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OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program Gateway Training Workshop Module Three Hands-on.

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Presentation on theme: "OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program Gateway Training Workshop Module Three Hands-on."— Presentation transcript:

1 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program Gateway Training Workshop Module Three Hands-on Configuration Audio Control Units (ACU) Patrick R Kempker Gateway Instructor OEC/ICTAP (619)

2 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 2 Glossary  COR/COS Carrier Operated Relay/ Carrier Operated Squelch - A receiver signal that gives a COS positive indication a carrier or signal is being received and the receiver is unsquelched.  CPM-2/4/6 Control Processor Module - This ACU module controls all aspects of system operation.  DTMF Dual Tone Multi Frequency - The standard touch-tone telephone dialing method sends DTMF characters over the Public Switch Telephone Network (PSTN) line.  DSP Digital Signal Processing (or Processor).  DSP-1/2/2IP The Digital Signal Processor Module, the main radio interface of the ACU system. DSP algorithms provide Voice Operated Transmit (VOX), Voice Modulation Recognition (VMR), Audio Delay, Noise Reduction, and Tone Keying functions.  Extension Each interface module in the ACU-1000 system is given an extension number. A user enters this extension number to make a communications link through the selected module  HSP-2/4/2IP The ACU-1000 Handset/Speaker/Prompt Module provides a local operator interface and the system voice prompt circuitry.

3 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 3 Glossary Cont.  INMARSAT International Marine/Maritime Satellite  PSTN-1/1IP Public Service Telephone Network module to interface to the Public Switch Telephone Network  PTT Push to Talk  RX Receive or Receiver  SIP Session Initiation Protocol  SCM-1/2 SIP Channel Module  Squelch A means of detecting audio and causing some action when it is present, such as keying a transmitter or unmuting an audio path.  TX Transmit or Transmitter.  VMR Voice Modulation Recognition. A type of squelch, which is activated only by spoken words and not by tones, noise, or other audio information.  VOX Voice Operated Xmit (Transmit). A circuit or algorithm, which causes a transmitter to key or some other action when voice is present. This squelch type is activated by any audio signal, and is not restricted to voice only.

4 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 4 Advanced Gateway Operations Overview  Specific Requirement & Capabilities  Setup & Configuration  Adjustments

5 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 5 Overview  Types of Ports (Purpose)  Optional Equipment  ACU Control Console  Module Adjustments  Questions

6 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 6 Specific Requirement & Capabilities Functional Diagram Baseband Voice VoIP

7 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 7 Specific Requirement & Capabilities LEDs provide connection status and diagnostics for each port Interconnects 4 audio devices; 2 VoIP channels; and local operator Can interconnect radios in any band including HF, VHF, UHF, P25, 800Mhz, and Nextel iDEN phones Internal pre-configured radio template library for all supported devices Water-resistant front panel with integrated keys and displays provides a standalone interface to the device in lieu of configuring and controlling by use of a PC Local monitor functionality External audio connectors for a variety of handset and headset support

8 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program ACU-M Back Connectors 8 1.Power On/Off Switch - Controls the DC input power to the unit. 2.Handset Connection - RJ-12C jack to connect the Handset with integrated PTT switch (provided). 3.Internal Speaker - Provides the Local Operator the means of hearing RX Audio from selected ports. 4.Serial - Male DB-9 connector provides serial RS-232 interface for remote control capabilities. 5.Power Connector – 4-pin CPC connector to input +9 to +15 VDC.

9 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program ACU-M Back Connectors (continue) 6.Ethernet - Female RJ-45 connector provides Ethernet network interface for remote control and VoIP capabilities. 7.Ext Speaker - Female 3.5 mm audio connector to interface external speaker. 8.Ear Phone - Female 3.5 mm audio connector for external headset use. 9.MIC - Female 3.5 mm audio connector for external headset use. 10.Port R1 thru R4 – Male DB-15 connectors interface a radio/resource to a specific ACU-M™ port. 9

