JPS RSP-Z2 User manual

INTEROPERABILITY NOW
Installation and Operation Manual
RSP-Z2TM
Dual Channel Interoperability Gateway
Designed and Manufactured by:
JPS Interoperability Solutions
5800 Departure Drive
Raleigh, NC 27616
919-790-1011
[email protected] / [email protected]
www.jpsinterop.com
Manual is JPS P/N 5160-600200 Revision 1.5 © March 2021

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FEDERAL COMMUNICATIONS COMMISSION
(FCC) COMPLIANCE NOTICE:
RADIO FREQUENCY INTERFERENCE NOTICE
This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause
harmful interference in which case users will be required to correct the interference at
their own expense.
CAUTION
Changes or modifications to this equipment not expressly approved by JPS
Interoperability Solutions could impair proper operation of the equipment and/or
could void user’s warranty.
NOTICE
JPS Interoperability Solutions reserves the right to make changes to the
equipment and specifications without prior notice.
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, Inc.
RSP-Z2 is a trademark of JPS Interoperability Solutions, Inc.
© 2018-2021 JPS Interoperability Solutions, Inc.

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Table of Contents
1RSP-Z2 OVERVIEW......................................................................................................................1-1
1.1 SCOPE ............................................................................................................................................1-1
1.2 IMPORTANT DEFINITIONS: ...........................................................................................................1-1
1.3 POSSIBLE RSP-Z2 CONFIGURATIONS .........................................................................................1-2
1.3.1 INDEPENDENT PASSTHROUGH 1-2
1.3.2 CROSS-CONNECTED 1-4
1.3.3 CROSS-CONNECTED WITH BACKHAUL 1-5
1.4 CONTEXT-SENSITIVE HELP..........................................................................................................1-6
1.5 FRONT PANEL LEVEL INDICATOR...............................................................................................1-6
1.6 USB HEADSET...............................................................................................................................1-7
1.7 CONFIGURATION AND CONTROL METHODOLOGY ....................................................................1-8
1.8 SPECIFICATIONS............................................................................................................................1-9
1.9 EQUIPMENT AND ACCESSORIES SUPPLIED ...............................................................................1-10
1.10 OPTIONAL EQUIPMENT:NOT SUPPLIED .................................................................................1-10
2INSTALLATION............................................................................................................................2-1
2.1 GENERAL.......................................................................................................................................2-1
2.2 UNPACKING AND INSPECTION......................................................................................................2-1
2.3 RESHIPMENT OF EQUIPMENT ......................................................................................................2-1
2.4 INSTALLATION CONSIDERATIONS ...............................................................................................2-2
2.5 MECHANICAL PACKAGE ..............................................................................................................2-2
2.6 CONNECTORS,CONTROLS,AND INDICATORS.............................................................................2-3
2.7 RADIO INTERFACE AND CABLES..................................................................................................2-4
2.8 POWER SOURCE............................................................................................................................2-4
2.9 SAFETY PRECAUTIONS AND PROCEDURES..................................................................................2-5
2.10 MAINTENANCE............................................................................................................................2-5
3WEB-BASED CONFIGURATION...............................................................................................3-1
3.1 SET UP IP ADDRESS AND SUBNET MASK.....................................................................................3-1
3.2 LOG IN...........................................................................................................................................3-1
3.3 NETWORK CONFIGURATION........................................................................................................3-2
3.3.1 IP ADDRESS DETERMINATION AND CHANGE VIA USB PORT 3-2
3.3.2 FIRMWARE UPDATE 3-3
4SECURITY - USER TYPES AND PERMISSIONS....................................................................4-1
5RSP-Z2 CONFIGURATION .........................................................................................................5-1
5.1 BASIC SYSTEM CONFIGURATION SELECTION.............................................................................5-1
5.2 CHANNEL SELECTION AND SETTINGS CONFIGURATION ...........................................................5-3
5.3 CHANNEL SETTINGS .....................................................................................................................5-4
5.4 CHANNEL PROFILES .....................................................................................................................5-7

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5.5 CHANNEL PROFILES BASIC INFORMATION...............................................................................5-10
5.6 CHANNEL SETTINGS –UNIVERSAL............................................................................................5-11
5.6.1 BASIC SETTINGS 5-11
5.6.2 AUDIO PRIORITY 5-12
5.7 LOCAL CHANNEL SETTINGS –USB HEADSET..........................................................................5-14
5.8 LOCAL CHANNEL SETTINGS –RADIO .......................................................................................5-15
5.9 IP-BASED CHANNEL SETTINGS –BRIDGE,ROIP, RTP, AND SIP............................................5-19
5.9.1 ENCRYPTION ON JPS BRIDGE AND JPS ROIP CHANNELS 5-19
5.9.2 BRIDGE 5-20
5.9.3 JPS ROIP 5-20
5.9.4 RTP 5-20
5.9.5 SIP 5-20
5.10 PUSH-TO-TALK OVER CELLULAR (PTTOC) CHANNEL SETTINGS .......................................5-21
5.10.1 JPS ROIP-BASED PTTOCCHANNELS 5-22
5.10.2 KODIAK/MSI-BASED PTTOCCHANNELS 5-23
5.11 LICENSED ENHANCEMENTS:ENCRYPTION ON JPS ROIP AND BRIDGE CHANNELS............5-24
5.12 RETURNING CONFIGURATION AND CHANNEL SETTINGS BACK TO FACTORY DEFAULTS..5-25
6OPERATING INSTRUCTIONS...................................................................................................6-1
6.1 USB HEADSET OPERATION..........................................................................................................6-2
6.1.1 USB HEADSET OPERATION,PTT MODE 6-5
6.2 DIAL OUT OPERATION .................................................................................................................6-6
6.3 LIVE STATUS INFORMATION........................................................................................................6-8
7RECENT UPGRADES TO THE RSP-Z2 ....................................................................................7-1
7.1 NEW/UPDATED FEATURES ...........................................................................................................7-1

