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Software License

The Zetron software described in this manual is subject to the terms and conditions of Zetrons Software LicenseAgreement, a copy of which is contained on the product distribution media or otherwise provided or presented to buyer.Installation and/or use of the Zetron software constitutes acceptance of Zetrons Software License Agreement.

Contains software BSD Unix, Copyright 1980, 1983, 1988, 1993 The Regent of the University of California. All rightsreserved.

Limited Warranty

Buyer assumes responsibility for the selection of the Products to achieve buyer's or its customers intended results obtainedfrom the Products. If buyer has provided Zetron with any requirements, specifications or drawings, or if Zetron provides

buyer with such materials, such materials are provided solely for buyers convenience and shall not be binding on Zetronunless agreed in writing by the President of Zetron. ZETRON DOES NOT WARRANT THAT THE PRODUCTS OR ITSCUSTOMERS REQUIREMENTS OR SPECIFICATIONS OR THAT OPERATION OF THE PRODUCTS WILL BEUNINTERRUPTED OR ERROR FREE. SUBJECT TO THE LIMITATIONS SET FORTH BELOW, Zetron warrants thatall Zetron Products and Zetron Accessories will be free from material defects in material and workmanship for one yearfrom date of shipment (except where indicated otherwise in the Zetron Price Book). For buyers convenience, Zetron may

purchase and supply additional items manufactured by others. In these cases, although Zetrons warranty does not apply, buyer shall be the beneficiary of any applicable third party manufacturers warranties, subject to the limitations therein.Zetron's warranty covers parts and Zetron factory labor. Buyer must provide written notice to Zetron within the warranty

period of any defect. If the defect is not the result of improper or excessive use, or improper service, maintenance orinstallation, and if the Zetron Products or Zetron Accessories have not been otherwise damaged or modified after shipment,AS ZETRON'S SOLE AND EXCLUSIVE LIABILITY AND BUYER'S SOLE AND EXCLUSIVE REMEDY, Zetron shalleither replace or repair the defective parts, replace the Zetron Products or Zetron Accessories or refund the purchase price, atZetron's option, after return of such items by buyer to Zetron. Shipment shall be paid for by the buyer. No credit shall beallowed for work performed by the buyer. Zetron Products or Zetron Accessories which are not defective shall be returned at

buyer's expense, and testing and handling expense shall be borne by buyer. Out-of-warranty repairs will be invoiced at thethen - current Zetron hourly rate plus the cost of needed components. THE FOREGOING WARRANTY AND THE THIRDPARTY MANUFACTURER'S WARRANTIES, IF ANY, ARE IN LIEU OF ANY AND ALL OTHER WARRANTIESEXPRESSED, IMPLIED OR ARISING UNDER LAW, INCLUDING, BUT NOT LIMITED TO, THE IMPLIEDWARRANTIES OF MERCHANTABILITY, NON-INFRINGEMENT AND FITNESS FOR A PARTICULAR PURPOSE.

Limitation of Liability

Zetron makes no representation with respect to the contents of this document and/or the contents, performance, and functionof any accompanying software. Further, Zetron reserves the right to revise this document or the accompanying software andto make changes in it from time to time without obligation to notify any person or organization of such revisions or changes.

ZETRON SHALL NOT UNDER ANY CIRCUMSTANCES BE LIABLE TO BUYER OR ANY THIRD PARTY FORANY INCIDENTAL, SPECIAL, CONSEQUENTIAL OR INDIRECT LOSS OR DAMAGE ARISING OUT OF ORCONNECTED WITH BUYER'S PURCHASE OR USE OF PRODUCTS OR SERVICES, INCLUDING WITHOUTLIMITATION, LOSS OF USE, LOSS OR ALTERATION OF DATA, DELAYS, LOST PROFITS OR SAVINGS, EVENIF ZETRON HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES AND EVEN IF THE LIMITEDREMEDY ABOVE IS FOUND TO FAIL OF ITS ESSENTIAL PURPOSE. IN NO EVENT SHALL ZETRON'SLIABILITY (WHETHER FOR NEGLIGENCE OR OTHER TORT, IN CONTRACT OR OTHERWISE) EXCEED THEPRICE PAID TO ZETRON FOR THE PRODUCTS.

