NEC MH110 Instruction Manual

MH110/MH120
IP Wireless Telephone
Setup and Administration Guide
July,2005
Revision 1
NEC Business Solutions Ltd.
Doc. No: NEC-9123


i
MH110/MH120 IP Wireless Telephone Setup and Administration Guide - Revision 1
Contents
Introduction 1-1
Using this Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
How this Guide is Organized . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Document Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
MH110/MH120 IP Quick Start Guide 2-1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Quick Start Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
System Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
System Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
MH110/MH120 Mobile Handsets 3-1
Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Alphanumeric . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Voice mail Icon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Ringing and Tones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Audio Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Line Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Mobile Handset Configuration 4-1
The Admin Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

ii Contents
MH110/MH120 IP Wireless Telephone Setup and Administration Guide - Revision 1
Opening the Admin Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Entering and Editing Admin Menu options . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Alphanumeric String Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
IP Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
ESSID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
License Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Restore Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Site Survey Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Regulatory Domain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
NEC Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
OAI On/Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Set Admin P.W.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
User-defined Preferences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
License Management 5-1
Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Configuration Process. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
NEC VoIP Integration Factors 6-1
Voice Messaging Access. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
CODECs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
DHCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
TFTP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
DNS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Feature Programming 7-1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Feature Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Feature Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4
Line Appearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5

Contents iii
MH110/MH120 IP Wireless Telephone Setup and Administration Guide - Revision 1
Menu Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
Feature List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6
Testing a Mobile Handset 8-1
Certifying MH110/MH120 Mobile Handsets 9-1
Site Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
Site Survey Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2
Detect dBm coverage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2
Detect Overlap or Conflicts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
Confirm Supported Data Rates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4
Solving Coverage Issues. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4
Software Maintenance 10-1
Upgrade Mobile Handsets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
Normal Download Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
Download Failure or Recovery Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2
Troubleshooting Mobile Handset Problems 11-1
Access Point Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1
Configuration Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2
Mobile Handset Status Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2

iv Contents
MH110/MH120 IP Wireless Telephone Setup and Administration Guide - Revision 1

v
MH110/MH120 IP Wireless Telephone Setup and Administration Guide - Revision 1
Figures
Figure Title Page
2-1 NEC IP telephony server architecture example. . . . . . . . . . . . . . . . . . . . 2-4
3-1 MH110/MH120 Mobile Handsets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3-2 The Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
7-1 Programmable Line or Feature Keys. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
7-2 Feature Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4
9-1 Detect dBm coverage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2
9-2 Detect Overlap or Conflicts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
9-3 Confirm signal strength and data rates . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4

vi Figures
MH110/MH120 IP Wireless Telephone Setup and Administration Guide - Revision 1

vii
MH110/MH120 IP Wireless Telephone Setup and Administration Guide - Revision 1
Tables
Table Title Page
1-1 Document Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
2-1 MH110/MH120 Wireless Telephones Requirements . . . . . . . . . . . . . . . 2-2
3-1 Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
4-1 Admin menu options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4-2 Special Characters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4-3 Admin menu commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4-4 Wireless Telephone Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4-5 Wireless Telephone Configuration Components . . . . . . . . . . . . . . . . . . 4-5
4-6 Optionally configured components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
4-7 Navigation keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
4-8 Standby menu items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
4-9 User-defined preferences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
6-1 DHCP options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
7-1 Function key displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
7-2 Line key displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
7-3 Menu key displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
10-1 Normal Download Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2
10-2 Download Failure and Recovery Messages . . . . . . . . . . . . . . . . . . . . . 10-2
11-1 Mobile Handset Status Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2

viii Tables
MH110/MH120 IP Wireless Telephone Setup and Administration Guide - Revision 1

