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Megaco STATION
HARDWARE, INSTALLATION AND
MAINTENANCE MANUAL
NEC Unified Solutions, Inc.
Document Revision 4
INT-2023 (IPK)
Software Revision 3.0

Contents of this manual are subject to change without prior notice at the discretion
of NEC Unified Solutions, Inc. This document has been prepared for the use of
employees and customers of NEC Unified Solutions, Inc. and may not be
reproduced without prior written approval of NEC Unified Solutions, Inc.
Electra Elite is a registered trademark of NEC America, Inc. Microsoft is a
registered trademark of Microsoft Corporation.
Copyright 2005

NEC Infrontia, Inc.
6535 N. State Highway 161
Irving, TX 75039-2402
Technology Development

Document Revision 4
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iv
Table of Contents

Chapter 1
Electra Elite IPK IAD(8)-U( ) ETU
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SEC
TION 1
DESCRIPTION
The IAD (8)-U( ) ETU with Megaco Station Package is an optional interface package
for Electra Elite IPK KTS that can convert digital station ports into Megaco IP stations.
This ETU can be assigned as a ESI (8)-U( ) ETU and can support up to eight IP
Telephones.
The onboard 10/100 base T connector provides WAN/LAN connectivity. The
IAD (8)-U( ) ETU contains a regular TCP/RTP/IP stack that can handle real-time
media, supports industry standard Megaco (H.248) communication on the WAN side,
and interfaces with the Electra Elite IPK as a regular interface board. The IAD card,
from the network administration perspective, is an end-point on the IP network. For
the Electra Elite IPK system technician, it is just like any other Electronic Station
Interface.
This interface card can provide:
K
Megaco (H.248) signaling Protocol
K
DTMF generation
K
RTP port number designation
K
TOS field QOS support
K
G.711 and G.729a voice compression
K
10/100 BASE-T LAN interface
K
Echo Canceller
K
Remote configuration and maintenance
K
NAT - Network Address Translation Firewall
Refer to the Appendix E Electra Elite IPK IAD(8)-U( ) ETU Installation for instructions
for installing Echo Tuning in the IAD (8)-U( ) ETU hardware.
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SEC
TION 2
INDICATORS, SWITCHES, AND CONNECTORS
2.1
LED Indicators
A total of nine LEDs on this ETU are described in Table 1-1 Default Boot
Sequence: In Active IAD(8)-U10 ETU - Without IP Application Loaded.
2.1.1
Status LED
This LED chart shows the status of the IAD(8)-U( ) ETU during boot
up. The conditions change as the IAD(8)-U( ) ETU boots up and
passes through different boot states. This boot sequence will occur
with the IAD(8)-U10 ETU, when there is no IP Application loaded and
the card is at default.
Table 1-1 Default Boot Sequence: In Active IAD(8)-U10 ETU -
Without IP Application Loaded
D8
D6
D4
D2
D7
D5
D3
D1
D12*
State
Approximate Time
CH 1
CH 2
CH 3
CH 4
CH 5
CH 6
CH 7
CH 8
LIVE
1
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
FLASH
1 second
(from Cold Boot)
2
ON
ON
ON
ON
OFF
OFF
OFF
OFF
FLASH
5 seconds
3
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
FLASH
3 seconds
4
OFF
OFF
OFF
OFF
ON
ON
OFF
OFF
FLASH
5 seconds
5
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
FLASH
5 seconds
6
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
FLASH
5 seconds
* LIVE LED D12 also flashes when the ETU is receiving power from the KSU.
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The boot sequence shown below will occur on the IAD(8)-U10 ETU
when an IP Application has been loaded.
The IAD(8)-U10 ETU should not be removed
while booting up. Only after the ETU has
passed through states A~H, and all LEDs are
off, should the IAD(8)-U10 be removed.
Table 1-2 Active IAD(8)-U10 ETU - With IP Application Loaded
D8
D6
D4
D2
D7
D5
D3
D1
D12*
State
Approximate Time
CH 1
CH 2
CH 3
CH 4
CH 5
CH 6
CH 7
CH 8
LIVE
1
ON
ON
ON
ON
OFF
OFF
OFF
OFF
FLASH
1 second
(from Cold Boot)
2
OFF
OFF
OFF
OFF
ON
ON
OFF
OFF
FLASH
5 seconds
3
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
FLASH
3 seconds
4
ON
ON
ON
ON
OFF
OFF
OFF
OFF
FLASH
5 seconds
5
ON
ON
ON
ON
ON
OFF
OFF
OFF
FLASH
5 seconds
6
ON
ON
ON
ON
ON
ON
OFF
OFF
FLASH
5 seconds
7
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
FLASH
5 seconds
8
ON
ON
ON
ON
ON
ON
ON
ON
FLASH
5 seconds