IP networks by their nature are subject to a number of limitations, such as security, reliability, and performance. Anyoneusing non-dedicated IP networks, such as shared WANs or the Internet, to connect to any Zetron Products or systems shouldconsider and is responsible for these limitations.

Zetron, Inc. All rights reserved. This publication is protected by copyright; information in this document is subject to changewithout notice. Zetron and the Zetron logo are registered trademarks of Zetron, Inc. Other company names and productnames may be the trademarks or registered trademarks of their respective owners. This publication may not be reproduced,

ranslated, or altered, in whole or in part, without prior written consent from Zetron, Inc.

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3

Compliance Statements

Products and batteries with the symbol (crossed-outwheeled bin) cannot be disposed as householdwaste. Old electrical and electronic equipment and

batteries should be recycled at a facility capable ofhandling these items and their waste byproducts.

Contact your local authority for details in locating arecycle facility nearest to you.

Proper recycling and waste disposal will helpconserve resources whilst preventing detrimentaleffects on our health and the environment.

Notice: The sign Pb below the symbol for batteries indicates that this battery contains lead.

Information on Disposal of Old Electrical and Electronic Equipment andBatteries (applicable for EU countries that have adopted separate wastecollection systems)

FCC Class A User Information

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of theFCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment isoperated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if notinstalled 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 the user will berequired to correct the interference at his own expense.

Regulatory Compliance Markings

When required these products are provided with the following Product Certification Markings:

FCC Part 15 (USA) CS-03 (Canada)

EMC Compliance Standards FCC Part 15 Radiated & Conducted Emissions (USA) ICES-003 Radiated & Conducted Emissions (Canada)

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4 025-9620BC.1

Safety Summary

STOP

Warning! For your safety and the protection of the equipment, observe theseprecautions when installing or servicing Zetron equipment.

Follow all warnings and instructions marked on the equipment or included in documentation. Only technically qualified service personnel are permitted to install or service the equipment. Be aware of and avoid contact with areas subject to high voltage or amperage. Because some components can

store dangerous charges even after power is disconnected, always discharge components before touching. Never insert objects of any kind through openings in the equipment. Conductive foreign objects could produce a

short circuit that could cause fire, electrical shock, or equipment damage. Remove rings, watches, and other metallic objects from your body before opening equipment. These could be

electrical shock or burn hazards. Ensure that a proper electrostatic discharge device is used, to prevent damage to electronic components. Do not attempt internal service of equipment unless another person, capable of rendering aid and resuscitation, is

present. Do not work near rotating fans unless absolutely necessary. Exercise caution to prevent fans from taking in foreign

objects, including hair, clothing, and loose objects. Use care when moving equipment, especially rack-mounted modules, which could become unstable. Certain items

may be heavy. Use proper care when lifting.

Change List for Rev B, 19 August 2011 Added material supporting the use of the EIU card for connecting with Acom EVO consoles.

Change List for Rev C 19 January 2012 Added RTEMS copyright information to front matter.

