Wireless Voice Over IP

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Across
  1. 1. The Hardware connection of a device.
  2. 4. Phone numbers or commands can be placed on speed dial keys of the telephone, allowing to call them by pressing a single key.
  3. 5. puts incoming calls in line until someone is available and typically plays on-hold music to the callers in the meantime.
  4. 7. Manufacturer of VoIP phones and other devices
  5. 8. Frequent synonym for being disconnected and consequently unreachable
  6. 9. Integration of multiple computers or other IP devices that share common services and resources and can therefore communicate with each other
Down
  1. 2. Frequent synonym for being connected and consequently reachable
  2. 3. Communication device, transmitting sounds, languages and video. Available for different transmission techniques such as SIP, ISDN and analog.
  3. 6. A Software that automatically takes calls and provides the opportunity to the caller to leave a voicemail for the callee.