V1 VoIP offers cloud hosted PBX services and solutions for resellers. PBX is an abbreviation for Private Branch Exchange, a private telephone network used within an enterprise. Users of PBX share a certain number of outside lines for making telephone calls external to the PBX. Most medium-sized and larger companies use a PBX because it’s much less expensive than connecting an external telephone line to every telephone in the organization. In addition, it’s easier to call someone within a PBX because the number you need to dial is typically just 3 or 4 digits.
If you are new to VoIP PBX, here is a list of terms that V1 VoIP feels you should familiarize yourself with:
Free, open-source software that runs under Linux, Mac OS X, and several variants of Unix on computers powered by x86, PowerPC, and other processor types. Provides PBX capabilities for VoIP and (with appropriate interconnection hardware) digital and analog telephone systems.
Phone feature that transfers calls to the appropriate destination (an extension, voice mail, or recording, for example) without human intervention, by prompting callers to press buttons on their phone keypads or give voice responses such as “yes” or “no.”
Automatic callback. This term can refer to a PBX feature that lets employees calling from outside the office avoid long-distance charges. The employee places a short call to the PBX, which calls the individual back using an inexpensive (VoIP) calling plan. Confusingly, the term also refers to a feature that sets a phone to make multiple attempts to reach an unavailable number, alerting the caller when a connection is finally made.
Phone feature that allows a third party to break into a phone conversation.
Calling rules. Policies, put in place by the administrator, that determine how the PBX handles incoming and outgoing calls. Some systems let the administrator give users control over subsets of calling rules for their own extensions.
DISA (direct inward system access)
Service provided by PBX systems that lets authorized personnel dial into the PBX from external phones, so they can, for example, place calls through the PBX.
The means by which a PBX parcels out the use of a single telco line to two or more phones in an organization. Each phone has its own number, but actually shares the same telco line. Calls between extensions go through the PBX without tying up an external phone line.
“A standardized implementation of Asterisk that gives you a GUI to manage your system” (definition from freepbx.org). FreePBX gives you a fully functional PBX, saving you the extensive configuration work Asterisk requires.
IAX (inter-Asterisk exchange)
VoIP signaling protocol that provides for control and transmission of streaming media over IP networks. It enables connections between Asterisk servers as well as between servers and clients.
IP PBX (Internet Protocol private branch exchange)
A system that, by using the Internet Protocol over Ethernet networks, provides the same functions as, and often extends the capabilities offered by, traditional PBX installations.
IVR (interactive voice response). The part of an auto attendant system that provides voice prompts and information to callers and takes action based on the buttons they press on their phone keypads or their spoken answers.
PBX (private branch exchange)
Equipment, located in-house, that connects telephones within an organization to one another and with the external telephone network maintained by the telephone company. The PBX provides call routing, services (such as call forwarding and voice mail), and reporting. It also allows multiple users to share trunk lines.
All the tasks necessary to provide a user or an organization with telecommunications service; may be automated, so as to function with no assistance from a person.
A set of extensions that the PBX rings in the order determined by rules the administrator sets.
SIP (session initiation protocol). A set of IP telephony signaling conventions, mostly used for VoIP, but usable for electronic delivery of any multimedia type.
The generally high-bandwidth communications links connecting two switching systems, such as the one at the telephone company central office and a PBX or between PBX systems. A trunk line carries many voice and data signals simultaneously.
An IP PBX’s process of merging data from multiple calls into a single set of packets to reduce transmission overhead.
VoIP (Voice over Internet Protocol)
A method of delivering telephone communications over computer networks that exchange information according to transmission rules governing the predominant worldwide network (the Internet).