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Interoperability Now 5 RSP-Z2 Installation and Operation Manual
Glossary
ACU®
JPS Interoperability gateways of various form factors that interface different types of
communications devices. Include ACU-1000/2000/M/T/5000/Z1.
ARA-1TM
JPS device that provides a SIP interface to an individual radio or other four-wire device.
BSI
Bridging Systems Interface –A specification jointly developed by government and industry to
provide a standard interface for radio interoperability systems. The BSI is based on SIP and RTP
and allows bridging of radio nets between disparate interoperability systems.
COR
Carrier Operated Relay - A receiver signal that gives a positive indication a carrier or signal is
being received and the receiver is unsquelched. Same as COS.
COS
Carrier Operated Squelch - See COR.
Cross-
Connection
A link made between two communications systems (e.g. radio, SIP) interfaced to a single device
(e.g. ACU, RSP-Z2), or between systems interfaced over a network to two or more ACU systems.
DSP
Digital Signal Processing (or Processor).
Hangtime
Sometimes called VOX Hangtime, Receive Hangtime, or Transmit Hangtime, a hangtime causes a
device to maintain the effect of audio presence for a brief period even without the actual presence
of audio. Hangtime is often used to prevent brief pauses in input audio from unkeying an attached
transmitter during the pauses. It may be applied to input audio to provide consistent audio to
multiple outputs (VOX Hangtime or Receive Hangtime) or, theoretically, applied to an output
audio to solely effect a single output (Transmit Hangtime).
Key
To key a transmitter means to cause it to transmit.
LMR
Land Mobile Radio.
Mute
To quiet or inhibit audio.
NXU-2BTM
Network Extension Unit or NXU®. A JPS device that interfaces a radio or other 4-wire device to
other communications devices over an IP network. An NXU-2B uses RoIP.
PBX
Private Branch Exchange. A telephone system that owned and operated by a private company (such
as a manufacturing business) rather than by a telephone company such as ATT.
PCB
Printed Circuit Board.
PTT
Push-to-Talk. An active PTT signal causes a transmitter to key.
RoIP
Radio over Internet Protocol. JPS proprietary protocol which sends voice plus radio control signals
over an IP network.
RX
Receiver or Receiving.
SIP
Session Initiation Protocol –A flexible, standards-based, open protocol that initiates and manages
communications between devices over an IP network, used in the RSP-Z2 for VoIP.
Soft Phone
A computer with software allowing it to be used as a VoIP phone.
Squelch
A circuit or software that mutes the audio output of a radio receiver if the carrier signal strength
falls below a certain level.
TX
Transmit or Transmitter.
VMR
Voice Modulation Recognition. A form of audio presence detection based on the presence of
human speech and notably not by tones, noise, or other non-speech audio. It is typically used as a
gating mechanism for audio –when speech is detected by VMR, this allows the speech audio to
flow into or out of a device. VMR is particularly useful with noisy audio signals such as HF because
VMR will ignore most static and white noise.
VoIP
Voice Over Internet Protocol - Protocol for delivering voice communications over IP networks.
Most network-phone providers (such as Vonage), use VoIP.
VOX
Voice Operated Xmit (Transmit), or Voice Operated Switch. A form of audio presence detection
based on sound presence and volume. It is typically used as a gating mechanism for audio –when
sound exceeds a VOX threshold, this allows the audio to flow into or out of a device. The sound is
not restricted to voice only.
Z2
Controller
JPS device that provides wide area interoperability and dispatch capabilities. The RSP-Z2 may
interface to a Z2 Controller remotely, allowing its resources to be utilized within the larger system.

