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JPS ARA-1 Installation And Operation Manual

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INTEROPERABILITY NOW
Installation and Operation Manual
ARA-1
Radio to SIP Interface
Designed and Manufactured by:
JPS Interoperability Solutions
5800 Departure Drive
Raleigh, NC 27616
919-790-1011
Email:
sales@jpsinterop.com
/
support@jpsinterop.com
www.jpsinterop.com
P/N 5060-800200
Revision 4.4
February 2019
INTEROPERABILITY NOW
1

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  • Page 1 INTEROPERABILITY NOW Installation and Operation Manual ARA-1 Radio to SIP Interface Designed and Manufactured by: JPS Interoperability Solutions 5800 Departure Drive Raleigh, NC 27616 919-790-1011 Email: sales@jpsinterop.com support@jpsinterop.com www.jpsinterop.com P/N 5060-800200 Revision 4.4 February 2019 INTEROPERABILITY NOW...
  • Page 2 PROPRIETARY STATEMENT The information contained in this manual is the property of JPS Interoperability Solutions and is intended for the purchaser’s use only. It may not be reproduced without the expressed written consent of JPS Interoperability Solutions. © 2019 JPS Interoperability Solutions, Inc.

  • Page 3: Table Of Contents

    ............................1-3 PPLICATIONS 1.4.1 Operation within a SIP PBX ......................1-3 1.4.2 Operation Outside of a SIP PBX ..................... 1-4 1.4.3 Use of the ARA-1 with a Repeater System ..................1-5 ................1-6 ONNECTION TO EVICES THER HAN A ADIO ARA-1 ..........
  • Page 4 .......................... 3-19 ANAGEMENT ......................3-20 DMINISTRATIVE UNCTIONS 3.6.1 Password Protection ........................3-20 3.6.2 Firmware Upgrade ........................3-21 3.6.3 Remote Reboot of the ARA-1 ......................3-21 ARA-1 ................3-21 ESETTING THE ACTORY EFAULTS OPERATION ..............................4-1 .............................. 4-1 ENERAL ........................4-1...

  • Page 5: List Of Figures

    ARA-1 Operations Manual List of Figures ARA-1 B ...................... 1-2 IGURE ASIC LOCK IAGRAM ARA-1 SIP PBX N ................1-3 IGURE XAMPLE OF ETWORK ARA-1 U ..................1-4 IGURE XAMPLES OF NTERNET ARA-1 ....................1-5 IGURE WITH A EPEATER YSTEM...
  • Page 6 ARA-1 Operations Manual Glossary Analog Telephone A device that interfaces an analog telephone to a SIP Adapter network. Carrier Operated Relay A signal from a receiver that indicates when a carrier or signal is being received and the receiver is unsquelched.

  • Page 7: General Information

    It is comparable to an ATA (analog telephone adapter), which allows a standard telephone to operate on a SIP network; the ARA-1 provides the same capability to a radio. The ARA-1 makes special provision for the differences between radios and telephones. In particular, the half-duplex nature of radios and the control signals they require are accommodated by the ARA-1.

  • Page 8: Why Sip

    IP-based network or the Internet with another SIP-enabled device (such as a SIP Phone, a softphone, or another radio/ARA-1 pair). The radio side of the interface makes full use of the extensive suite of digital signal processor algorithms, hundreds of interface cables, and numerous problem-solving techniques that JPS has evolved during more than a decade as the market leader in radio interoperability.

  • Page 9: Applications

    ARA-1 Operations Manual 1.4 Applications The ARA-1 can be used either as part of a SIP PBX or without one. Often the radio associated with the ARA-1 will be part of a repeater system. The features of each of these configurations are explained in the following sections.

  • Page 10: Operation Outside Of A Sip Pbx

    VHF conventional radio. 1.4.2 Operation Outside of a SIP PBX The ARA-1 can also be used without a SIP PBX, but without the features provided by the PBX, so that only one-to-one connections are possible. Three variations are illustrated in Figure 1-3.