1-1
MH110/MH120 IP Wireless Telephone Setup and Administration Guide - Revision 1
1
Introduction
WelcometotheMH110/MH120 IP Wireless Telephone Setup and
Administration Guide. This document explains how to configure and
maintain the MH110/MH120 IP WirelessTelephone within the NEC Platform.
Chapter Topics •Using this Guide
•Document Conventions
Using this Guide
This guide is designed to make MH110 and MH120 Wireless Telephones
easy to configure and maintain. There are step-by-step instructions for
the procedures you need to perform.
How this Guide is Organized
Chapter 1
Introduction This chapter outlines how to use the manual, including the organization,
chapter layout, and conventions used in the MH110/MH120 Wireless
Telephone Setupand Administration Guide.
Chapter 2
MH110/MH120
IP Quick Start
Guide
This chapter contains a Quick Start Guide and descriptions for MH110/
MH120 IP UNIVERGE WL Mobile Handsets, which are mobile handsets
for workplace IP telephone systems.
Chapter 3
MH110/MH120
Mobile Handsets
This chapter discusses the requirements for the MH110/MH120 Mobile
Handsets and the items on their display.
Chapter 4
Mobile Handset
Configuration
This chapter describes how to configure the Mobile Handset.
Chapter 5
License
Management
This chapter details the process to properly configure MH110/MH120
UNIVERGE WL Mobile Handsets and download software via over-the-air
file transfer.
Chapter 6
NEC VoIP Integration Factors This chapter describes the mapping between the emulated NEC
DtermIP-16LD and the MH110/MH120 UNIVERGE WL Mobile Handsets.

1-2 Introduction
MH110/MH120 IP Wireless Telephone Setup and Administration Guide - Revision 1
Chapter 7
Feature Programming This chapter describes feature programming for the MH110/MH120
UNIVERGE WL Mobile Handsets.
Chapter 8
Testing a Mobile Handset This chapter describes tests that can be performed in an active wireless
area to verify proper registration and operation of each Mobile Handset.
Chapter 9
Certifying MH110/MH120
Mobile Handsets
This chapter explains how to conduct a preliminary Site Survey Mode
test.
Chapter 10
Software Maintenance This chapter describes how to upgrade and maintain software for the
MH110/MH120 UNIVERGE WL Mobile Handsets.
Chapter 11
Troubleshooting Mobile
Handset Problems
This chapter discusses problem sources that determine the best method
of approaching any specific situation when using and troubleshooting
Mobile Handsets.
Document Conventions
This guide uses the conventions listed in Table 1-1.
Table 1-1 Document Conventions
When you see: It means: Example
Boldfaced
Field names
Button names
Drop-down list names
Commands,keywords,orother
user input
Enter the ID in the Name field.
Click Save.
Select the names from the
Employees drop-down list.
Enter login admin at the command
prompt.
Capitalized
Menu names
Window names
Dialog box names
From the File menu, choose Save.
From the Directory window, select
Edit > Modify.
Click OK to save and close the
Account Properties dialog box.
Menu > Submenu
(boldfaced font) Menu paths Select Edit > Modify.
CTRL+S
CTRL+Shift+S
(boldfaced font) Shortcut keys PressCTRL+Stosave yourchanges.

Introduction 1-3
MH110/MH120 IP Wireless Telephone Setup and Administration Guide - Revision 1
Step-by-step instructions are numbered. If more than one option is
available to complete a task in a procedure, the options may appear as
follows:
Step 1 Do one of the following to add a field to the Employee directory.
—Select the desired field from the Employee field and click Add.
—Double-click the desired field from the Employee field.
Step 2 To select all of the available fields, click Add all.
F1 Function keys Press F1 to access the online help.
Click
Right-click
Click the left mouse button
Click the right mouse button
Click OK to save your changes.
Right-clickandselectDeletefromthe
shortcut menu.
Warning Usedtowarnagainstpossiblehuman
injuryorriskofdeathfromanactionor
event.
Caution Used when equipment or data could
be damaged by an action or event.
Important Emphasizes a MUST read statement.
Note Used to point out special details that
you must know or actions that you
must take relevant to your current
actions.
Tip Describes time-saving ideas and
other useful information for
completing procedures.
Reference Indicates a reference to another
related document.
When you see: It means: Example

1-4 Introduction
MH110/MH120 IP Wireless Telephone Setup and Administration Guide - Revision 1