* LIVE LED D12 also flashes when the ETU is receiving power from the KSU.
2.1.2
Hot Swap
The IAD(8)-U( ) does not require powering down the ETU or KSU.
The user can remove the IAD8)-U( ) ETU from the Electra Elite IPK
KSU the same way any other ETU is removed.
2.1.3
Ethernet Status
There are two built-in LEDs on the front of each RJ-45 connector to
indicate Ethernet connection status. These LEDs indicate data
transmission and reception (Transmit and Receive LED).
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2.2
Switch Settings
The IAD(8)-U( ) ETU has two switches that are described below.
Switch S1 is a Press to Reset switch.
Switch S2 is a Card Configuration switch. Refer to Table 1-3 IAD(8)-U( )
ETU Switches.
Table 1-3 IAD(8)-U( ) ETU Switches
ESI(8)-U10 ETU Mode
Reserved
Auto Sense
No. of Ports
of Operation
SW1
SW2
SW3
SW4
SW5
SW6
SW7
SW8
OFF
OFF
OFF
ON
ON
ON
OFF
OFF
Auto Card
Discovery
Number of Voice
1~3 always OFF
Selection - for
Mode Selection to
Ports - always ON
(Reserved)
ESI(8)-U( ) ETU
show simulated ETU
to enable 8 ports
simulation - must
be set to ON
2.3
Connectors
This ETU has the following connectors:
P1
Connects to the backboard
J1, J10, J11
Reserved for future use
J5
RJ-45 Ethernet connector for future use
J6
Default RJ-45 Ethernet connector
2.4
Installation
The IAD (8)-U( ) ETU can be installed in any KSU slot that supports the
applicable simulated ETU.
2.5
Pushbutton Switch
S1 is the reset switch.
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2.6
Environmental Conditions
The following environmental conditions apply for IAD (8)-U( ) ETU operation:
Operating Temperature: +32 to 104°F
(0 to 40C)
Operating Humidity:
10% to 90 % (non-condensing)
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Chapter 2
IPK IAD(8)-U( ) ETU Setup
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SEC
TION 1
INSTALLING THE IAD(8)-U( ) ETU
1.1
System Requirements
The IAD(8)-U( ) ETU can be viewed and installed like any other ETU used in
the KTS system. (Refer to Appendix E Electra Elite IPK IAD(8)-U( ) ETU
Installation.) However, the CAT5 Ethernet cable plugs into the Ethernet
connector on the front of the ETU, and not through the regular connections as
with other interface boards.
1.
Set the IAD(8)-U( ) ETU to desired card type in accordance with the dip
switch settings. (Refer to Table 1-3 IAD(8)-U( ) ETU Switches on page
1-4.)
2.
Place the IAD(8)-U( ) ETU in the Electra Elite IPK KSU.
3.
Connect the Ethernet cable to the J6 connector.
4.
The CH1~CH8 LEDs start to run indicating that the system is initializing
the IP networking parameters. The status LED is red. (Refer to Table
1-1 Default Boot Sequence: In Active IAD(8)-U10 ETU - Without IP
Application Loaded on page 1-2.)
5.
Once all LEDs are off and the status LED (D12) is flashing red, the IAD
(8)-U( ) ETU can be set up with the system.
1.2
Installation Precautions
As with all static sensitive devices, the ETU must be installed following the
Electra Elite IPK hardware installation general directions.
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Chapter 3
IPK IAD(8)-U( ) Programming
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SEC
TION 1
SYSTEM PROGRAMMING
The IAD (8)-U( ) ETU (Megaco Station) is recognized by the Electra Elite IPK system
as an ESI(8)-U( ) ETU. This ETU takes longer to initialize than the other Electra Elite
IPK ETUs and must be programmed using Memory Block 7-1 (Card Interface Slot
Assignment).
The following procedure provides the general directions for Electra Elite IPK
programming for the ETU Interface Slot Assignment.
1.
From port 01 or 02, enter the programming mode.
A H
2.
Press
,
, L, KandJ.
3.
Assign the Card Interface Slot Assignment by pressing LK7 and LK1.
4.
Press A, B or C for the cabinet number of KSU where the IAD(8)-U( )
ETU is installed.
5.
PressL to move the cursor to the right.
6.
Enter slot number (1~8) of the KSU containing the IAD(8)-U( ) ETU.
C
7.
Press
to change the page number (Page 2).
8.
Assign the ESI ETU and select LK1.
G
9.
Press
to write the data.
10.
If assigning the telephone type and station number:
H Assign the telephone type by pressing LK7 and LK2. (If assigning the Megaco
terminal, assign the port as: TEL = LK2.)
H Assign a station number on a per port basis. (Elite KSU Programming MB 4-10)