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Contents

5

Contents

Ethernet Interface Unit (EIU) ............................................................................ 7 Overview ................................................................................................................................ 7

EIU for Acom EVO Consoles ......................................................................................... 8 EIU for Intelligent Radio Interface Modules ................................................................... 8

Block Diagram........................................................................................................................ 9 Description of Major Functional Blocks ........................................................................ 10

Interfaces ............................................................................................................................. 11 Front Edge Layout ....................................................................................................... 11 Rear Edge Layout ........................................................................................................ 12 Physical Layout ............................................................................................................ 12 LED Indicators ............................................................................................................. 13 Reset ............................................................................................................................ 15 Settings ........................................................................................................................ 15 Connector Detail .......................................................................................................... 15

Installation ............................................................................................................................ 17 Card Placement ........................................................................................................... 17 Description ................................................................................................................... 18

Alarm Generation .................. .................. .................. .................. .................. .................. ..... 19 Technical Specifications ...................................................................................................... 20

LAN Interface ............................................................................................................... 21 Mean Time Between Failures ...................................................................................... 21

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Overview

7

Ethernet Interface Unit (EIU)

P/N 950-0860

Overview

The EIU is an Acom card that provides Ethernet connectivity for Acom backroomequipment such as the Acom DS3 Subrack (ADS) and Acom Line Subrack (ALS). TheEIU is primarily used for two purposes: to connect with Acom EVO Consoles over an IPnetwork, and to connect with Zetron Intelligent Radio Interface Modules (iRIMs).

The two Ethernet ports on the EIU support network redundancy provided they areconnected to a redundant network configuration. The EIU card has LEDs that providevisible indication of network activity and redundancy status. Configuration andadjustments are performed via the Integrated Management System (IMS).

The EIU card has the following features:

Compatible with network redundancy Local and remote debugging access HTTP access to statistics Hot plugging capability Failsafe firmware

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Overview

8 025-9620BC.1

EIU for Acom EVO Consoles

The EIU, when installed in an Acom DS3 Subrack (ADS), provides access for AcomEVO Consoles over an Ethernet LAN. Each EIU supports up to two groups of consoles.Each console group supports:

Up to 10 consoles, depending on configuration. A maximum of 30 console interface channels between all consoles. A maximum of 256 digital audio connections between all consoles (monitoring a

radio takes one connection, a monitored or selected line with parallel activitymay take two connections).

A shared IGMP multicast address to minimize console messaging in the group. Redundant Ethernet connections to the LAN. Consoles with redundant IP connections to the multiple EIU.

The EIU card, when used with Acom EVO Consoles, has the following features:

Interleaved audio multiplexing into RTP streams to/from the IP console. Selectand Monitor channels form a single RTP stream to the console.

RTCP statistics for the RTP streams. PCM to RTP conversion with clock rate adjustment. G711 audio codec for clear voice. Dynamic jitter buffer to minimize latency and packet-loss. IP console connectivity and data messaging using UDP and IMGP. 802.1P Differentiated Services QoS tagging of traffic. May be installed in ADS slot 2-4. Up to 3 EIU cards may be installed in an ADS shelf.

EIU for Intelligent Radio Interface Modules

The EIU, when installed in an Acom Line Subrack (ALS), connects to Zetron IntelligentRadio Interface Modules (iRIMs) over a LAN. Each EIU supports up to 30 full duplexradio channels. The EIU provides the data interface to 30 iRIM channels, while the AcomRadio Interface Unit (RIU) card provides the analog voice interface to the iRIMs. 1 EIUand 5 RIU cards will support 30 iRIM channels (15 iRIMs). The EIU provides data

connectivity to Tetra iRIMs.

The EIU card, when used with iRIMs, adds the following features:

IP control of Tetra radios via the Zetron iRIM Handles up to 30 channels concurrently Line Subrack redundancy, the main/backup EIU sync via an Ethernet cross-over

cable on the 3rd LAN port for seamless changeover May be installed in ALS slot 1-11

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Block Diagram

9

Block Diagram

Figure 1: EIU Functional Block Diagram

PrimaryEthernet Port

10/100(J1- RJ45)

DRAM

BackgroundDebug Mode

Port(Factory Use

Only)

USB to UARTUSB Debug Port

(J4)

StandbyEthernet Port

10/100(J2- RJ45)

