5.1 Guidelines for Inband Integration152 Installation Manual5.1 Guidelines for Inband Integration5.1.1 What is Inband Integration?In order for the VPS to function, it must be integrated with the PBX it serves. The type of integrationthat 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 datais sent using analogue DTMF tones.The PBX informs the VPS of the status of extensions by sending DTMF tones and Call Progresstones to the VPS. Similar to an extension user, the VPS places calls by going off-hook and diallingnumbers. It starts call transfers with a hookswitch flash to put callers on hold and then dials theextension number, just like an extension user.Signals Sent Between the PBX and VPS5.1.2 When to Use Inband IntegrationThe type of PBX and/or the type of extension cards installed in the PBX will determine whether InbandIntegration should be used. Generally, if the VPS is connected to an APT/DPT Integration compatiblePanasonic PBX, APT/DPT Integration—not Inband Integration—is the ideal integration method. See1.1.7 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 IntegrationThe type of VPS, PBX, and PBX extension cards used will determine the availability of certainfeatures. In order to use the features described in this section, you may need to test the PBX forcompatibility or refer to the documentation included with the PBX.Single Line (Tip/Ring) Port CircuitsThe 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 donot provide all the capabilities listed in this section.PBX to VPS VPS to PBXCall Progress Tones• ringback• busy• reorderDTMF tonesSLT Signals• on/off hook• hookswitch flashDTMF tones