PC Programming can also be used to program the Electra Elite IPK system.
When programming the key telephone system, the IAD(8)-U( ) ETU (Megaco
Station) is always assigned as an ESI(8)-U( ) ETU.
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Chapter 4
IPK IAD(8)-U( ) Configuration
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SEC
TION 1
CONFIGURING IAD(8)-U( ) ETU
When installed for the first time, the IAD(8)-U( ) ETU, comes up with factory set default
parameters as shown in Table 4-1 Factory Network Settings.
Table 4-1 Factory Network Settings
Computer Name
neciad
IP Address
192.168.1.100
Subnet Mask
255.255.255.0
Default Gateway
192.168.1.1
In this configuration, the ETU cannot run in any randomly given environment, and its
parameters must be redefined before the IAD(8)-U( ) ETU can work in your environment.
The required parameters can be set by using your web browser and connecting to the default
IP Address (192.168.1.100) in the browser's navigation address bar. Refer to Appendix A
Setup and Configuration for a detailed description of the Web Base Configuration.
SEC
TION 2
PC PARAMETERS
The initial configuration is performed using a PC (or laptop computer) connected to the
IAD(8)-U( ) ETU using a crossover Ethernet cable (one-to-one connection) or connecting with
a hub. Make sure that the PC has the networking parameters set as shown in Table 4-2
Network Settings for the PC.
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Table 4-2 Network Settings for the PC
IP Address
192.168.1.XXX
Subnet Mask
255.255.255.0
SEC
TION 3
SAMPLE SETUP PROCEDURE
To setup the IAD(8)-U( ) ETU:
1.
Set the card type according to the settings specified in Table 1-3 IAD(8)-U( )
ETU Switches in Chapter 1 Electra Elite IPK IAD(8)-U( ) ETU on page 1-4 and
then install the ETU in the Electra Elite IPK KSU.
2.
Boot up a client enabled PC that is connected to the same network as the
IAD(8)-U( ) ETU.
3.
Connect to the IAD (8)-U( ) ETU via your Web Browser. Login to the IAD(8)-U( )
with the following:
Login ID = admin
Password = password
4.
Set the IP Address, Subnet Mask, Computer Name, and Default IP parameters
in the IAD (8)-U( ) ETU configuration tab. Select Submit.
5.
Set the Port settings fields to the desired operation: Encoding Preference,
Packet Size, Jitter Depth, and IP Address or DHCP selection for the IP
terminals.
6.
When all parameters have been configured, select Submit.
7.
Select the System tab, then select the Reset the Card option. The ETU goes
through a reboot cycle and may take a few minutes.
8.
Disconnect the crossover cable and connect the IAD (8)-U( ) ETU to the LAN
port.
The ETU is now ready for operation, assuming that the Electra Elite IPK system
has been programmed to recognize this ETU. In system programming, use
Memory Block 7-1 (Card Interface Slot Assignment) to ensure that the operation
mode is set to ESI(8).
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TION 4
SHUTDOWN PROCEDURE
The IAD(8)-U( ) ETU is a hot swappable ETU and can be removed from the Electra
Elite IPK KSU without powering down the IAD(8)-U( ) ETU or the Electra Elite IPK
system.
If the Electra Elite IPK KSU requires a system reset, the IAD(8)-( ) ETU will come
back online.
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Appendix A
Setup and Configuration
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This chapter describes all the screens used during the configuration of the NEC IAD
Trunk ETU [IAD (8)-U( ) ETU] (Megaco Station Package installed).
SEC
TION 1
ACCESSING SETUP
The IAD(8)-U( ) ETU Megaco station application is configured using an Internet browser.
It is recommended to use Microsoft© Internet Explorer 6.0 or higher.
The Login page allows users to enter their user name and password for their network
access.
Figure A-1 Web Browser Login Screen
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1.
Start your Internet Explorer from a PC that is connected to the same network as
the IAD(8)-U( ) ETU.
2.
The IAD(8)-U( ) ETU default IP Address 192.168.1.100.
3.
Enter the default IP Address in the address link of your browser.
4.
When the login screen appears enter the Login ID and password.
5.
Click OK.
K
Default Login ID = admin
K
Default Password = password

If the login fails due to incorrect user name or password, the login name is
presented again.
SEC
TION 2
CARD CONFIGURATION PROGRAM MENUS
This screen allows the user to set IP parameters for the IAD(8)-U( ) ETU (Megaco Station
Card) and other parameters that commonly apply for the operation of the
IAD(8)-U( ) ETU.
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Figure A-2 Setting IP Parameters
Host Name: (Default Value: neciad)
Enter the Computer Name for the IAD(8)-U( ) ETU. The IAD(8)-U( ) ETU is displayed as
a computer on the IP network.

