En ONU 404&804 MGCP R4.1.2.5 Operation Guide

ONU 404&804 MGCP Optical Network Unit Operation Guide

Release R4.1.2.5

Part Number TBD Rev L02

Copyright © 2006 UTStarcom, Inc. All rights reserved.

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UNITED STATES GOVERNMENT LEGENDS:

If you are a United States government agency, then this documentation and the software described herein are provided to you subject to the following:

United States Government Legend: All technical data and computer software is commercial in nature and developed solely at private expense. Software is delivered as Commercial Computer Software as defined in DFARS 252.227-7014 (June 1995) or as a commercial item as defined in FAR 2.101(a) and as such is provided with only such rights as are provided in UTStarcom's standard commercial license for the Software. Technical data is provided with limited rights only as provided in DFAR 252.227-7015 (Nov 1995) or FAR 52.227-14 (June 1987), whichever is applicable. You agree not to remove or deface any portion of any legend provided on any licensed program or documentation contained in, or delivered to you in conjunction with, this User Guide.

UTStarcom, the UTStarcom logo, PAS, mSwitch, Airstar, WACOS, Netman, Total Control, and CommWorks are registered trademarks of UTStarcom, Inc. and its subsidiaries. The UTStarcom name, AN-2000, and the CommWorks logo are trademarks of UTStarcom, Inc. and its subsidiaries.

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Any rights not expressly granted herein are firmly reserved.

ONU 404 & ONU 804 (MGCP) Operation Guide

Contents

Direction to Safe Operation...................................................................................... 1

About This Guide...................................................................................................... 3

Introduction ........................................................................................................................3

Conventions.......................................................................................................................3 Notice ............................................................................................................................3

Text................................................................................................................................3 Figures and Screen Captures .......................................................................................4

Software WEB Setting .............................................................................................. 5

Introduction ........................................................................................................................5

System Configuration............................................................................................... 7

User Logon ........................................................................................................................7

Password Modification.......................................................................................................8 Network Settings ...............................................................................................................8

WAN settings.................................................................................................................8 LAN settings ..................................................................................................................9

HTTP settings..............................................................................................................10 System Status .................................................................................................................10

System status ..............................................................................................................10 Save and Reboot.............................................................................................................12

Update .............................................................................................................................13

Reset ...............................................................................................................................14

VOIP Settings.......................................................................................................... 15

MGCP Protocol Settings..................................................................................................15

Telephony Settings..........................................................................................................16

Switch Settings....................................................................................................... 19

Port Settings ....................................................................................................................19 Port Mirroring Settings.....................................................................................................20

VLAN Settings .................................................................................................................21

IGMP Settings .................................................................................................................23 STP Settings....................................................................................................................23

QoS Settings ...................................................................................................................25 Bandwidth Control Settings .............................................................................................26

MAC Settings...................................................................................................................28 VLAN For VOIP Settings .................................................................................................29

Glossary Explanation ............................................................................................. 31

ii

Operation Guide ONU 404 & ONU 804 (MGCP)

List of Tables Table 1 Mapping relation of DSCP priority and queue..............................................................26 Table 2 Mapping relations of TOS priority and queue...............................................................26

Table 3 Mapping relation of IEEETag priority and queue .........................................................26

iii


List of Figures Figure 1 User logon ....................................................................................................................7 Figure 2 Modify the password.....................................................................................................8

Figure 3 IP settings .....................................................................................................................9

Figure 4 Static IP settings ...........................................................................................................9 Figure 5 HTTP server settings ..................................................................................................10

Figure 6 Save and Reboot ........................................................................................................12 Figure 7 Update ........................................................................................................................13

Figure 8 Reset ONU .................................................................................................................14


Direction to Safe Operation

Read carefully the manual and each notice items marked on the product and follow the directions set forth.

• When AC power supply is applied, the double-wire AC single-phase connection should be adopted, where one of the two wires is live wire and the other is neutral wire, the specification of earth wire should meet the related regulation requirements.

• Before installation, AC or DC input current should be checked if the value is within the device allowable scope, meanwhile, it should be also checked if DC poles are set correctly and the grounding wire is connected properly.

• When the devices settled in different locations need connecting each other, the grounding wires in different locations may occur the electric potential difference, which may lead the damage to or lower the performance of the system, so the electric potential difference must be eliminated before connection.

• ESD may damage the device, so the ESD control wrist-strap should be worn while insert/extract or touch the circuit board.

• The environment IT room should meet the national relevant regulated requirements.

• The supply connection cable should not be subject to heavy pressure or be stepped on, protection cover should be placed if necessary.

• When operating the device, the heat-dissipating holes should be uncovered to prevent from any instability or abrupt crash of the system due to the overheat of chips incurred.

