ABox Voice over IP Adapter (VoIP)
The difference between traditional telephony and Internet telephony lies in the way calls are transmitted. Instead of going via a "normal" analog or ISDN line, the Internet connection is used (Voice over IP).
There are many providers who offer VoIP solutions, enabling Internet telephony via a DSL line at very little cost or no cost at all. These providers assign you a specific number that allows you to make and receive calls on a landline.
All providers offer so-called ATAs (analog telephone adapters), which are required to connect a traditional analog telephone to a DSL modem or router.
Sounds good, but there's one problem: If you're already using a convenient PBX system with extensions, you will no longer be able to benefit from low-cost Internet telephony when calling from one of the normal extensions. And you will no longer have the switchboard features.
Internet telephony (VoIP) using an existing PBX system
When a call is received from the Internet, the Box answers it and routes it to the correct internal extension or group. To call from an extension via the Web, simply dial the extension connected to the Box for an outside line, followed by the number you wish to call.
Internet telephony (VoIP) using an existing DECT system
When a call is received from the Internet, the Box answers it and routes it to the correct extension or group of the cordless system. To call from an extension via the Web, simply dial the extension connected to the Box for an outside line, followed by the number you wish to call.
Call Through for Internet telephony from a mobile network
An external mobile phone user calls the number of the phone system at home. If the number of this mobile phone user has the authorisation for Call Through the phone system will accept this call. Afterwards the extension of the Box can be called (e.g. 35) followed by the number you wish to call.
Call Through for low-cost calls from a mobile network to a landline
Connect the Box to two free analog extensions of your PBX system. An external mobile phone user calls the number of the phone system at home. Using the internal call allocation, the Box is called on the first extension and answers immediately. You can hear the internal dialling tone of the second extension. Using DTMF post-dialling, you can now call an internal extension or an outside number using the cheaper fixed network tariffs. Additional cost savings are possible if the phone system has Least Cost Routing.
System linking
Connect the Box to one internal analog port of each system. To reach a subscriber on the other system just dial the extension of the connected Box first and afterwards the number of the subscriber connected to the other system.