  • Page 11: Use Of The Ara-1 With A Repeater System

    1.4.3 Use of the ARA-1 with a Repeater System It is important to note that the ARA-1 makes a connection not to a single radio or single radio user, but to an entire radio system. All signals picked up by the radio are relayed through the ARA-1, and more importantly, transmissions through the ARA-1 are sent to all radios that can pick up this transmission.

  • Page 12: Connection To Devices Other Than A Radio

    This manual does not attempt to familiarize the reader with SIP fundamentals. SIP is an open protocol and there are many references that explain how to best make use of it. The ARA-1 is fully compliant with the SIP protocol.

  • Page 13: Cor & Ptt Signaling In The Sip Environment

    With full duplex systems, all parties to a conversation may be heard simultaneously: a telephone system is a good example. Most JPS interoperability equipment can accommodate both types of systems, but both parties of a conversation must be using full duplex equipment for either party to be able to simultaneously talk and listen.

  • Page 14: Deriving Cor From The Local Radio

    When the extension is detected by the distant ARA-1, it knows the local radio is unsquelched. The local ARA-1 will send its COR status over the network as part of the RTP extension header if its Send Radio COR/AUX Status function is enabled.

  • Page 15: Deriving Cor At The Distant Side

    • RTP Header: makes use of an RTP extension header that JPS created for this purpose. This is useful when there are JPS SIP devices at both ends (or the use of the SIP extension header has been built in to another vendor’s equipment).

  • Page 16: Specifications

    ARA-1 Operations Manual 1.9 Specifications Table 1-1 Specifications Radio RX Audio Input Input Impedance Balanced 47k ohms, transformer coupled Incoming signals adjustable from –30 to +11 dBm to set 0 dBm nominal input; Input Level +15 dBm clipping; +20 dB boost configurable...

  • Page 17: Equipment And Accessories Supplied

    ARA-1 Shipping Level - JPS P/N 5060-800000 Quantity Item JPS P/N ARA-1 Final Assembly 5060-801000 Includes the ARA-1 enclosure with the ARA-1 PCB Assembly 12V DC Power Supply [100 to 240 VAC, 47-63 Hz] 1620-240061 Accessory Kit 5060-800150 Consisting of:...

  • Page 18: Optional Equipment: Not Supplied

    Generic Radio Interface Cable; unterminated at radio end; 15 ft. 5961-291115 Interface cables for a very wide range of commercial radios are available for purchase. Email JPS or consult the JPS Interoperability Solutions website for a listing: Email: sales@jpsinterop.com support@jpsinterop.com www.jpsinterop.com...

  • Page 19: Installation

    Contact the carrier and file a shipment damage claim. A full report of the damage should also be reported to the JPS Customer Service Department. The following information should be included in the report: ➢...

  • Page 20: Installation Overview

    REMARQUE: Utilisez seulement la Class 2 de la generation electrique qui est inclus avec l'equipement. 3. Interconnect the unit with the communications system via the ARA-1's rear panel connectors. J7 provides the audio and control lines necessary to interface the ARA-1 to your audio equipment.

  • Page 21: Installation Considerations

    Careful attention to the following installation suggestions should result in the best unit/system performance. Figure 2-1 provides overall unit dimensions. The ARA-1 must be installed in a structure that provides both protection from the weather and assurance of ambient temperatures between -20 and +60 degrees C. Since the unit is neither splash proof nor corrosion resistant, it must be protected from exposure to salt spray.
  • Page 22 ARA-1 Operations Manual Figure 2-1 Outline Dimensions INTEROPERABILITY NOW...
  • Page 23 ARA-1 Operations Manual J7 AUDIO/CONTROL J3 NETWORK J4 RS-232 DB-15 Female RJ-45 DB-9 Female DEFAULTS DC IN IN TP IN LVL OUT LVL Figure 2-2 Front and Rear Panel Views INTEROPERABILITY NOW...

  • Page 24: Internal Configuration

    2.6 Power Requirements The ARA-1 is designed to operate from a nominal +12V DC supply. The unit will meet all of its specifications over a voltage range of +11 to +15 VDC and will be damaged by a DC source that delivers a constant (non-transient) DC voltage above this range.

