PROTON 206/308 V1 System Manual
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Important Point:
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Maximum 80 virtual stations are possible.
Voice Mail Integration
What’s this?
Any VMS/Auto-Attendant can be integrated with a PBX. However this integration works well if the exchange of
information between the two is perfect. Generally, this integration works on two protocols: Tone Sensing and
Gateway. Tone Sensing relies on sensing of various Call Progress tones. Gateway uses DTMF digits to signify
various Call Progress events. Gateway is a PBX feature that is used by VMS/Auto-Attendant for a firm
integration. PROTON 206/308 provides this Gateway.
How to connect a VMS/Auto-Attendant to a PBX?
The port of VMS/Auto-Attendant should be connected to the station port of the PBX using a single pair
telephone cable. The figure given below shows connection of a VMS with a PBX where only two VMS ports are
interfaced with the PBX.
How it works?
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As shown in the figure, VMS is connected on two stations of the PBX. If all the calls are to be routed through
VMS, the PBX should be programmed such that all the incoming calls land on VMS. Alternatively, PBX
should be programmed such that incoming calls land on other stations.
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When an incoming call lands on the VMS, the VMS processes the call and guides the caller to reach the
desired station.
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As stated earlier, integration of PBX with VMS or an Auto-Attendant works on two protocols viz.Tone Sensing
and Gateway.
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Tone Sensing relies on sensing of various Call Progress tones. For example, when a VMS is interfaced with
the PBX, it senses the incoming ring and answers the call. It prompts the caller to dial an station number,
subsequently senses the dialed station number, keeps the caller on hold and dials the station number of
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the PBX where the call is to be diverted. Then the VMS waits for the ring back tone. It first senses the ring
back tone and then waits for it to stop. As soon as the ring back tone stops the VMS transfers the call to the
dialed station number. All this process involves sensing of various tones like ring back tone, hold tone, etc.
and hence is commonly called tone sensing. However this method is not accurate.
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To overcome this problem, Matrix PBXs (PROTON-206/PROTON-308) offers Gateway feature. However, for
latest knowledge on which model provides this feature, please call our channel partner or the Matrix Support
desk.
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Gateway uses DTMF digits to signify various Call Progress events. With Gateway mode, in the above
example when the VMS receives an incoming call, it answers the call. Then it prompts the caller to dial an
station number. It senses the dialed station number, keeps the caller on hold and dials the station number of
the PBX where the call is to be diverted. On successful receipt of the dialed station number, the PBX sends
a defined code (signifying ring back tone) to the VMS. Depending upon the transfer type set for the VMS, it
either transfers the call or waits for the called party to respond. In the latter case, when the called party
answers the call, the PBX again sends a defined code (signifying successful speech connection). The VMS
detects this code and transfers the call to the dialed station.
Summary of Contents for Proton 206
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