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5.1 Guidelines for Inband Integration
152 Installation Manual
5.1 Guidelines for Inband Integration
5.1.1 What is Inband Integration?
In order for the VPS to function, it must be integrated with the PBX it serves. The type of integration
that is used determines how voice (caller messages, VPS prompts, etc.) and data (extension status,
button presses, etc.) are sent between the VPS and the PBX.
When the VPS and PBX use Inband Integration, voices are sent using analogue technology, and data
is sent using analogue DTMF tones.
The PBX informs the VPS of the status of extensions by sending DTMF tones and Call Progress
tones to the VPS. Similar to an extension user, the VPS places calls by going off-hook and dialling
numbers. It starts call transfers with a hookswitch flash to put callers on hold and then dials the
extension number, just like an extension user.
Signals Sent Between the PBX and VPS
5.1.2 When to Use Inband Integration
The type of PBX and/or the type of extension cards installed in the PBX will determine whether Inband
Integration should be used. Generally, if the VPS is connected to an APT/DPT Integration compatible
Panasonic PBX, APT/DPT Integration—not Inband Integration—is the ideal integration method. See
1.1.7 Compatible PBXs for more information.
Note
• Certain VPS features are not available when using Inband Integration.
• Availability of VPS features depend on the PBX being used.
5.1.3 PBX Requirements for Inband Integration
The type of VPS, PBX, and PBX extension cards used will determine the availability of certain
features. In order to use the features described in this section, you may need to test the PBX for
compatibility or refer to the documentation included with the PBX.
Single Line (Tip/Ring) Port Circuits
The VPS can only be connected to PBX extension jacks that support standard single line telephones
(SLTs). Some PBXs need an OPX card to provide this connection. However, some OPX cards do
not provide all the capabilities listed in this section.
PBX to VPS
VPS to PBX
Call Progress Tones
• ringback
• busy
• reorder
DTMF tones
SLT Signals
• on/off hook
• hookswitch flash
DTMF tones