If there is any circuit board to be repaired, the delivery person should fill out the form for repair the failures and the related information, and pack the circuit board by ESD control packing bag in addition with pad over wrapped, put it in the packing box together with the form for repair to send to the company.


About This Guide

Introduction This manual is applicable to ONU 404 and ONU 804. This manual mainly serves as a operation guide for the users with certain acquisition to access network and VOIP knowledge. It is required that the user has good acquisition of knowledge in following fields:

• Ethernet Concepts

• Network telephone

• Next Generation Network(NGN)

• Voice Over Internet Protocol(VOIP)

• Session Initiation Protocol(SIP)

• Media Gateway Control Protocol(MGCP)

• Quality Of Service Concepts

• Routing Concepts

• Simple Network Management Protocol(SNMP)

Conventions This guide may contain notices, figures, screen captures, and certain text conventions.

Notice The following table lists notices icons used in this guide.

Icon Notice Type Description

Note Information that contains important features or instructions but is not hazard-related.

Caution

Information to alert of potential damage to a program, data, system, or device. If not avoided, may result in minor or moderate damage. It may also alert against unsafe practices and potential program, data, system, device damage.

Warning Information to alert of operations that may cause potential accident, casualty, personal injury, fatality or potential electrical hazard. If not avoided, could result in death or serious injury.

ESD Information that indicates proper grounding precautions are required before handling a product.

Text The following table lists text conventions in this guide.

4 About This Guide


Convention Description

Text represented by Courier New Font

This typeface represents text that appears on a terminal screen, including, configuration file names (only for system output file names), and command names, for example login. Commands entered by users are represented by bold, for example, cd $HOME.

Text represented by bold This typeface represents window names, dialog box names, tabs, field names, function names, directory, file names, process names, and commands in text, for example, set the Time field.

Text represented by [Menu] and [Menu/Sub-menu]

This square brackets represents menus such as [File], and [File/New]

Text represented by <Button>

This angle bracket represents button on screen, function key on the keyboard and icon names for example, click <OK>.

Text represented by Document Name

This typeface represents documents for reference, for example, Netman 2020 Installation Guide

Text represented by

# File format: This typeface represents files in Unix/Linux system files.

Figures and Screen Captures This guide provides figures and screen captures as examples. These examples contain sample data. This data may vary from the actual data on an installed system.


1Software WEB Setting

Introduction This operation guide applies to ONU 404 and ONU 804 when MGCP protocol is used by the two ONUs.

Configuration functions are listed as below:

• System Configuration

• VOIP Settings

• Switch Settings

1


2System Configuration

User Logon ONU factory default IP address setup is 11.0.0.2, MASK is 255.0.0.0; when IP address of the admin PC has been set up as same as the network route of ONU, the user may visit or set up devices via Internet Explorer.

Default user name: admin

Password: 888888

Figure 1 User logon

Caution: If the device layout is conducted upon the impossibility of getting the device IP address, the user may press on RES button for 1 second (port 1 showed in Error! Reference source not found.), the device will be set to the default configuration and reboot automatically.

2

8 Chapter 2 System Configuration


Password Modification Figure 2 Modify the password

Select “System” in the left menu, then go on to click “Security”, input the original user password in the box of Current Password, while the new password has been input in both boxes of Select Password and Retype Password, click “Submit”, being saved and restarted, the new password will come into effect.

Please note: currently the single user admin is supported whereas the new user is excluded.

Caution: For all parameters from WEB settings, the configured data cannot be transmitted to ONU apparatus unless the “Submit” button has been clicked. Part of the data would come to be effective after being saved and restarted.

Network Settings Select “Network” in the left menu to start the ONU network parameter setting including WAN, HTTP page layout.

WAN settings This page is to set wan IP address.

Chapter 2 System Configuration 9


Figure 3 IP settings

DHCP Client

If DHCP Client is checked,ONU will get dynamic ip from DHCP Server

Use follow ip

If Use follow ip is checked,ONU will use the static ip configured by user

IP Address: set WAN port IP address;

Subnet Mask: set WAN port mask;

Gateway: set default route gateway.

DNS Server IP Settings

DNS Server:set DNS Server Ip address

LAN settings This page is to set LAN IP address.

Figure 4 Static IP settings

IP Address: set LAN port IP address;



Subnet Mask: set LAN port mask;

HTTP settings The page settings include HTTP access port number, and whether to support password protection;

Figure 5 HTTP server settings

HTTP Server Port: set WEB access HTTP server Port, default port is 80;

HTTP Password Protection: select whether the logon password protection is required, which is enabled by default.