Network LayerProcessing

Transport LayerProcessing

ChameleonProcessing

Real Time Protocol (RTP)processing

TCP UDP

SerialComm

Controller

SCCEthernet

Controller

SerialComm

Controller

SerialManagement

Controller

10/100 MAC (Data LinkLayer Processing)

RedundancyLink Manager

SerialPeripheralInterface

RedundancyLink

10/100 MAC(J3- RJ45)

SRAM

FastEthernetController

FastEthernetController

Real Time ControlProtocol (RTCP)processing

Timeslot Assigner

Memory Controller

Ethernet AddressFiltering &Glue Logic

CPLD

FLASH

MemoryController

CPU

Transmit AudioPlayback Buffer 1

Serial-ParallelShift Register

Timeslot Assigner

Receive AudioPlayback Buffer 1

Parallel-SerialShift Register

ExpansionInterface(s)

FPGA(G.711)

Cross-Point Switch

BackplaneInterface

Status LEDs

HDLC

HDLC

CPU BUS

C P U

B U S

PCM PCM

MII MII

MIIMII

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Block Diagram

10 025-9620BC.1

Description of Major Functional Blocks

The following describes the major functional blocks illustrated in the above diagram.

Block DescriptionMicroprocessorSystem

The microprocessor system combines a CPU with internal HDLC communicationscontroller, memory, watchdog timer and reset circuitry to provide overallmanagement of the EIU resources. The microprocessor system controls the PCMsignal paths located in the FPGA and any option boards that are plugged into theexpansion interface. It handles communications to the Ethernet ports via FastEthernet Controllers and the FPGA.

Ethernet Controllers The Ethernet controllers for the Primary and Standby interfaces are coupled directlyto programmable logic (CPLD) for filtering off unwanted received multicast

packets. Unicast and broadcast addresses are unaffected.

Ethernet Ports IEEE 802.3 (10Base-T/100Base-T) ports for the Primary and Standby interfaces tothe communications network, and for the redundant link between the EIU cards.

FPGA Logic andInterface Circuits

Within the FPGA, transmit and receive audio is fed into CODECs handling theconversion between VoIP and PCM audio as well as -law to G.711 A-lawconversions. The PCM digital audio, as well as the various digital input and outputsignals for all channels, are conditioned by the FPGA to interface to the correct

backplane PCM bus and timeslot for each channel.

HDLC to Backplane An HDLC controller located inside the microprocessor is used to communicate withmaster controller card located in slot 0 of the subrack.

USB Port The USB port allows for card debugging, event monitoring, and firmware upgrades.

Status LEDs These LEDs show alarm, network and redundancy status conditions.

Expansion Interface This interface allows for adding hardware codecs and signal processing for future

options.

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Interfaces

11

Interfaces

Front Edge Layout

The front edge layout of the EIU card is illustrated below.

Figure 2: EIU Front Edge Layout

1234

Pin 1

J1 Primary Ethernet port

J2 Standby Ethernet port

J3 Redundancy link

J4 Debug port

Pin 1

Pin 1

Run LED

1234

A B

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Interfaces

12 025-9620BC.1

Rear Edge Layout

Standard backplane interface only. Supports installation in Acom Line Subrack or AcomDS3 Subrack.

Physical Layout

Figure 3: EIU Interface and Jumper Locations

This figure shows approximate locations of certain components. It is not to scale.

P2

RJ45

ACOM Ethernet Interface Unit

Run LED

StatusLEDs

BackplaneInterface

USB

RJ45

RJ45

P5

P3

JP4

JP3

JP2

JP1

P1

P4

J1 PrimaryEthernet port

J2 StandbyEthernet port

J3 Redundancy link

J4 Debug port

BA

AB

DS6 (LED)

DS7 (LED)

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Interfaces

13

LED Indicators

Run LED

The Run LED is green when the EIU is running and red when the EIU is in reset orhardware failure.

Status LEDs (EIU in ADS)

The following table describes the remaining bank of eight LED status indicators when theEIU is installed in an ADS, and after the EIU has had several seconds to boot up. If alleight LEDs are solid red, this indicates a corrupt firmware.

