If you are looking to buy a PBX, then here are certain generally accepted PBX features to look for.
- Call Hold
- Music on Hold
- Call Forwarding
- Call Recording
- No Answer Call Forwarding
- Busy call forwarding
- Unattended transfer
- Attended transfer
- Automatic attendant
- Screen pop
- PBX series completion
- Direct transfer to voicemail
- Bridged appearance
- Three way calling
- Incoming call screening
- Outgoing call screening
- Find-me service
- Call pickup
- Call parking
- Automatic redials
- PBX Toll Restriction
- Voice Messaging
- Message Waiting Indicator
- IP Telephony: VoIP calling
- PBX Direct Inward System Access (DISA)
- Extension Dialling
- Extension Mobility, also known as extension roaming
- PBX Calling Plans
- Camp On
- Computer technology encompassing many PBX features
- Conference Call to allow 3 or more parties to connect together
- Consultation Hold for allowing caller to be put on hold while user calls another extension
- PBX Custom Greeting for changing announcement according to special criteria
- PBX Custom Menus for an automated attendant