When naming the host machine, the host name may contain only alpha characters,
numeric digits, and a dash. (A space and/or special characters are not allowed in the
host name field).
IP Address: (Default value: 192.168.1.100)
This is the static IP address that is needed for the configuration. If used in a DHCP
environment where a DHCP server on the LAN automatically allocates the IP address,
make sure that the IP address is marked as RESERVED on the DHCP server.
Default Gateway: (Default value: 192.168.1.1)
Enter the default gateway address for the IAD(8)-U( ) ETU in this field.
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Subnet Mask: (Default value: 255.255.255.0)
Enter the Subnet mask for the IAD(8)- U( ) ETU. This is the same one you have been
using on your subnet.
Starting RTP Port Number: Default value: (49150)
Use this field to specify the RTP port number to be used. NEC recommends leaving this
field at its default value, unless otherwise required by the network administrator.
Country: (Default value: North America)
Choose the country where this card will be operating. When operating the card in the
United States and Canada choose North America.
Media TOS: (Default value: C0)
IAD(8)-U( ) sets this value (in Hex) in the 1-byte TOS field for outgoing voice RTP
packets. Refer to IETF RFC791 and subsequent RFCs describing the usage of TOS field
in the Internet.
Signaling TOS: (Default value: C0)
IAD(8)-U( ) ETU sets this value (in Hex) in the 1-byte TOS field for outgoing Megaco
messaging UDP packets. Refer IETF RFC791 and subsequent RFCs describing the
usage of TOS field in the Internet.
Page Timeout: (Default value: 10 minutes)
The page timeout setting applies to the time Web Configuration Utility remains active.
Ethernet Interface (Default value: Auto Negotiate)
The Ethernet Interface setting allows for manual configuration of the Ethernet port
connection mode. This can be set to operate in the following port speed and duplex
mode: 10MB/Full Duplex, 100MB/Half Duplex, and/or 100MB Full Duplex. At default, this
will be set to Auto Negotiate. When set to Auto Negotiate, the IAD card will sense the
peer connection (wherever the cable is connected to (e.g. Hub, Switch, or Router)
hardware capabilities and negotiate the best possible speed and operation mode.

When set to Auto Negotiate, make sure that the peer (the other side of the Ethernet
cable) is capable of Auto Negotiate (some Routers may not have this feature).

When set to a default other than Auto Negotiate, make sure that the peer is configured
to operate in the same manner. Speed and duplex mode must match on both sides of
the cable.
Firewall IP Address:
Enter the IP Address of the Firewall Router that the IAD(8)-U10 ETU is placed behind.

The Firewall Router should be configured to forward all packets that are destined for the
IAD(8)-U10 ETU.
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Echo Suppressor Settings:
When a VoIP call is transferred to a 2-wire loop start circuit, it has a potential to generate
large side tone towards the VoIP path. Due to the nature of delays involved in a VoIP
communication network, the side tone can be heard as large echo at the distant end. The
IAD(8)-U( ) ETU has a built in echo canceller optimized for a standard loop start trunk.
However, as the loop start trunk characteristics vary depending on the distances from the
repeater/CO, further fine-tuning may be required for optimum echo performance.
K Echo Calibration (Default value: 0)
This field can be used to fine-tune the echo performance for a given trunk. If additional
fine-tuning is required, access the "Advanced" mode. If the advanced mode is select,
Echo Buffer, Calibration TX, and Calibration RX are made available for configuring.
K
Echo Buffer: (Default value: 0)
K
Calibration TX: (Default value:0)
K
Calibration RX: (Default value:0)
As a general rule of thumb, if the trunk is "hot", use the negative numbers.
The hotter the trunk, the larger the negative number.
Volume Setting
These fields are used to provide the attenuation applied to obtain adequate voice levels
for the end users. Altering this value is not recommended unless solving issues related to
voice quality or echo.
K Transmit Gain: (Default Values: 0)
K Receive Gain: (Default Value: 0)
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SEC
TION 3
PORT SETTINGS
Using this screen, the voice over IP parameters can be set per port.
Figure A-3 Port Setting Parameters
Port Number
This identifies the port number and active status.
Encoding Preferences: (Default: G.711 mu-law)
Select the preferred encoding protocol (codec) for making outgoing calls.
Packet Size (ms): (Default: 20 ms)
Use this field to select the preferred packet size.
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Jitter Depth (ms): (Default: 30ms)
The jitter buffer value must be at least 10 ms more than the largest packet size in your
preference selections. For better delay performance, keeping the minimum allowed value
is recommended.
IP Address:
If the IP phone uses static IP assignment, then use this field to specify the IP address for
each telephone.
Use DHCP:
Check this box if the IP phone obtains its address from a DHCP server on the network. In
this case, the IP phone uses its Extension Number to register with the IAD(8)-U() ETU.

The Extension Number assigned in Megaco Terminal programming must match Key
System Programming (MB 4-10). The telephone number will be assigned by the Elite
system according to the related port number.

If DHCP is used, and an extension number is changed on the KTS programming
(MB 4-10), then the IAD(8)-U( ) must be rebooted in order for it to operate properly.
The following example assumes that the IP Address 192.168.1.105 is assigned on Port 2
of the IAD(8)-U( ) ETU:
K
The station number for the IP Telephone (on Port 1) = 108
K
The station number for the IP Telephone (on Port 2) that has DHCP IP address
192.168.1.105 = 109
Extension: (Informational)
The extension ID is provided for informational purposed only. This extension is derived
from settings that have been made in Key System programming MB 4-10.

If MB 4-10 has not been configured prior to the IAD(8)-U10 ETU initializing, the
extension information will be displayed as "0" and will not become effective until the ETU
has been reinitialized.
Outside Firewall:
Select the outside firewall box, if your IP Phone is communicating outside of the firewall.
Enable Peer-to-Peer Connections.
Check this box to improve voice quality and bandwidth performance for calls between IP
phones.
When enabled, any two IP Phones will be sending the voice packets directly between
each other without traffic through the station card.

