all pBX features that it can support

PBX features
A list of features a PBX might support:

Please help us explain all these functions - or add other functions!
Also, edit the descriptions and add examples of how to achieve each function in Asterisk, either system wide or per channel type depending on the function.


Account Code: Account code for dialing calls
Alternate Number Ring: Assign a different number to same line that rings with a different cadence
Attendant: Main Operator extension
Autodialer: Support multiple autodialing techniques
Automatic Attendant
PBX Automatic Line Selection
Automatic Hold
PBX Automatic Redial
Automated directory: Automatically connect to an extension by name
Automatic Call Distribution: ACD
Barge-In: Allow an extension to break into a call at another extension
Billed Calls Only: Outgoing calls must be collect or 3rd-party billed
Boss-secretary functions: The boss'es phone and the secretary's phone are linked togheter
PBX Busy Ring
Call Back
Call Center: Organizations using PBX technology
Call Forwarding: Redirects all incoming calls towards other extension
Call Monitoring
Call Recording
Call Return: ??
Call Through: Service for savings on local interconnect charges
Call Transfer: Hand a call off to another extension
Call Trace: mark a call in system logs as requiring tracing or special attention
Call Park: Place a call on hold and allow anyone to dial an extension and take the call
Call Pickup: Take a parked call off hold
Call Waiting: Receive a tone indicating another call is waiting for attention
Calling ID: Identify (or block identification) of caller's phone number or phone number and name
PBX Calling Plans
Camp On
Computer Telephony: technology encompassing many PBX features
Conference Call: Allow 3 or more parties to connect together
Consultation Hold: Allow caller to be put on hold while user calls another extension
PBX Custom Greeting: Change announcement according to special criteria
PBX Custom Menus: Customized option menus for an automated attendant
Device Inventory
PBX Direct Inward System Access: In short: DISA
Direct Line, HOT line or Private Line Automatic Ringdown: connects directly to another extension (might be the operator) when phone is taken off hook
Disable Call Waiting: Prevent call waiting for one call
Do Not Disturb: In short: DND
Extension Dialing: Dial a number on the system with only 1, 2, 3, 4 or 5 digits
Extension Mobility: Sometimes known as extension roaming
PBX Failure Alarm: Rings a remote alarm if the PBX fails
Fax on Demand: Allow the user to be given a fax
Follow Me: have calls automatically transferred elsewhere
Forward on Busy/No Answer transfer if line is in use or doesn't answer
Hunt Groups: transfer a busy number to another extension
PBX Hold: Allow a call to be kept in the system when hanging up
PBX Incoming Only: Line cannot dial out
Incoming Queue: Place incoming calls in a wait list to be answered
Interactive Voice Response; Automatic call answering and routing
intercom: solves the problem of yelling to your secretary thru the wall.
IP Telephony: VoIP calling
Last Number Redial: dial a code to call the last (regular) number dialed
Least Cost Routing: routes calls from fixed-to-mobile via cheaper mobile-to-mobile calls.
Location-Based Routing: Route an incoming call dependent on where the caller is (ANI application)
Message Waiting Indicator: MWI
Mobility Extension (Mobex): for connecting mobile phones and other external telephony devices to the PBX.
PBX Music on Hold: play music or a recording while the caller is on hold
Night Answer: change where calls go if line is placed in 'night service'
Non Supervise: Line that can answer without giving supervision allowing a non-charged call.
PBX Outgoing Only: Line cannot receive calls
PBX Override Line: Allow a higher-priority user to seize use of a trunk for outgoing call
PBX Performance Measurements
Predictive Dialing - Automatically dial numbers connecting live answers to agents
Public Address - Similar to intercom but uses an external audio system. Example, overhead paging in a warehouse environment.
Restricted extension: Extension cannot be dialed from outside line or some or all inside extensions
Screen Pop
PBX Series Completion
PBX Sieze Call: Allow an extension to take a call from another extension and disconnect the other extension
Skill Based Routing
SMS Server: Sending and receiving SMSs on the PC, multiple sending, sending to a closed user group..
Softphone: Embedded PBX features in web or PC applications
Speed Dial: ??
Three Way Calling
PBX Toll Restriction: Limit calls to certain numbers
Voice Messaging: voice mail and give greeting / announcements
Voice Broadcasting: Send recorded phone messages
Visual Phone Dialer: Visual interface for handling, viewing and monitoring all desk phone call activity from the PC
Voice Portal:
Wake-up Call: Automatically send wake up calls
Web-Based MACs