10 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 10 Specific Requirements and Capabilities WAIS Software Requirements  OS Windows 98 Me, NT, 2000, XP, or Vista (XP Recommended)  Video card and display support 1280X1024 resolution at 16 bit color (24 or 32-bit color recommended)  128MB RAM minimum  50 MB free hard drive space  Ethernet Card, TCP/IP network protocol capability  Any type of pointing device will work, but a two-button mouse is recommended

11 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 11 Setup & Configuration JPS Updates  NOTE: Before making your initial adjustments make sure you have the latest software and firmware. Information can be found at (XXX = ACU1000, ACU2000IP, ACU_M, or ACU_T)  Request the latest updates at:  Useful Downloads:  IPSetup - displays the IP address of any JPS proprietary equipment connected to your network  NXU-2 Setup Utility – Allows quick configuration of NXU-2 and NXU-2a  PCNXU Software - With a ACU Controller Software this turns your computer with speaker and MIC into a VoIP Dispatch Center)  ACU Simulator – Allows you to run the ACU Controller software without using a live system

12 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 12 Setup and Configuration – ACU Controller Installation  Verify you have the latest controller software  If not Version 5.42, request it at: and Raytheon JPS will provide a download link  Contains the latest radio templates & cable schematics  Extract the files from the acuc5_42.zip file (Be sure to note the location of the extracted files)  Go to the extracted file’s location

13 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 13 Setup & Configuration ACU Controller Installation Double click on the Setup program

14 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 14 Setup & Configuration ACU Controller 4.2 Install Shield Click Next

15 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 15 Setup & Configuration Welcome Screen

16 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 16 Setup & Configuration License Agreement Read the End-user License Agreement Accept the terms and click Next

17 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 17 Setup & Configuration Readme Information Read the information the click Next - it explains additional programs needed to fully utilize the controller software (i.e. Adobe Acrobat Reader)

18 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 18 Setup and Configuration Installation Location Screen Accept the default installation location or press change and enter a new location. Click Next

19 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 19 Setup & Configuration Installation Progression Screen The program starts installing and the progression screen show were it is

20 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 20 Setup and Configuration Installation Complete Installation complete click finish

21 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 21 Setup & Configuration Interfacing to the ACU  Determine the Interface Devices (Radio, Cell, Satellite, VoIP – IP address, port)  Insure you have the proper interface cable  Connect the interface cable to the proper port (R-1 through R-4) and the interface device

22 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 22 Setup & Configuration Interfacing to the ACU  Connect the maintenance computer to the ACU  RS-232 serial port of the maintenance/controller computer to the Serial port  Computer’s Network Interface Card (NIC) RJ-45 port with a crossover CAT-5 Ethernet cable to the RJ-45 port  Computer’s Network Interface Card (NIC) RJ-45 port with a straight through CAT-5 Ethernet cable into the Local Area Network (LAN) for this to work the ACU must also be connected to the LAN  Turn on the ACU wait to hear “System Ready”  Double click on the ACU Controller ICON

23 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 23 Setup & Configuration Ethernet Connection Screen All JPS equipment come with a factory default IP address of

24 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 24 Setup & Configuration Serial Connection Screen

25 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 25 Setup & Configuration Default Controller Screen To enter the module configuration screen double click on any module’s icon (R1-R4 or V1-V2)

26 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 26 Adjustments R1-R4 Port Settings

27 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 27 Adjustments General Module Settings  Description – User Friendly Name of original radio net/talk group (i.e. Frequency, Organization,…)  ICON  Color – Adjusts Icon color to help distinguish one radio from another  Custom – Change module icon to a custom version (user is prompted for a location) Custom icons are stretched/compressed by the program to the correct size for a 1280x1024 display, which is 76x90, before again being stretched/compressed to the appropriate size for the actual ACU Controller window size that is running. NOTE: These settings are not stored in the ACU, they only help identify the module. They’re stored in the configuration file of the ACU Controller Software and must be reloaded at the start up of the Controller Software

28 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 28 Adjustments Templates  Supplied by Raytheon JPS  Contain optimum radio setup values as determined by JPS System Engineering Department  Settings are optimized when a specified radio is used with the radio configuration parameters and interface cable schematics (radio properly adjusted and JPS furnished cables)  User Created  Saves and restores all settings for an individual module