This function is only supported for IP terminals over the same subnet. This function is
not supported on IP terminals that are registered over the Internet.
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SEC
TION 4
TRACING
This page is used for analyzing any communication errors, and is intended for use by any
technical support personnel.
Figure A-4 Tracing Information
The tracing functions are not enabled at default. Consult your Technical Support prior to
enabling these functions.
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TION 5
SYSTEM
This page provides information about the firmware revision, card type and additional
administrator functions.
Figure A-5 System Parameters
The system page will provide access to five administrator functions.
K
Reset Card
K
Upload
K
Reset Password
K
Save System
K
Restore System
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TION 6
RESET CARD
A reset is necessary when changing the operating modes and network parameters (such
as IP address, Subnet mask, gateway address, TOS field etc.).
Figure A-6 Resetting the Card
K
Safe reset - When safe reset is selected, the IAD(8)-U() will only execute the
reset after all terminals are idle and on-hook.
K
Forced reset - If forced reset is selected, the IAD(8)-U() will reboot immediately
preempting any and all stations that are currently off-hook.
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SEC
TION 7
UPLOAD
The software package on the IAD(8)-U( ) ETU can be upgraded via the web browser.
Use this link either to upgrade the Megaco Station package, or to load any other available
package.
Figure A-7 Upload Parameters
When Upload is selected, you are prompted to enter the path name where the station
card package is located. Press Upload. Once the upload is completed, the IAD(8)-U( )
ETU must be reset.

This firmware is provided by NEC and must be stored on your local PC prior to firmware
upload.
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SEC
TION 8
RESET PASSWORD
Enables the "admin" user to change the current password. You cannot change the user
name from "admin".
Figure A-8 Reset Password Parameters
When changing the password, a maximum of 12 alphanumeric characters may be used
for the password. Select Submit to save the new password. Logout and log in again
using the new password.
The NEC IAD Configuration Utility may be logged in as follows at default:
Administrator
Login ID: "admin"
Password: "password"
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SEC
TION 9
SAVE SYSTEM
This option is used to save the Megaco Station configuration file to a hard drive or floppy
disk on the local programming PC.
Figure A-9 Save System Parameters
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SECTION 10
RESTORE SYSTEM
This option enables previously saved Megaco station configuration files (saved from Save
System link) to be restored.
Figure A-10 Restore System Parameters
Supply the file name for the saved configuration file. Select Restore. The system
requires a card reset after configuration has been restored.

Do not change file extension from .iad
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Setup and Configuration

Appendix B
Troubleshooting
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SEC
TION 1
INTRODUCTION
The IAD(8)-U( ) ETU (Megaco station) reacts to the other parts of the Electra Elite
IPK system exactly like an ESI(8)-U( ) ETU. Troubleshooting the features relating to
the mode of the ETU would follow the same methods used to troubleshoot the mode.
SEC
TION 2
COMMON QUESTIONS
This section answers some of the common questions encountered when using the
IAD(8)-U( ) ETU.
Question:
The Electra Elite IPK System cannot connect to the Megaco Station ETU at initial start
up.
Answer:
Ping 192.168.1.100
If you get a reply, verify that the IP address provided in the Connect screen of the
Configuration Utility exactly matches the IP address of the Megaco Station ETU. In
this case, it is 192.168.1.100.
If you do not get a reply to the ping, check your computer IP configuration by entering
winipcfg or ipconfig in the Start - Run menu. Make sure that your PC and the
IAD(8)-U( ) ETU are in the same subnet (the IP address of the PC should be
192.168.1.yyy).
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Question:
I have my IAD(8)-U10 ETU behind a Firewall Router. What settings are required on
the IAD(8)-U10 ETU?
Answer:
The IP Address of the Firewall Router must be configured on the IAD(8)-U10 ETU
page. Refer to Section 2 Card Configuration Program Menus on page A-2.
Helpful Hints:
When the IAD(8)-U( )ETU is behind a firewall router, the router should be
configured to forward all packets that are destined for the
IAD(8)-U( )ETU to be directed to the IP Address of the ETU.
Configure the firewall router to forward any packets that it receives on the
public side for UDP ports that are used for Megaco call control or UDP to
the IAD card.
Make sure that there are no Firewall restrictions against the IAD ETU
sending UDP traffic out on these Megaco and RTP ports.
Question:
The IAD(8)-U10 ETU has a public IP Address assigned to it and my IP Phone is
configured behind a NAT firewall router. I continue to get receiver "MGC not found" in
the display of my IP phone.
Answer:
Verify the following settings on your IP Phone:
1.
Set the MGC address in the IP Phone to the Firewall Address of the IAD card.
2.
On the Ports page of the IAD card's web configuration interface, uncheck the
"Outside Firewall" box for this IP Phone, since there is no firewall router on the
IAD ETU.
Question:
How do I adjust the echo setting via my IP Phone?
Answer:
Users can access the Echo Fine Tuning configuration mode by pressing "EXIT" +
"EXIT" + "HELP" + "FEATURE" + "EXIT".
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Question:
The Electra Elite system does not recognize the IAD(8)-U( ) ETU (Megaco station)
and IP terminal and displays NO PORTS IN KTS.
Answer:
Make sure the Electra Elite system is programmed for the same card type using
Memory Block 7-1 (Card interface Slot Assignment) as the operating mode of the
IAD(8)-U( ) ETU. For example, if the IAD(8)-U( ) ETU is in slot 3 of cabinet 1 and
operating as a ESI(8)-U( ) ETU (Megaco Station ETU), the Electra Elite IPK system
must be programmed, using a PC or handset, for a ESI(8)-U( ) ETU (Megaco Station
ETU) in slot 3 of cabinet 1.
Verify that the IAD(8)-U( ) ETU SW2 settings are configured for ESI mode.
SEC
TION 3
RETURNING THE IAD(8)-U( ) ETU (MEGACO STATION) TO DEFAULT
CONFIGURATION
To return the IAD(8)-U( ) ETU to the default configuration:
1.
Remove the IAD(8)-U( ) ETU.
2.
Set DIP Switches S2(1) ~ S2(8) in the ON position (factory default).
3.
Replace the IAD(8)-U( ) ETU in the KSU.
4.
When the bootup process is completed, the IAD(8)-U( ) ETU is restored to the
factory default configuration.
5.
The IAD (8)-U( ) ETU Default IP Address is: 192.168.1.100. The subnet mask is
255.255.255.0.
6.
Point the Internet Explorer (Version 5 or higher) on the PC to 192.168.1.100 by
typing this address in the navigation bar.

