It is a full communication system designed specifically for handling callers from your Analog, VoIP / SIP telephone lines, PRI lines or PSTN (Public Switched Telephone Service, also known as POTS - Plain Old Telephone Line Service)...
Today's business PBX phone systems allow for a host of integrated features to expand your company telecommunication options.
Today's phone systems include integrated options for connectivity using both POTS (Plain Old Telephone Service) along side VoIP - Voice over IP (AKA: SIP - Session Initiated Protocol) telephone line services. Other common options include PRI (Primary Rate Interface) lines which are end to end digital ciruit lines.
There a usually two componants to a Telephone System Network:
► The main PBX Box.
► The telephones - or end-user client devices which may include a mixture of: Office desk phones, remote phones, mobile phone app integration and SIP/or softphone applications.
PBX Phone Systems today also expand and enhance the way we communicate with new integrated features like PC and Mobile Device connects, conference scheduling and collaboration options, and many many more options as programming and IP / Network / Internet technologies change.
Options and capabilities on newer phone systems are not just limited to connecting telephone lines - they help connect people in your company around the world faster, and in new techologically reliable ways!
Today's systems come with a host of multiple options with advantages and disadvantages associated with each platform.
"On premises PBX" Phone System means your hardware (and software) is physically kept in your office and your telephone line service comes in via various methods. "Demarcation" is associated with your physical telephone wired service coming into the building at a junction point - and is hard wired into your phone system. Or, you can have your line service come in through VoIP or PRI services direct to your phone system.
"Hosted PBX" means - the main hardware box is located off premises at a provider's site, and you connect using authenticated SIP desk phones or software designed to communicate direct to that service providers networked solution.
On premises is still the preferred method by most small, medium (SMB) and large corporate businesses - keeping your company's telecommunications in house avoids downtime or other critical problems associated with hosted PBX Solutions, including: loss of power, internet downtime and other technical factors that can affect your day-to-day operations.
Using your own system in house also means you are NOT limited to growth and have FULL ACCESS to an abundance of your features not provided in hosted PBX solutions...
Call Center controls
IVR (Interactive Voice Recorded) Auto-Attendant - Multilevel
Conference Scheduling / Conference Bridge
Multi-Branch / Office Peering
Music On Hold
Live Call Recording Server
Call Monitor: Whisper / Listen / Barge
Allows Multiple Endpoint registration per user
Time of Day / Scheduling Modes
Customized Outbound Calling Rules
Ring Groups / Extension Groups
Call Park / Unpark Orbit
Company Directory - Dial-by-name
Voicemail to email (with sound file)
Regular and Vacation Voicemail
Call forward / Call Busy Forwarding
FOLLOW-ME call routing features
DND-Do Not Disturb
Auto-record Live Calls
Time of Day / Scheduling Modes
Concurrent end-point SIP Registrations per extension allowed
Ring simultaneous locations
Internal and External Extensions
Remote Worker Extensions
Restricted Use Extensions
Enable / Disable Extension
SIP Video - depending on phone model
Paging / Intercom functions
Plus many more - usually Hosted PBX solutions will LIMIT many functions and feature access and charge you accordingly for adding functions available to you.