  • Page 25: Audio Level Adjustment Potentiometers And Input Test Point

    2.8.3 Audio Level Adjustment Potentiometers and Input Test Point The audio input level to the ARA-1 is set by adjusting the IN LVL control on the rear panel. With “normal radio receive audio” input applied at J7, adjust the IN LVL control until the AUDIO INPUT indicator flashes on voice peaks.

  • Page 26: Network Connection (J3)

    ACU-1000. If you are designing a cable based on Table 2-2, or if you are connecting the ARA-1 directly to an ACU- 1000, then you do not need the Audio Crossover Adapter.

  • Page 27: Configuration

    • Subnet Mask: 255.255.255.0 • Gateway IP: 0.0.0.0 If these settings are compatible with your network, you may plug the ARA-1 into your Ethernet switch and proceed with the configuration. If you wish to configure the ARA-1 with a standalone computer, you should set your computer’s network settings to allow communication with these...

  • Page 28: Basic Unit Status And Information

    Figure 3-1 Status/Information Page This is the status and information page for the ARA-1 and the page you are greeted with when you browse to the unit. It shows the current network settings as well as some other status information, such as the version of the firmware currently loaded in the ARA-1. Now click the Network Settings link to go to the next page.

  • Page 29: Network Settings

    3.2.3 SIP Settings The SIP Settings page is where you will configure the SIP settings for this device. The ARA-1 can register with a SIP PBX, or it can operate as a standalone device. Note that theARA-1 settings will most often depend on the requirements of the SIP communications device/system that the ARA-1 is being connected to.
  • Page 30 Send Radio COR/AUX Status setting. If set to Enable, the status of the COR and AUX Input pins on the ARA-1 rear panel will be sent across the IP link. This is useful if your radio has a hardware squelch line (COR) and you are linking to other ARA-1 units. Sending COR Status will tell the other units when the radio is unsquelched, and the other radios can assert their PTT control output lines if they are part of the connection.
  • Page 31 Settings Option Description Display Name: Name displayed on a remote SIP Phone when it connects to the ARA-1. The unit’s SIP domain (if needed). The domain portion of the unit’s URI. Domain: The SIP user name or extension. The username portion of the unit’s URI.
  • Page 32 Accept REFER requests If enabled, allows operator-assisted call transfers via PBX. Not intended for immediate/automatic “non-operator assisted” transfers. Supported operation is as follows: Radio user connects to PBX via the ARA-1. PBX operator confers with radio user and initiates requested transfer of the radio connection to a different SIP endpoint.

  • Page 33: Sip Actions

    The factory default setting—a duration of one second (1000 ms)— should work for most systems. In order to control the PTT output of the ARA-1 using SIP Actions, the Network COR Type setting on the Radio Settings page (see Figure 3-5) must be set to SIP Actions.

  • Page 34: Configuration Details: Radio Interface

    Included on the Radio Settings page (shown in Figure 3-5) are all the settings that affect the interface to, and operation of, the radio cabled to the ARA-1. This page is used to configure and optimize the unit for best performance in a particular radio application. Each of the settings is explained in this section;...
  • Page 35 (active low). This control line may also be called COS or simply SQUELCHED or UNSQUELCHED. If the radio does not have a COR output control line, select VOX. When the ARA-1 is in VOX mode, it measures the volume of the sound available in the RX output from the radio. Whenever this audio exceeds a set threshold, the VOX trips, signaling the unsquelched condition (see Radio COR VOX Sensitivity, Section 3.3.1.3).

  • Page 36: Radio Ptt Timeout

    ARA-1’s PTT output to the radio. For example, if a user is connected to an ARA-1 via a SIP Phone, and the ARA-1 is configured to use VMR as the Network COR Type, an overly sensitive SIP Phone microphone and/or loud background voices can cause the ARA-1 to key indefinitely, thereby preventing any return communications from radio users.

