Vocia Paging Station Interface (VPSI-1) Hardware

The Vocia Paging Station Interface (VPSI-1) device is designed to allow third party microphones and LED indicators to interface as slave devices to the Vocia Wall Station and Desk Station (WS-4/10 and DS-4/10) series microphones and to the Vocia Input 6 (VI-6) device for paging via the Paging Ports. Up to four VPSI-1 interfaces can be connected per VI-6. The two modes of operation as specified by the selection in the software are Remote Control mode and Auxiliary Microphone mode. Power is provided by the host device.

Features

• VPSI-1 with Remote Control mode will allow for a mic/line audio input, RS-232 VTP control of the host paging station, external Push-to-Talk connection, 12V DC out supply as well as a power LED indication on the unit itself.
• VPSI-1 with Auxiliary Microphone mode will allow for a mic/line audio input, Zone and Paging status LED output indication, external Push-to-Talk connection, 12V DC out supply as well as power indication on the unit itself.

Network

The VPSI-1 has a female RJ-45 connector labelled ‘To Host’ to facilitate this direct connection. A screened CAT5e or CAT6 cable wired straight through must be used, up to a maximum of 100 feet (30 meters). Unscreened cable must not be used. Although the VPSI-1 can use standard Ethernet cabling and connectors, it is not an IP device and must not be connected to an Ethernet switch or Network. It must be connected directly to either a Vocia Paging Station Auxiliary port or a Vocia VI-6 Paging Port. The supported connections are as follows;

Audio In

A balanced audio Input is available for paging audio. Both Line Level and Mic level input is available by configuring the jumpers on the rear of the unit and selecting the required Input sensitivity. Four nominal levels are available: 0dBu, -10dBu, -40dBu and -50dBu. A three way Jumper is provided that should be placed at the required setting. Note that if using a microphone as an input that phantom power is not provided and the microphone should be selected accordingly.

RS-232 and LED Connector

The DB-9 connector can be configured for two modes of operation in the software, either as a RS-232 port to facilitate Paging Station Vocia Text Protocol (PS-VTP) Interfacing or as LED indicators using an external interface board.

PTT

A Push-to-Talk relay is provided. When shorted to ground the PTT is enabled.

Modes of Operation

When attached to a Paging Station two modes of operation are available for the VPSI-1, Remote Control mode and Auxiliary Microphone >mode. Depending on which is selected in the software determines how the device operates.

• Remote Control mode allows a Third Party control system to control a connected paging station using Vocia Text Protocol (VTP) messages. See the PS VTP Commands section for system control commands.
• Auxiliary Microphone mode allows an external (customer supplied) LED circuit to display paging indication status. LED indication must be connected in this mode or an error will be shown. Please refer to the VPSI-1 Wiring Topologies for more information on connecting LEDs for indication.

When attached to the Paging Port of a VI-6 only Auxiliary Microphone mode is supported and therefore no other option is presented in the software. The VI-6 Paging inputs do not support the following Page Code functions:

• Store-and-Forward

• The use of a PIN Code

• Auto Repeat Paging

• Interworld Paging

• Delayed Release Paging

Page Codes configured to utilize any of the listed functions will not be shown in the VI-6 Paging Input Type list.

Behavior

When configured in Auxiliary Microphone mode and connected to a non-Emergency paging station or connected to a VI-6 Paging Port the following behavior is expected.

The Wait and Talk LED outputs on the DB9 connector will function when the PTT switch is activated as follows:

• The ‘Wait’ output will be asserted to denote that a user should wait for the host paging station or VI-6 to set up the page and play a Preamble.
• The ‘Talk’ output will be asserted to denote that a user should commence speaking the Page

LED Indicators