• Phone System Offers
  • Nortel BCM to Avaya IP Office
  • 6 User Small Office Phone System Bundle
  • 10 User Digital Office Phone System Bundle
  • 10 User IP Office Phone System Bundle
  • 25 User Business Phone System Bundle
  • 50 User Business Phone System Bundle
  • 100 User Phone System Bundle
  • 200 User Phone System Bundle
  • ISDN Phone Systems
  • Telephone System Migrations
    • Nortel Phone System
    • Avaya IP400 System
    • InDEX Phone System
    • Aastra Phone System
    • BT Meridian Phone System
    • BT Norstar Phone System
    • Siemens Phone System
    • Ericsson Phone System
• Phone Systems
  • Avaya Telephone Systems
    • Avaya IP Office IP 500
    • Avaya Communication Manager
  • Avaya Call Centres
  • Mitel Telephone Systems
    • Mitel 3300
  • Small Business Phone Systems
• Phone System Addons
  • Zeacom IP Office Contact Centre & Call Centre
  • Rostrum Outbound Dialer for Avaya IP Office
  • IP Office CRM Integration
  • IP Office Call Management Software
  • IP Office Entryphone Systems
  • IP Office On Hold Music
  • IP Office Call Logging
  • IP Office Call Recording
  • IP Office WiFi & IP DECT
  • Avaya Voicemail Pro
  • Avaya Customer Call Reporter
  • Avaya Auto Attendant
• Telephones
  • Avaya IP Office Phones
  • Avaya Communication Manager Phones
  • Mitel 3300 Phones
• Headsets
  • Avaya IP Office Headsets
  • Avaya Communication Manager Headsets
  • Mitel 3300 Headsets
• Connectivity
  • Business ISDN30
  • Business ISDN2
  • ISDN
  • Business ADSL
  • Business ADSL2+
  • Business SDSL
  • Business MPLS
  • Leased Lines
• IT Integration
  • CCTV Systems
  • IT Security
  • Disaster Recovery
  • Network Design
  • Managed Datacentres
  • Anti-Virus Services
  • Anti-Spam Services
• Phone System Support
• Case Studies

DTMF Keypad Support Allows ONS/OPS extensions use all 16 keys on a 4x4 DTMF keypad.

The additional row of four keys (ABCD) is used to access features in the system.

If people call your set while DND is activated, they hear a special busy tone.

Mitel 3300 Phone System A-Z