  • Page 37: Network Cor Settings Options

    ARA-1(or other SIP device) that may link to this unit must send the RTP Header. If the device on the other side of the network is another ARA-1, it must have its SIP Settings Send Radio COR/AUX Status option enabled. See Section 3.2.3 for instructions about enabling this function.
  • Page 38 ARA-1 Operations Manual its Send Radio COR/AUX Status function enabled (for example, a SIP Phone). If these other devices will be used, set the ARA-1 Network COR Type to either RTP Header + VOX or RTP Header + VMR. Both RTP Header + VOX and RTP Header + VMR make use of the COR status information from linked ARA-1s, but also properly link with non-ARA-1 devices.

  • Page 39: Audio Adjustments

    ARA-1 Operations Manual RTP packet. Having some hang time prevents the radio from being unkeyed momentarily in the absence of a small number of packets. When selected, the final setting option—Disable—never allows any audio received from the network to key the attached radio. This can be useful in situations where one intends only to monitor a radio’s receive signal.

  • Page 40: Outgoing Call Configuration

    ARA-1 Operations Manual 3.4 Outgoing Call Configuration A radio user may initiate and terminate calls over the SIP network by one of two methods: • If the user’s radio has a keypad, a pre-selected DTMF sequence may be transmitted. This is the easiest and surest way (and, therefore, the preferred method) •...

  • Page 41: Configuring Outgoing Call Initiation Via Dtmf

    Many radios do not have DTMF keypads, so the ARA-1 offers an alternative method to initiate a SIP call. COR Cadence is a feature of the ARA-1 whereby radio users can press the PTT button on their radios a specified number of times at a specified rate to initiate a pre-programmed connection.
  • Page 42 ARA-1 Operations Manual the ARA-1. These pulses are also called Squelch Breaks. To minimize the possibility of falsing on random noise, pulses that fall out of a specified duration are ignored by the ARA-1. NOTE: This method only works if: (1) The radio cabled to the ARA-1 has a COR Output signal that is connected to the ARA-1’s COR Input pin.

  • Page 43: Automated Dialing Methods

    When the Power On Dialing setting is configured with a valid extension, SIP URI, or IP address, the ARA-1 will automatically dial it at power up. If the ARA-1 is set to register with a SIP proxy, it will not dial until after it has successfully registered.

  • Page 44: Automatic Redialing

    To have the ARA-1 redial a call it initiated when it receives a BYE (the other end hangs up), set the Redial Outbound Calls On BYE setting to Enable.

  • Page 45: Call Management

    ARA-1 Operations Manual 3.5 Call Management The Call Management page (shown in Figure 3-7) allows the user to initiate a call from the ARA- 1 via a web browser. It is actually an operations function page rather than a configuration page, but is included here for clarity.

  • Page 46: Administrative Functions

    ARA-1 Operations Manual 3.6 Administrative Functions The Administration page (shown in Figure 3-8) allows password protection of access to the ARA- 1 web pages, facilitates upgrades to the unit’s firmware, and provides a means to remotely reboot the ARA-1. Figure 3-8 Administration Page 3.6.1 Password Protection...

  • Page 47: Firmware Upgrade

    3.7 Resetting the ARA-1 to Factory Defaults If you find it necessary to reset the ARA-1 to its factory default state (for example, if you have forgotten the IP address or the password), you can reset all the settings to the factory default settings by pressing and holding SW1 (Defaults) on the rear panel for 5 seconds.
  • Page 48 ARA-1 Operations Manual This page intentionally left blank 3-22 INTEROPERABILITY NOW...

  • Page 49: Operation

    4.2.2 Link Active LED The green Link Active LED is illuminated whenever the ARA-1 has accepted a SIP invite or when a SIP invite from the ARA-1 has been accepted. The LED goes out when the SIP call is terminated.

  • Page 50: Basic Operation

    ARA-1 Operations Manual 4.3.2 Basic Operation The ARA-1, once fully and properly configured, appears as a SIP endpoint and will respond to SIP invites. If it has been programmed to register with a SIP proxy, it will attempt to do so. Once a connection is established, the LINK ACTIVE indicator on the front panel will light.