When you upload a package while in factory default mode, all configured data will
be lost, and default settings apply.
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Question:
What IP ports are needed for station card and IP Phone operation.
Answer:
For IP phones to operate with MEGACO Station card, the following ports are
necessary:
Application
Port Numbers
Comments
Megaco/H.248
2944 and 2945
TCP/UDP
Megaco Station Card
49150 ~ 49154
Starting RTP Port
IAD(8)-U( ) ETU
Megaco IP Phone
49152 ~ 49154
Starting RTP Port
Question:
What ports should I forward in my Firewall Router.
Answer:
Configure the firewall router to forward any packets that it receives on the public side
for UDP ports that are used for Megaco call control or UDP to the IAD (8)-U10 ETU.
K
Forward Megaco UDP port 2944
K
Forward RTP UDP ports 49150, 49152, 49154, 49156, 49158, 49160, 49162,
and 49164
This will allow eight phones on the WAN side to send their voice channel through to
the IAD card.
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Troubleshooting

Appendix C
IP Megaco Station Enhancements
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SEC
TION 1
INTRODUCTION
The IAD (8)-U10 with Megaco Station Package supports some network topologies
where the card is in one network address while the IP phone is in another network
address. This situation occurs when there is a router with NAT or port-forwarding
Firewall features that lies between the phones and the IAD (8)-U10 ETU.
Some networks layouts are supported, but some are not. It is important to
understand the details of the network layout and compare them to the examples in
this document. Most notably, if the card is behind one NAT and the phone is behind
another, there is no way to make them connect.
It is also important to configure the phone and card properly. Find the example that
matches your network and follow the step-by-step instructions for configuring the
devices.
SECTION 2
IAD(8)-U10 ETU AND ITH IP PHONE ON THE SAME NETWORK
If the IAD card and the IP Phone are on the same public or private network, you can
configure them to communicate over a WAN. Refer to the following example.
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WAN
IP Phone
Electra Elite IPK
144.168.33.4
IAD(8)-U10 ETU
144.168.20.2
To set up this example, follow these steps:
1.
Configure the IP addresses and net mask settings on the phone and IAD card.
Make sure that the Subnet mask and default gateway settings are correct.
2.
IP Phone - Set the MGC address in the IP phone to the address of the IAD card
"144.168.20.2".
3.
IAD (8)-U10 ETU -On the Ports page of the IAD card, enter "144.168.33.4" into
the IP address field of one of the phones, or check the DHCP.

