which can support upto 43000 ports, good enough for serving a small town. One of the important feature it incorporates is VoiP (voice over IP) where which allows direct connectivity between analog telephone with IP backbone.
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by Uttam Pegu on February 7, 2010
What is call hunting ?
“Call Hunting” is a facility in PABX or any Telephone exchange which allows an incoming call to be landed on any extension or telephone number in a group of extensions or telephone numbers. There will be one “pilot number” which will be dialed by any person, and any call to that “pilot number” would land on any of the free line in a group which belongs to the pilot number group.
For example, in a PABX, 6600 is a pilot number which has hunting feature. 6601 to 6620 number are in a group whose pilot number is 6600. Now anyone calling 6600 may land on any number 6601 to 6620 depending on which is free! These 6601 to 6602 can be called directly too.
How it works
Normally, any call to pilot number will land route the call to next free channel available the group. Or, the sequence of hunting the numbers in the group, aptly called “hunt group” can be programmed and configured by user. It differs from automatic call distribution in a way that, it does not use any algorithm where calls land on all group members uniformly. In Hunting Call, the call always land on the next free number in the hunting sequence programmed.
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by Uttam Pegu on February 2, 2010
What is call parking ?
Call parking is an interesting feature available in modern EPABX, also known as PBX(Private Branch Exchange), which allows a person to put an active call on hold and then retrieve the same call from another telephone number or extension.
Normally, this is activated by any of the parties, either calling party or called party, by pressing some special button/key available on the telephone instrument or few sequence of keys. After a call is parked, the parked, it can be retrieved or it can be again activated by dialing parked number from any other telephone extension in the same PBX.
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by Uttam Pegu on January 31, 2010
ACD ( Automatic Call distribution ) is one of the most useful feature in a telephony application which routes incoming calls to certain extension numbers in a PBX system, or group of numbers depending on parameters like caller ID, dialed number. Previously, ACD feature was a built in feature in a PBX but with its growing usage and complexity, now a days, it is implemented as a separate module or CTI feature. Still, there are many PBX in India, which have ACD as built in feature, though with limited capabilities.
Why ACD is required ?
ACD ( Automatic Call Distribution) is required where there are large number of incoming calls and limited number of people to attend those calls. Without ACD system in place, the calls will not be distributed to uniformly among the people who attend the incoming calls. In a call center or contact center, ACD is particularly required as all human agents needs to be equally divided with incoming calls.
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by Uttam Pegu on January 26, 2010
Though PBX itself is a complete equipment and can perform standalone, but it can also be connected to many other equipments like other PBX, computer, PSTN etc. With connecting two or more PBX together, it is possible to build a large private voice and data network spread over large geographical area.
The interfaces of a PBX machine could be divided as follows :-
1. Interface with other PBX or PSTN
a. PSTN analog line
PSTN analog lines could be used to connect “trunk lines” in a PBX. PSTN lines in turn could be used to establish voice call with any telephone number in the world.
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