  • Page 51: Call Progress Monitoring

    • Call Progress voice prompts • Call Management Information available via web browser The ARA-1 provides voice prompts (automated voice messages) that allow the radio user to keep track of the progress of the call (connecting, disconnecting, etc.). The factory default setting is Enable.

  • Page 52: System Information Prompts

    4.3.5 System Information Prompts The ARA-1 can “speak” the current network settings out over the radio port as an aid to setting up the units. This is particularly useful if you have set the unit to use DHCP and you do not know the assigned IP address.

  • Page 53: System Troubleshooting

    If the users on the radio-system end of an ARA-1 conversation regularly miss the initial syllables of messages from the network, it is likely that the TX audio delay setting of the ARA-1 must be increased. There are two probable causes: •...

  • Page 54: Missed Syllables Mid-Conversation: Radio Side

    5.4 Missed First Syllables: Network Side If the users on the network end of an ARA-1 conversation miss the initial syllables of radio messages sent over the network, the Radio COR Type is probably set to VOX, and the VOX function is not properly optimized.

  • Page 55: Explanation: Trunked Channel Acquisition Delay

    Also keep in mind that the ARA-1 allows “on-the-fly” adjustment of the delay time through the web browser interface.
  • Page 56 Therefore, radio #2 will not start transmitting the audio from radio #1 until 350 ms have past, and the first word of the message is clipped. • C: If the ARA-1 delays the audio to radio #2 by at least as long as the channel acquisition delay, the entire message gets through.
  • Page 57 ARA-1 Operations Manual Figure 5-2 shows the potential communication problems that can occur when the necessary delay is not provided, with messages clipped or lost entirely. The vertical lines signify various channel acquisition delays. Without corresponding TX Audio delays, all speech up until the channel is acquired will be clipped off of the beginning of the transmission (which could be an entire short, but vital, message).

  • Page 58: Ping Pong

    VOX (as some radios will send out a noise burst after they unkey). To prevent this, first use the ARA-1 front panel LEDs to determine if the particular radio make and model connected to the ARA-1 exhibits the “inappropriate COR after PTT” behavior. The Channel Active LED lights whenever the ARA-1 is detecting active COR.

  • Page 59: Ara-1 Faq (Frequently Asked Questions)

    I have a 100 Mbps Ethernet. Can I connect the 10 Mbps port on the ARA-1 to my network? Most 100 Mbps equipment (hubs, switches, routers) will work with either a 10 Mbps or 100 Mbps connection, so it should work without any problems.
  • Page 60 ARA-1 to network interface equipment such as hubs, switches, or routers. You can directly connect a pair of ARA-1 units up to 100 meters apart using a CAT5 crossover cable.
  • Page 61 How does a firewall affect the ARA-1? A firewall may prevent a connection to an ARA-1 if it is behind the firewall and the SIP proxy or other connecting device is not. This problem can often be overcome through the use of STUN, which is described in the configuration section of this manual.
  • Page 62 Should I use NAT with the ARA-1? The only time it is advisable to use NAT with the ARA-1 is when you wish to have multiple units on a network, but have only one public IP address. An example of this would be a bank of ARA- 1s sharing a broadband type connection, such as DSL or cable modem, where only one IP address is allocated by your ISP.

  • Page 63: Index

    Adjustments ............2-6 Front Panel Indicators........... 4-1 Administrative Functions ........3-20 Applications ............1-3 ARA-1 Operation ..........4-1 ARA-1 With A Repeater System ......1-5 General Information ..........1-1 ATA ................. 6 Audio Adjustments ..........3-13 Audio Crossover Adapter ........2-8 Input Level Adjustments ........
  • Page 64 Rear Panel ............2-5 UDP ................. 6 Receive Audio Boost .......... 3-13 Unit Information ..........3-2 Remote Reboot of the ARA-1 ......3-21 Unit Status ............3-2 Resetting the ARA-1 to Factory Defaults... 3-21 Unpacking and Inspection ........2-1 Reshipment of Equipment ........2-1 URI ................

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