29 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 29 Adjustments Template (Cont.)  Save - Stores all settings for an individual module in a User- Created template, they are stored by default in the C:\ACU Controller\Template directory  Load - Restores all settings for an individual module, both JPS Furnished and User-Created Templates are located in the C:\ACU Controller\Template directory by default  Last Loaded/Saved – List the file name of the last accessed file  DSP Help – Brings up basic instructions for interfacing a radio to DSP  Open App Notes – Allows users to browse a PDF formatted application note’s library

30 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 30 Adjustments Audio Levels RX (Receive) Level - Default is 3=0dBm  Correct level are required for proper operation  Too high will cause flat-topping and distortion  Too low will not provide adequate audio volume  Front Panel Signal LED provides a guide; raise RX volume until the Signal LED flashes momentarily on voice peaks  Positive numbers adds attenuation, Negative numbers subtract it  If it never flashes it is to low  If it is almost always on it is to high

31 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 31 Adjustments Audio Level (Cont.) TX (Transmit) Level - Default is 6 = 0dBm  Correct level are required for proper operation  Positive numbers adds gain, Negative numbers subtract it (just reverse from RX level)  To high will cause flat-topping and distortion  To low will not provide adequate audio volume  If the actual requirement of the radio is known, select the level from below  If it is not known start at 0 and step up one point at a time until the proper level is reached.

32 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 32 Adjustments Squelch Type  DSP-1or DSP-2 must have positive knowledge an audio signal is present  For best reliability use hardwired COR signal  If no hardwired COR and the radio has a squelch circuit use the radio’s squelch in conjunction with Voice Operated Xmit (Transmit - VOX) mode  Voice Modulated Recognition (VMR) should be used with FM radios that must be operated with an open squelch

33 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 33 Adjustments Squelch Type (Cont.)  COR (0) Carrier Operated Relay/Squelch - Hard Wire COR the only parameter that needs to be set is the COR polarity  COR Polarity - Only set if hardwire core is used  The module allows the hardwired COR input to work active high or active low- Default is Active low  If the radio’s COR output goes low when a signal is being received, set the input to active low; if the radio’s COR output goes high when a signal is being received, set the input to active high

34 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 34 Adjustments Squelch Type (Cont.)  VMR (1) Voice Modulated Recognition - algorithm is not amplitude related; it specifies how stringent the algorithm is when deciding whether a signal contains speech or noise  Three parameters determine how VMR algorithm functions:  VOX/VMR Hang Time  VOX/VMR Threshold  RX Audio Delay

35 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 35 Adjustments Squelch Type (Cont.)  VOX (2) Default Voice Operated Xmit (Transmit) - algorithm will signal COR present whenever the incoming audio exceeds a set threshold (amplitude)  Three parameters determine how VOX algorithm functions:  VOX/VMR Hang Time  VOX/VMR Threshold  Rx Audio Delay

36 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 36 Adjustments VOX/VMR Threshold  VOX/VMR algorithms are not perfect and there are performance tradeoffs.  Low threshold is less likely to fail to detect speech but more likely to give a false transmit on noise  High threshold is less likely to false transmit on noise but will fail to detect some speech  Lower threshold should be used if noise is not excessive, Higher threshold is used for open-squelch FM radios

37 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 37 Adjustments VOX/VMR Hang Time  VOX/VMR Hang Time keeps the audio path enabled for an adjustable duration after the moment when speech is no longer detected preventing the audio from being muted between syllables or during pauses in speech

38 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 38 Adjustments Audio Delay  RX (Receive) Audio Delay (Input)  Prevents loss of the audio that is received before the detection takes place and the audio gates can open to send it to other modules  The amount of delay needed depends on the type of COR used  Delays should be kept at the default values unless system requirements dictate a change (slow-to-key radios…)

39 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 39 Adjustments Audio Delay (Cont.)  RX Audio Delay (Cont.)  There is never a true “zero delay”  RX delay does not delay the COR signal  If two radios are cross-connected an active COR at one module will immediately key the other module  The duration of the COR signal will be extended by the RX audio delay  Keep delay set as low as possible for clarity  If part or all of the first syllable is clipped the delay should be increased