Table 1: EIU LED Status Indicators (when used in ADS)

DescriptionLED

Description A B

Green LCB online, connected console

Off No connected consoles1 1

Green LCB online, connected console

Off No connected consoles

Not used 2 2 Not used

Yellow Receive Remote Alarm, remote

host not in communication with other EIURed Consoles not connected

Off All alarms are clear

3 3

Yellow Receive Remote Alarm, remote

host not in communication with other EIURed Consoles not connected

Off All alarms are clear

LAN Ethernet link 1

Green Active LAN port

Yellow Standby LAN port

Red Physical LAN port error*

Red flashing Ping error

Off not configured

4 4

LAN Ethernet link 2

Green Active LAN port

Yellow Standby LAN port

Red Physical LAN port error*

Red flashing Ping error

Off not configured

* If both A4 and B4 LEDs are red, the card has not been programmed.

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Interfaces

15

Reset

Pressing the reset button on the slot 0 controller card results in a reset state for the EIUcard.

Settings

Most of the EIU configuration is performed in IMS (see Acom Software Installation andConfiguration , P/N 025-9529). Jumpers are used primarily for troubleshooting. For

jumper locations, see Figure 3.

Table 3: EIU Jumpers

Jumper Position Description

JP1On Reset card

Off*

JP2A* Self test on power up

B Bypass self test

JP3A* Use normal firmware

B Use failsafe firmware

JP4

On Factory programming setting to allowupdating the bootloader and failsafe code

Off* Default position for protection of

bootloader and failsafe code

* Default position

Connector Detail

Primary Ethernet (J1)

This provides the primary Ethernet connection to an Acom EVO console or Zetron iRIM by way of a LAN.

Each RJ45 Ethernet interface operates at 10/100Mbps autosense for LAN connectivity.The Ethernet interfaces host a HTTP server for web statistics, an FTP server for firmwareupdates, and a Telnet server for diagnostics.

Note The Ethernet interfaces have no default IP address, the ports aredisabled until configured in IMS.

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Interfaces

16 025-9620BC.1

Standby Ethernet (J2)

This provides the standby Ethernet connection to an Acom EVO console or Zetron iRIM,assuming the LAN has a redundant network configuration.

For the ALS EIU installation, all iRIM connections occur via the active J1/J2 port. ALAN fault will move the iRIM connections to the other interface.

For the EVO Console installation, both console groups operate via the active J1/J2 port.Loop1 and Loop2 will operate from the same interface until a fault causes a changeoverof both loops to the other interface.

The J1 and J2 Ethernet ports share a common Floating IP address that allows them to

seamlessly host incoming connections and communicate on whichever port is functional.The active port (indicated by LED) responds to messages while the inactive port doesnot.

Debug/Redundancy Link (J3)

When installed in an ADS, J3 provides telnet debug functionality only, it has no affect onredundancy.

When installed in an ALS, J3 provides the redundancy link between primary and standbyEIU cards. The redundant EIU card must be in a redundant Acom Line Subrack. The

cable between J3 on each EIU card is a Ethernet crossover, swapping pins 1,2 for 3,6.

Debug Port (J4)

This port provides a USB interface between the EIU and a local maintenance terminal viaa Type-B jack. The connected PC may use this interface to update firmware or issuediagnostic commands via a dumb-terminal such as HyperTerminal. The Debug Port

presents itself to the PC as a serial COM port with the following settings: 460,800 baud,no parity, 8 data bits, 1 stop bit, no flow control.

P1 BDM

Debug port for factory use only.

P2 Backplane Connector

Standard backplane interface.

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Installation

17

P3 and P4 JTAG

Debug ports for factory use only.

P5 Daughterboard Connector

Provides a daughterboard interface for future use such as additional codec support.

