IP Desktop Master Station with Video Display - Configuration Guide

This article provides a detailed step-by step guide to the configuration and programming of the STENTOFON IP Desktop Master Station with Video Display.

This document should provide adequate information for setting up the station and getting it up and running.

Introduction

All the commands required to use the video display intercom will be described in this document. The following IP addresses will be used throughout the document:

• Video Display on Master Station IP address = 192.168.2.100
• Master Station IP address = 192.168.2.200
• AlphaCom IP address = 192.168.1.5
• Video Camera on Substation IP address = 192.168.2.90

The video display does not support an Ethernet cable from a PoE port. Power for the video display can only be obtained from an external power supply (available from Zenitel).

Technical personnel responsible for video display programming should have some working experience with STENTOFON software/interface such as AlphaPro and AlphaWeb.

Hardware Architecture

The intercom system architecture including video display is based on the following equipment:

• AlphaCom server (XE1/XE20/XE26)
• IP Master Station with video display (item no. 1038001535)
• IP Substation with video camera (item no. 1038051415)

A simplified diagram of the system configuration is shown to the right:

Functional Architecture

When someone initiates a call from the substation with video camera, the AlphaCom server sends a request to the AXIS camera which broadcasts its video stream on the LAN/VLAN. The command is generated from two scripts programmed in AlphaCom (one script for video stream connection to the video display and one script to disable the video stream from the video display).

This video stream is recovered by the AlphaCom server which transcodes the stream to a 320 x 240 pixel format so that it can be displayed on the video display.

Prerequisites

Video Stream

The video stream is read from the video display on a web server specified by the AlphaCom server. Hence, there is no recommended size or duration for the source file. The image resolution must be 320x240 pixels. Other resolutions are not supported.

Recommendations:

• File extension: mpg
• Resolution : 320x240 pixels
• Video Codec: MPEG-2 at 800 kbps

Powering Up the Video Display 1.3.2

The circuit board must be powered with an external 12 VDC, 1A power supply. No protection is provided on the board.

NOTE: Do not use a PoE switch port as a power source.

Video Display Settings

To set up the video display, the user must connect an Ethernet network cable to the master station. The user interface is accessible via a Telnet connection. The setup procedure is as described in the following sections.

Video Display Connection

Open the Command Prompt window on the PC by doing the following: In Windows XP

1. Click Start > Run

2. Type cmd and press Enter

In Windows 7

1. Click Start

2. Type cmd and press Enter

Run the following command:

telnet 192.168.2.100

If the connection is successful, the following is displayed:

Log in with the following user account settings:

• Login: root
• Password: aivonis

After logging in, you can start the configuration procedure.

Video Display Configuration

To display the video display configuration, run the following command:

fw_printenv

The configuration settings of the video display will be displayed:

The information related to the IP configuration of the video display is:

• ipaddr - Video display IP address
• gatewayip - Video display gateway IP address
• ethaddr - Video display MAC address
• imgurl - Address of the server where the standby image is located

Changing Video Display IP Configuration

The variables described below are used for changing the IP configuration of the video display.

To change the IP address of the video display, you must change the value of the variable ipaddr e.g.:

fw_setenv ipaddr 192.168.2.101

The operation is completed when Done is displayed.

To change the video display gateway address, change the value of the variable gatewayip e.g.:

fw_setenv gatewayip 192.168.0.2

To change the net mask on the video display, change the value of the variable netmask e.g.:

fw_setenv netmask 255.255.255.0

Test Camera Video Stream

To ensure that the video display is able to receive a video stream from the network, the following command has to be run:

mplayer -demuxer lavf

The following is an example command to receive the stream from a video camera with IP address: 192.168.2.90:

mplayer -demuxer lavf http://192.168.2.90/mjpg/video.mjpg

The video stream should now be displayed on the video display on the master station.

The above window appears when you get a good reading from the stream of the video camera.

To stop the streaming, press CTRL + C.

Modify Standby Logo on Video Display

Prerequisites

Save the image/logo to be displayed under Scripts in AlphaWeb.

The new image/logo will be displayed when there is communication between the video display and the AlphaCom server. Otherwise, the default STENTOFON logo is displayed.

The image/logo must have the following features:

• Image resolution: 380x240 pixels
• Format: jpg

Image/Logo Update

The image can be updated by using the variable imgurl available on the master station. This variable contains the address of the server where the image is saved (in this case, it is the IP address of the AlphaCom server).

To insert a new image:

• Log into AlphaCom via AlphaWeb
• Select the Custom Scripts tab and log in to your PC with the following access code:

- User name: scripter

- Password: alphascript

• Click Browse and navigate to the folder where the image CE.jpg is located
• Click Upload

If you wish to confirm the image change, run the following command:

fw_setenv imgurl http://192.168.1.5/cmd/CE.jpg

192.168.1.5 is the address of the AlphaCom server that contains the registered logo/image CE.jpg.

The image modification will take effect after the video display is rebooted, when the new logo has been downloaded.

To reboot, run the following command:

reboot

The video display will then restart and the new logo will appear.

Video Camera Configuration

The master station video display only supports the AXIS Protocol. The video camera setup is carried out from the camera web interface.

To assign the IP address of the video camera on the substation:

• Select Setup > Basic Setup > TCP/IP