2-1
MH110/MH120 IP Wireless Telephone Setup and Administration Guide - Revision 1
2
MH110/MH120 IP Quick Start Guide
MH110/MH120 IP UNIVERGE WL Mobile Handsets are mobile handsets
for workplace IP telephone systems. This chapter contains a Quick Start
Guide, system diagram, and descriptions for MH110/MH120 IP
UNIVERGE WL Mobile Handsets.
Chapter Topics •Overview
•Quick Start Guide
•System Diagram
•System Components
Overview
The Wireless Telephone operates over an 802.11b wireless Ethernet LAN
providing users a wireless voice over IP (VoIP) extension. By seamlessly
integrating with the NEC IP telephony system, Wireless Telephone users
are provided with high-quality mobile voice communications throughout
the workplace. The Wireless Telephone gives users the freedom to roam
throughout the workplace while providing all the features and
functionality of an IP desk phone.
The MH110/MH120 Wireless Telephone provides a wireless extension to
the NEC VoIP solutions. The Wireless Telephone supports the Protims
protocol, a proprietary protocol developed by NEC for communication
between a NEC DtermIP-16LD and a NEC PBX.

2-2 MH110/MH120 IP Quick Start Guide
MH110/MH120 IP Wireless Telephone Setup and Administration Guide - Revision 1
The Wireless Telephones reside on the wireless LAN with other wireless
devices using Direct Sequence Spread Spectrum (DSSS) radio
technology. The handset radio transmits and receives packets at up to
11Mb/s. The MH110/MH120 Wireless Telephone supports Wired
Equivalent Privacy (WEP) as defined by the 802.11b specification. NEC
offers the product with both 40-bit and 128-bit encryption. WEP
increases the security of the wireless LAN to a level similar to a wired
Ethernet LAN.
Quick Start Guide
Table 2-1 describes five conditions that must be met for MH110/MH120
Wireless Telephones.
Table 2-1 MH110/MH120 Wireless Telephones Requirements
NOTE
• IP multicast addresses are used by the MH120 Wireless Telephone system. This requires
that multicasting be enabled on the subnet used for the MH110/MH120 Wireless
Telephones, SVP Server, and Telephony Gateways.
• Routers are typically configured with filters to prevent multicast traffic from flowing outside
of specific domains. The wireless LAN can be placed on a separate VLAN or subnet to
reduce the effects of broadcast and multicast traffic from devices in other network
segments.
Requirements Descriptions
Wireless LAN AwirelessLANmustbeproperlyconfiguredand
operationalthrough the use of 802.11b wireless
access points (APs) listed on the Access Point
Compatibility matrix.
TFTP Server ATFTPServermustbeavailableonthenetwork
inordertoloadtheappropriatesoftwareintothe
Wireless Telephones.
Refer to Chapter 5, “License Management” for
detailed instructions for loading software on
Wireless Telephones.
NEC VoIP The supported NEC VoIP solution must be
connected to your network and completely
operational.

MH110/MH120 IP Quick Start Guide 2-3
MH110/MH120 IP Wireless Telephone Setup and Administration Guide - Revision 1
NEC SVP ServeThe NEC SVP Server, which facilitates
the QoS on the wireless LAN for the Wireless
Telephones, must be on the same subnet as
theWirelessTelephonesandhavetheproper
versions of software.
Note: Ensure you have the following versions:
• 173.xxx svp100.toc
• 174.xxx zvmlinux
• 175.xxx flashfs
Wireless Telephone Configure your Wireless Telephone to ensure
that it is associated with the Wireless LAN, has
theappropriatesoftware, andhas thecorrectIP
address for the supported NEC IP telephony
system.
Refer to Chapter 5, “License Management” for
detailed instructions about loading software on
Wireless Telephones.
Requirements Descriptions

2-4 MH110/MH120 IP Quick Start Guide
MH110/MH120 IP Wireless Telephone Setup and Administration Guide - Revision 1
System Diagram
Figure 2-1 shows the NEC components residing on a network with the
NEC IP telephony system, access points (APs), and wireless LAN
Ethernet Switched Hub.
Figure 2-1
NEC IP telephony server architecture example
SVP SERVER