Installation

Card Placement

Note ADS slots are numbered from left to right, starting with slot 1.

ALS slots are numbered from left to right, starting with slot 0.

For use with Acom EVO Consoles, the EIU card can be installed in slots 2, 3, and 4 ofthe Acom DS3 Subrack (ADS).

For use with iRIMs, the EIU card can be installed in slots 1-11 of the Acom Line Subrack(ALS).

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Installation

18 025-9620BC.1

Description

Figure 4: EIU System Block Diagram (redundant ADS)

AudioFacilities

Dock

Acom EVOConsole #1

Acom DS3Subrack(ADS #n)

EIU

Acom DS3Subrack(ADS #1)

TCP/IPNetwork

E1 Loop

EIU

EIU

AudioFacilities

Dock

Acom EVOConsole #n

Up to 20 con soles

For redundancy theconsole may also havean inactive connection

to an EIU in analternative ADS rack

MCU4 ACU Acom

ConsoleExisting DS3 connections to

ACUs are supported and can bemixed in the same Acom system

TCP/IP C on trol &Mes saging

Unicast RTP Audio

TCP/IP Control &Messaging

Unicast RTP Audio

Figure 5: EIU System Block Diagram (redundant ALS)

Radio 1

iRIM

Radio 2

Radio 3

Radio 4

Radio 29

Radio 30EIU

Acom LineSubrack

(ALS)

EIURedundant

Ethernet

Acom LineSubrack

(ALS)

LANR

e d un

d an

c y L i nk

iRIM

iRIM

...

RedundantEthernet

...

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Alarm Generation

19

Alarm Generation

Table 4: EIU Alarms (ADS)

Alarm Generated Event

EIU x Packet Memory Exhausted The internal memory for packet pool is exhausted

EIU x Link y No Connection There are no Acom EVO Consoles connected to virtual port y.

EIU x Link y Disabled Virtual port y is configured as disabled in the EIU Port Optionsscreen.

EIU x Link y Shutdown Not used at this time.

EIU x Link y Remote Alarm One of the Acom EVO Consoles connected to virtual port y isconfigured for redundant operation and its connection to the otherEIU card has failed.

EIU x Reserved Not used at this time.

EIU x Link y Configuration The configuration of virtual port y is incorrect e.g. an incorrectmulticast address has been configured.

EIU x Link y LCB Missing There is no correctly configured Acom EVO Console connected tovirtual port y.

EIU x Link y RTP Audio Dropout There is a loss of audio due to network conditions.

EIU x Link y Backup Mode Change Not used at this time.

EIU x Ethernet z Ping Failed The Router IP Address device cannot be pinged from theEthernet port z.

EIU x Ethernet z Physical Fault There is a physical error, e.g. broken cable, on Ethernet port z.

EIU x Conference Exhausted The conferencing resources on the EIU card are exhausted andsome consoles may not hear all selected lines.

x refers to card A, B, or C. These letters represent EIU cards from left to right in slots 2, 3, or 4 of theADS.

y refers to the virtual port (1 or 2).

z refers to the physical Ethernet port (1 or 2).

Note Acom EVO provides a native IP interface between the consoleand the EIU. Each EIU supports two virtual links per physical link(the two Ethernet ports). Each virtual link supports one consolegroup (typically 5-10 consoles, depending on their useconfiguration). Only one physical link is used at a time, the otheris a standby link.

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Technical Specifications

LAN Interface

Physical Connector: RJ45 socketSuitable Cable: Cat-5 twisted pairData Format: 10Base-T or 100Base-T

Table 9: LAN Interface Specifications

Parameter Min. Typical Max. Units

Peak Differential Output Voltage 2.2 2.5 2.8 V

Receive Input impedance 22 K ohm

Differential Squelch Threshold 300 420 585 mV

Mean Time Between FailuresHardware Part Number MTBF (years)*

EIU 950-0860 20.97

* Using HRD5 model (temperature controlled locations)