Make sure that "Outside Firewall" box for this telephone is NOT checked.
4.
If you use the "DHCP" option, you must set the Extension in the IP phone to
match one of the station ports assigned to the IAD card in the IPK configuration.
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SECTION 3
IAD(8)-U10 ETU - BEHIND A PORT-FORWARDING FIREWALL
When the IAD (8)-U10 ETU is behind a firewall router, that router should be set up to
forward all packets that are for the IAD (8)-U10 ETU to the card, and the phone
should have the firewall's address as its MGC address. Refer to the following
example.
WAN
Firewall Router
Public Network Side
201.116.4.114
IP Phone
143.101.120.89
Firewall Router
Private Network Side
192.168.1.1
Electra Elite IPK with
IAD Megaco Station Card
192.168.1.2
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To set up this example, follow these steps:
1.
Configure the IP addresses and Subnet mask settings on the IP phone, firewall,
and IAD card.
2.
IP Phone - Set the MGC address in the IP phone to the public address of the
Firewall router, "201.116.4.114".
3.
Firewall Router -Configure the firewall router to forward any packets that it
receives on the public side for UDP ports that are used for Megaco call control
or UDP to the IAD (8)-U10 ETU.
a.
Forward Megaco UDP port 2944 to 192.168.1.2.
b.
Forward RTP UDP ports 49150, 49152, 49154, 49156, 49158, 49160, 49162, and
49164 to 192.168.1.2. This will allow eight phones on the WAN side to send their
voice channel through to the IAD card.
c.
Make sure that there are no Firewall restrictions against the IAD (8)-U10 ETU send-
ing UDP traffic out on these Megaco and RTP ports.
4.
IAD (8)-U10 ETU - On the Card page of the IAD card web configuration, enter
"201.116.4.114" into the Firewall IP address field. Enter "192.168.1.1" into the
Default Gateway field.
5.
On the Ports page of the IAD card, enter "143.101.120.89" into the IP address
field of one of the telephones, or check the DHCP box. Check the "Outside
Firewall" box for this telephone.
6.
If you use the "DHCP" option, you must set the Extension in the phone to match
one of the Station ports assigned to the IAD card in the IPK configuration.
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SEC
TION 4

IP PHONE BEHIND A NAT ROUTER
A common scenario puts the phone behind a NAT router at a worker's home or hotel.
The router does not do fixed port forwarding, but does set up associations for UDP
transactions using Network Address Translation. Refer to the following example.
WAN
Firewall Router
Public Network Side
143.101.120.110
Electra Elite IPK with
IAD Megaco Station Card
NAT Router
201.116.4.120
Private Network Side
10.0.0.1
IP Phone
10.0.0.11
To set up this example, follow these steps:
1.
Configure the IP addresses and Subnet mask settings on the phone, NAT
router, and IAD card.
2.
IP Phone -Set the MGC address in the phone to the public address of the IAD
card, "201.116.4.120".
3.
Enter an extension number into the phone that matches one of the station
numbers that is assigned to the IAD card.
4.
IAD (8)-U10 ETU -On the Ports page of the IAD card's web configuration
interface, check the DHCP box for the phone. Uncheck the "Outside Firewall"
box for this phone, since there is no firewall router on the IAD card side of the
WAN.
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SECTION 5
IAD(8)-U10 ETU AND IP PHONE BOTH BEHIND NAT OR
PORT-FORWARDING FIREWALLS - THIS APPLICATION IS NOT SUPPORTED
When the IAD is behind one Firewall or NAT Router, and the phone is behind another
Firewall or NAT Router, there is no way to configure the two devices so that they will
communicate properly.
This is true when each device is on a private network and neither can send packets to
the other through the Firewall/NAT routers.
Firewall Router
Public Network Side
143.119.8.143
WAN
Firewall Router
Public Network Side
201.116.4.114
Firewall Router
Private Network Side
10.0.0.1
Firewall Router
Private Network Side
Electra Elite IPK with
IP Telephone
192.168.1.1
IAD Megaco Station
10.0.0.109
Card
192.168.1.2
In this example, the telephone cannot send packets to the IAD card using the card's
192.168.1.2 address, and the card cannot send packets to the telephone using the
telephone's 10.0.0.109 address.
Even if both routers are configured to forward the UDP packets for call control and
voice, this topology cannot be accommodated. Instead, give the IAD card a public
address and set the firewall on the IAD side of the network to treat it as a public
network server. This will allow you to follow the instructions under "IP Phone Behind
a NAT Router" to set up the network.
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IP Megaco Station Enhancements

Appendix D
Glossary
___________________________________________________________________________________
The following terms are used within this document.
Term
Definition
ANSI
American National Standards Institute. A standards-setting,
non-government organization which develops and publishes standards
for "voluntary" use in the United States
Data Networks
The packet switched network that was originally designed for data traffic
(non-speech).
DSP
Digital signal processor (a reduced instruction set processor designed to
perform voice compression more efficiently than a general use
processor like Pentium).
Dynamic Host Control Protocol
A protocol for automatic TCP/IP configuration that provides static and
(DHCP)
dynamic address allocation and management.
Firewall
A system designed to prevent unauthorized Internet users from
accessing private networks connected to the Internet, especially
intranets.
G.711
Voice compression standard (64 kbits/sec)
G.729
Voice compression standard (8 kbits/sec)
Internet
The global digital network.
Intranet
A private digital network.
Jitter Buffers
Used by trunking gateways to reduce network delay effects and reorder
packets
Peer-to-Peer
Peer-to-peer is a style of networking in which IP Terminals communicate
directly with each other.
PSTN
Public switched telephone network (circuit switched that supports voice,
fax, and modem).
Media TOS
Media ToS is a Type of Service field for outgoing voice RTP (Real-Time Transfer
Protocol) packets.
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Term
Definition
Megaco
Media Gateway Control.
QoS
Quality of Service (reliability of real-time transmission in presence of
delays and dropped packets.)
Real-Time Transmission
Real-Time Transmission is transmission in which there is no perceived
delay in the transmission of a voice message or the response to it. This
is a requirement for voice traffic.
Routers
A router is a piece of equipment on digital networks that routes packets
of data to destinations according to their IP Address. The end-user
address on the internet can be static or dynamically assigned by a
Network Server.
TOS
Type of Service.
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Glossary