40 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 40 Adjustments Audio Delay (Cont.)  TX (Transmit) Audio Delay - Mainly used for trunked radios  Trunked systems have a delay between when the radio’s PTT is activated and when a channel is assigned  Most systems signal this ready status by a confirmation tone, which can not be relayed by the ACU  The TX audio delay should be set to a duration that holds the TX audio until the channel is selected so the first syllable is not clipped  Note: When 2 radios are cross-connected the RX delay of one radio is added to the TX delay of the other  This is caused because the COR is not delayed so the combined delays could be as much as 1100ms

41 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 41 Adjustments Miscellaneous (Cont.)  COR Inhibit Time After PTT – Default is 1=100 ms  Used to prevent ping-ponging  Some radios produce momentary unwanted COR outputs just after their PTT inputs are de-activated, the COR inhibit cause the unwanted COR outputs to be ignored  IF the inhibit time is not correctly set, the unwanted COR signal can cause connected extensions to momentarily key

42 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 42 Audio Adjustments Ping Ponging  Ping Ponging is the effect when the radios in the patch begin bouncing between TX and RX with no signal present.  Connect all the radio interface modules together in one Net along with the HSP  Using the HSP handset key-up, speak, and release  Watch the radio icon’s COR indicator. Whichever radio icon shows activity first is the source of the problem  Remove that radio an see if the problem goes away, if not remove any addition problem radios  Patch one on the problem radios into a net with just the HSP, adjust the COR Inhibit Time After PTT up and repeat steps 2 and 3, continue the process until it fixes the problem, Remember to keep the adjustment as small as possible to avoid excess delays  Repeat for the other problem radios  Repeat steps 1 and 2 to verify the problem is corrected

43 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 43 Adjustments Audio Processing  High Frequency Equalizer – Default 4 Flat  Reshapes the high frequency response of the receive audio input  Improved DTMF detection when using radios with nonlinear response  Better-sounding audio  High Frequency response can be cut or booted by up to 5 dB

44 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 44 Adjustments Action Buttons  OK – Accepts all changes and closes the screen  Cancel – Closes the screen without accepting changes  Apply – Applies all changes without closing the screen

45 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 45 Adjustments V1-V2 Port Settings

46 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 46 Adjustments General Module Settings  Description – User Friendly Name of telephone system (i.e. Frequency, Organization,…)  ICON  Color – Adjusts Icon color to help distinguish one radio from another  Custom – Change module icon to a custom version (user is prompted for a location) Custom icons are stretched/compressed by the program to the correct size for a 1280x1024 display, which is 76x90, before again being stretched/compressed to the appropriate size for the actual ACU Controller window size that is running.  NOTE: These settings are not stored in the ACU, they only help identify the module. They’re stored in the configuration file of the ACU Controller Software and must be reloaded at the start up of the Controller Software

47 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 47 V1-V2 Adjustments IP Address – used to distinguish between the two (2) virtual VOIP ports  ACU-M IP address – the network address given to the ACU-M (Factory default is )  Module VOIP – The specific well known address the audio goes over to get to the virtual VOIP port.  Module Command – the well known port the command signals go over (COR, PTT)

48 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 48 V1-V2 Configuration  Comm. Mode – How the communications patch is established (Normal, Multicast, Connectionless)  Role – Role of the virtual port (Server, Client)  Status – Status of the talk patch (Disconnected, Connected)  Target – Distant end’s IP address (computer running PCNXU)

49 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 49 V1 – V2 Actions buttons  Connect to Target – Create a connection to the target IP address  Disconnect – Disconnects from the target IP currently connected  Refresh Info – Updates the connection status

50 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program V1 – V2 Action Buttons  OK – Accepts all changes and closes the screen  Cancel – Closes the screen without accepting changes  Apply – Applies all changes without closing the screen 50

51 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program 51 Questions ????

52 OEC/ICTAP Office of Emergency Communications / Interoperable Communications Technical Assistance Program


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