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PBX System
What is it?
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PBX is a private telephone network used within a company.
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It is a telephone system which allows the telephone lines to be shared by more than one person.
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Allowing all users to share a certain number of external phone lines.
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The PBX itself typically lives in an office's telecom closet.
PBX
Private Branch Exchange



P
B
X

040 6459 1818
(Phone number)
PSTN


Inside the office
Outside the office
You can use it to build your own, internal, telephone services.
What does a PBX?
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Allow free phone communication within the organization by dialing its assigned number.
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Every phone is assigned an extension number. (eg. #2)

PBX Provider

040 6459 1818
(Phone number)




#2
#3
#4
P
B
X
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Ensure good interface with customers through features like call recording, voicemail, IVR etc.
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Use of more than one telephone line in an organization, and management of outgoing and incoming calls.

P
B
X

PBX Provider

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Allow free phone communication within the organization.
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Ensure good interface with customers through features like call recording, voicemail, IVR etc.
PBX vs IP PBX
PBX
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Analog voice is converted into binary (0s &1s) and then transferred through digital lines.
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Can be connected to analog phone & digital phone.
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Require both a voice and data cable.

RJ 11
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International call rate higher.
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Good for SMBs.
IP PBX
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Analog voice is converted into digital & sliced into many packets to be sent.
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Can be connected to an analog phone, digital phone & VoIP phone.
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VoIP phone plugged into an Ethernet.

RJ 45
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Call rate is lower or free because it uses the internet.
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Good for SMBs and Large companies.
Features
Here is some extra feature which is not in the normal telephone system.
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Extension dialing.
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Customer waiting queues
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Music on hold.
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Simultaneous calls over the same phone number.
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Call conferencing.
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More efficient way to operate in office.
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