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1RSP-Z2 Overview
1.1 Scope
This document provides a description, specifications, and configuration and operating
instructions for the RSP-Z2.
This section provides some essential background information that will assist in understanding
the capabilities of the RSP-Z2.
JPS Interoperability Solutions has several decades of experience with voice communications
interoperability, fielding their first devices in 1989. Over this time the company has encountered
and resolved a wide array of problems that can hamper or complicate communications when
disparate devices are patched together into interoperability nets.
The RSP-Z2 incorporates all this experience, in the form of a suite of sophisticated DSP
algorithms that operate at its interfaces with any connected communications devices, as well as
many custom radio interface cables, covering well over 300 different radio makes and models.
JPS interoperability devices are also known for simplicity and ease-of-use. The RSP-Z2’s
browser-based Graphical User Interface is carefully designed to make these sophisticated
capabilities available when necessary. When the simple setup and configuration works well, an
installer and operator need only be concerned with these elements. However, if the
communications system includes any problematic elements, a JPS interoperability device (such
as this RSP-Z2) has the features necessary to resolve the problems and optimizecommunications.
1.2 Important definitions:
COR: A signal that indicates when a radio (or other type of communications
device, such as an RSP-Z2) is receiving a valid audio signal.
PTT: A signal that tells a radio (or other communications device) to transmit the
audio signal being sent to it.
Full Duplex Communication System: Users can simultaneously talk to and
listen (for example, a standard telephone call).
Simplex or Half Duplex Communication System: Only one system user can
be heard at a time.
Interoperability Net: Communications link consisting of disparate devices (such
as radios of different frequencies, telephones, VoIP phones, etc.) connected
together, similar to a conference call.
The following paradigms are essential in understanding the basic operation of an interoperability
system.
•If multiple communications devices are engaged in an interoperability net, whenever one
device detects active COR (valid audio input), that audio, along with a PTT signal, is sent
to all other devices in the net to be transmitted.
•If any device in an interoperability net is half duplex (such as are almost all radio
systems), then all communications must be half duplex.

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Among the unit’s sophisticated features are various methods for determining active COR (such
as VOX or VMR, which are optimal or necessary for some types of devices), and adjustable
audio delays to meet the timing requirements of the connected communications systems.
1.3 Possible RSP-Z2 Configurations
The RSP-Z2 provides a pair of local-to-IP backhaul channels, along with a USB Headset
Channel. The non-headset channels can be configured in multiple ways, as illustrated below. All
three are explained in the following sections.
1.3.1 Independent Passthrough
This configuration provides two separate IP-to-IP or Analog-to-IP converters. For each, active
COR on the local side will send incoming audio out the IP backhaul interface, and vice-versa.
Active COR occurs when the channel determines that “Valid” audio input has been detected.
Available COR types (methods of determining valid audio) vary by channel type.

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Note that four separate channels are depicted for this configuration –two local audio channels
each tied to its own IP backhaul channel. A USB Headset can also be included and connected to
any communications channel.
Once a configuration is selected, right-clicking on any channel icon will bring up the Settings
Page for that channel. This facilitates setting the channel to a variety of Channel Types, with
appropriate settings options for the selected type.
Local Channel Type options include:
•Radio (also appropriate for other types of four-wire devices).
•RoIP (JPS-proprietary Radio over IP), RTP, and SIP (BSI compliant).
•USB Headset.
•Various Push-to-Talk over Cellular channels.
Backhaul Channel Type options include:
•Bridge (used to interface to other JPS Z-Series devices, e.g. ACU-Z1, Z2 Controller).
•RoIP, RTP, and SIP.
•Various Push-to-Talk over Cellular channels.
Since the RSP-Z2 is a half-duplex device, the first channel with active COR is in control until its
COR status goes back to inactive –unless another channel is configured to allow preemption. In
such a case, that channel’s incoming audio will take over. See the related context-sensitive help
below, from the Settings Page for a Radio channel.

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1.3.2 Cross-Connected
This configuration patches the two local interfaces together, with no IP backhaul. When one of
the two channels detects a valid audio input, the other will transmit this audio. See block diagram
below. RSP-Z2 Channel 01 is connected to a VHF repeater system for the State Highway Patrol,
and Channel 02 to the local Fire Department’s 800 MHz trunked system. A channel/talkgroup
on each system is set aside for emergencies when the two agencies must communicate with each
other.
Whenever any user from either system transmits on the designated channel/talkgroup, all other
users on both channels can hear. Because donor radios are used to interface the system,
identically to all other radios in each system, the RSP-Z2 installation has minimal impact.
→ Transmit Delay - A note about the need for sophisticated radio interface algorithms.
Any time a handheld radio on the 800 MHz trunked system keys up, that user needs to
wait until a channel acquisition confirmation tone is heard before speaking; only then is
the trunked system ready to transmit that user’s audio.
When a patrolman in the vehicle in the upper left keys up, he will begin talking without
any concern for a tone, as this is the normal procedure for the non-trunked VHF system.
Now consider the two systems cross-connected. When that VHF user keys up, his radio
will of course be in transmit mode, so there is no way to provide any feedback regarding
the channel acquisition tone that the 800 MHz donor radio will receive. Further, it’s
important that being included in the interoperability system does not alter normal
operation of either system. Instead, the RSP-Z2 deals with this through the Transmit
Delay feature in the Radio Channel Settings. The RSP-Z2 stores the audio temporarily in
an internal buffer and sends it out after the trunked system is ready to receive and
retransmit it.