Appendix E
Electra Elite IPK IAD(8)-U( ) ETU
Installation
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SEC
TION 1
INTRODUCTION
The IAD (8)-U( ) ETU provides the hardware platform for providing Voice Over IP
connectivity for the KTS. By default, this card is shipped from NEC with a "platform
support" (factory default) firmware. A functional firmware is loaded as part of the
installation to support the desired VoIP functionality (for example, IP Megaco Station
package).
In this document, loading of a Megaco Station Card package on to the IAD(8)-U( )
ETU is provided. The same procedure applies for any other application package.
For the latest functional firmware, you may order a new Electra Elite IPK: IP Solutions
CD-Rom (NEC Part No. 750454) from NEC. Alternatively, you will find the latest IAD
packages on NEC support website at www.cng.nec.com.
Access to this website requires technician login privileges.
SEC
TION 2
INSTALLING IAD (8)-U( ) ETU PACKAGE
2.1
Description
The IAD (8)-U( ) ETU is and optional interface for the Electra Elite IPK KSU
that is used as integration device. The IAD (8)-U( ) ETU will support various
IP applications (e.g., IP CCH ETU application and Megaco Station
application).
Refer to Figure E-1 IAD (8)-U( ) ETU.
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2.2
INSTALLING THE ETU IN THE ELECTRA ELITE KSU
When the IAD(8)-U( ) ETU is used for the Megaco station application, this
ETU is assigned in the Electra Elite IPK system as an ESI(8)-U( ) ETU. This
ETU has eight ports, and installed in slots S1~S8 of the Electra Elite IPK KSU.
Figure E-1 IAD (8)-U( ) ETU
To install the ETU:
1.
Insert the IAD(8)-U( ) ETU in to any slot in the KSU. Make sure that all the
switches in S2 are set to the ON position (factory default).
2.
Once the LEDs CH 8(D1) and CH7(D3) are lit SOLID and the Status LED (D12)
is flashing red, connect your cross over cable or hub to Ethernet connector (J6)
on the IAD(8)-U( ) ETU. The IAD(8)-U( ) is ready to install your IP Application
package.
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3.
The IAD (8)-U( ) Card Default IP Address is: 192.168.1.100. Set your PC so
that it is statically assigned an IP address of 192.168.1.xx with a subnet mask
of 255.255.255.0 to ensure it is in the same network as the IAD(8)-U( ) ETU.
4.
Point the Internet Explorer (Version 5 or higher) on the PC to 192.168.1.100 by
typing this address in the navigation bar.

The Internet Explorer must not use any Proxy settings.
5.
Login using the following information:
Default Login ID = admin (lowercase)
Default Password = password (lowercase)
Figure E-2 Administration Screen
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6.
Upload the applicable IP Application package (e.g., trunk card package and
station card package). Select Upload.

This firmware is provided by NEC and must be stored on your local PC prior to
firmware upload.

Figure E-3 Welcome Screen
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7.
Congratulations, you have successfully loaded your application package. Wait
until the following screen is displayed.
Figure E-4 ETU Successfully Loaded Message
8.
You can now remove the IAD (8)-U( ) ETU and configure the Dip Switch
Setting to the applicable Mode of operation (if so required by the package you
loaded).
9.
Each application package behaves differently when in functional mode. So,
consult the documentation that is provided with the package prior to using it.
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2.3
Port Designations
The table below is a list of programmable and non-programmable port
numbers that are designated for the IAD(8)-U10 ETU and IP Applications.
Table E-1 Port Configurations
IP Application
IP Port Numbers
Comments
SIP Trunk Card
(Programmable)
SIP Trunk
49150 ~ 49166
UDP
SIP
5060
UDP
MEGACO Station
MEGACO/H248
2944/49152
UDP
MEGACO Terminals
49152/49154
Starting RTP Port
MEGACO Station Firmware
Starting RTP Port
49150/49166
Package
(Programmable)
H.323 Trunk
H.323 Trunk Firmware
(Programmable)
49150 ~ 49166
Package
UDP
H.323 Protocol
1719/1720
TCP
IP CCH-NEAX
(Fixed - Non-Programmable)
NEC Proprietary CCIS
56000 ~ 56258
UDP
SIP
5060
UDP
57000
TCP
IP CCH
(Programmable)
IP CCH Package
49150 ~ 49166
Starting RTP Port
SIP Protocol
5060
TCP
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MEGACO STATION
HARDWARE, INSTALLATION, AND
MAINTENANCE MANUAL
NEC Unified Solutions, Inc.
Document Revision 4

Document Outline