MH110/MH120 IP Quick Start Guide 2-5
MH110/MH120 IP Wireless Telephone Setup and Administration Guide - Revision 1
System Components
•TheMH110 is a lightweight, durable handset specifically designed for
mobile workplace use within a facility using the supported NEC IP
telephony system and 802.11b APs in a wireless LAN.
•TheMH120 offers a durable design with push-to-talk functionality.
The MH110/MH120 functionality is provided by emulating the NEC
DtermIP-16LD. Among other features, the Mobile Handset can receive
calls directly, receive transferred calls, transfer calls to other
extensions, and make outside and long distance calls (subject to the
restrictions applied in your facility.) The Mobile Handsets are to be
used on-premises; they are not cellular or satellite phones.
UNIVERGE WL Mobile Handsets use Direct Sequence Spread Spectrum
radio technology (DSSS) to transmit audio packets over wireless LAN
APs that support SVP Server.
•SVP Server- SVP Serveris the NEC quality of service (QoS)
mechanism that is implemented in the Mobile Handset and AP to
enhance voice quality over the wireless network. SVP Server gives
preference to voice packets over data packets on the wireless medium,
increasing the probability that all voice packets are transmitted
efficiently and with minimum or no delay. SVP Serveris fully
compatible with the IEEE 802.11b standards.
The SVP Serveris an Ethernet LAN appliance that works
with the AP to provide QoS on the wireless LAN. All Protims packets to
and from the MH110/MH120 pass through the SVP Serverand are
encapsulated for prioritization as they are routed to and from the
supported NEC VoIP solution or other Mobile Handset.
SVP Serveris required for QoS because the current IEEE 802.11b
wireless LAN standard provides no mechanism for differentiating
audio packets from data packets. This standard is undergoing revision
to version 802.11e to provide all the functionality of SVP Server in an
industry standard, thus ensuring high-quality voice in a mixed client
environment. Once 802.11e is ratified, NEC and its 802.11b
technology partners will adopt the new specification.
•NEC IP System - NEC VoIP solution.
•Access Points - supplied by third party vendors, access points
provide the connection between the wired Ethernet LAN and the
wireless (802.11b) LAN. Access points must be positioned in all areas
where Mobile Handsets will be used. The number and placement of
access points will affect the coverage area and capacity of the wireless
system. Typically, the requirements for use of MH110/MH120 are
similar to that of wireless data devices.
Access points must utilize SVP Server. Contact NEC, or a certified
NEC distributor, for information about APs that support SVP Server.

2-6 MH110/MH120 IP Quick Start Guide
MH110/MH120 IP Wireless Telephone Setup and Administration Guide - Revision 1
•Ethernet Switch - interconnects multiple network devices, including
the SVP Server, the supported NEC IP telephony system, NEC
DtermIP-16LDs and the access points. Ethernet switches provide
the highest performance networks, which can handle combined voice
and data traffic, and are required when using the MH110/MH120
UNIVERGE WL Mobile Handsets.
Although a single Ethernet switch network is recommended, the
Mobile Handsets and the SVP Servercan operate in larger, more
complex networks, including networks with multiple Ethernet
switches, routers, VLANs, and/or multiple subnets, as long as the
SVP Serverand access points are on the same subnet.
However, in such networks, it is possible for the quality of service
(QoS) features of the SVP Serverto be compromised, and voice
quality may suffer. Any network that consists of more than a single
Ethernet switch should be thoroughly tested to ensure any quality
issues are detected.
•NEC DtermIP-16LD - The wired LAN desksets provided by NEC for
use with the supported NEC IP telephony system.
•TFTP Server - Required in the system to distribute software to the
Mobile Handsets. May be on a different subnet than the supported
NEC IP telephony device(s) and APs.
NOTE
The MH110/MH120 cannot “roam” from one subnet to another. If routers and multiple
subnets are in use, the Mobile Handsets must only use access points attached to a
single subnet, or be powered off and back on to switch to a different subnet.
Other manuals for MH110
2
This manual suits for next models
1
Table of contents
Other NEC IP Phone manuals

NEC
NEC UNIVERGE SV8100 DT7 SERIES User manual

NEC
NEC UNIVERGE MH240 User manual

NEC
NEC UNIVERGE User manual

NEC
NEC DT750 User manual

NEC
NEC SL1100 Installation instructions

NEC
NEC Inaset R2 User manual

NEC
NEC Univerge SV8100 User manual

NEC
NEC Dterm DTL-8R-1 User manual

NEC
NEC Univerge SV8100 User manual

NEC
NEC Univerge SV9300 User manual