System Status Select “System” on the left side, the right side of page layout will show Home, Security, EponStatus, SwitchInfo, IGMP Info, wherein Security has been depicted in Password Modification.

Home page: display ONU software version and WAN IP addresses

System status

• EponStatus Page: display Epon status

- Epon status



• SwitchInfo Page:display Switch status

- Port status

- Port Mirror Status

- STP Status

- STP Path Cost

- Bandwidth Control Status

- VLAN Status



• IGMP Info Page:display IGMP Status

- IGMP Snooping Info

Save and Reboot • The user may select “Save/Reboot” in the left menu to conduct the save/reboot

command.

Figure 6 Save and Reboot

Save & Reboot: ONU device saves all lodged settings and then goes reboot to make new configuration take effect.

When you click this button, all settings will be saved to config file in flash, and new changed settings different from that have been saved last time will be saved to update config file in flash.

For table config such as vlan table,mac address table,sip service provider,if you have change their default value,for example,add a new record for vlan table,mac address table or sip service provider,the table record will be saved to update config file every time whether or not you change it this time.

When ONU is restarted, system will load configuration data from config file first, then load update configuration data from update config file and replace the settings which are different from what have been loaded from the config file.

The config file or update config file can be exported from the ONU and uploaded to TFTP server, and other ONUs can upgrade config file or update config file from TFTP Server. How to update the config files please refer to chapter ‘Update’

Save Only: The lodged settings are saved to config file in flash, new changed settings different from that have been saved last time will be saved to update config file in flash;

Reboot Only: ONU restarts directly without saving the settings;



Update • The user may select “Update” on the left menu to conduct the update command

Figure 7 Update

TFTP Server IP Address: set TFTP Server IP address

Image FileName: set Image FileName which will be upgraded from TFTP server

Config FileName: set config FileName which will be uploaded to or upgraded from TFTP Server

Update Config FileName: set Update config FileName which will be uploaded to or upgraded from TFTP Server.

Submit:

When this button is clicked, the TFTP Server IP Address, Image FileName, Config FileName, and Update Config FileName will be set and stored into the ram.

Action:

Upgrade image: get image from TFTP server, when it finish, ONU will be automatically rebooted to take effect new image.

Upgrade config file: get config file from TFTP server, when it finish, ONU will be automatically rebooted to take effect new config file.

Upgrade update config file: get update config file from TFTP server, when it finish, ONU will be automatically rebooted to take effect new update config file.

Upload config file: upload local config file to TFTP server

Upload update config file: upload local update config file to TFTP server.

Submit:

When correct filename is input and desired action is selected, click the ‘submit’ button, then system will executed corresponding action.



Note: How to save config file and update config file please refer to chapter “Save and Reboot”

Reset • Select “Reset” in the left menu, go on to click “Submit”, ONU will be set to factory

default configuration, and automatically reboot.

Figure 8 Reset ONU


3VOIP Settings

MGCP Protocol Settings

Call Agent/SoftSwitch Address: Set SoftSwitch or Call Agent address (no more than 64 letters);

Call Agent/SoftSwitch Port: Set SoftSwitch or Call Agent port number, default is 2727;

Enable BackupCA/SS: Set whether to enable Backup CA/SS;

Backup CA/SSAddress: Set Backup CA/SS addresses (no more than 64 letters);

Backup CA/SS Port: Set Backup CA/SS Port number, default is 2727;

If enabling SS, when the gateway is started, it will automatically try to find Backup SS/CA to register if it is unable to register to main SS.

Gateway Domain Name: Gateway domain name (no more than 32 letters), generally assigned by SS;

Gateway Port: Gateway protocol port, default is 2427;

Register mode: Select endpoint register mode;

- If Register mode is selected as All, gateway will use ‘*’ to indicate all the endpoints register to SS;

- If Register mode is selected as Single, gateway will determine whether to register to SS according to the endpoint settings;

Endpoint 1: Set the name of endpoint 1, default is aaln/1;

Endpoint 2: Set the name of endpoint 2, default is aaln/2;

Register: Select whether this endpoint registers to SS;

3

16 Chapter 3 VOIP Settings


Telephony Settings • This page layout providesCaller ID info property settings.

Modulation: provide FSK or DTMF Caller ID Type to select

• This page layout provides VAD (Voice Activity Detector) property settings.

Disable VAD: the voice activity will not be detected if this selection is made;

Enable VAD: the VAD is in function, and send standard SID when no voice activity is detected;

• This page layout provides Echo Cancellation property settings.

Disable Echo Cancellation: Echo cancellation function is prohibited;

Enable Echo Cancellation: Echo Cancellation function is in effect, other disposal selections are not adopted;

• This page layout provides DTMF Relay property settings.

DTMF Relay: set DTMF transmission mode during the communication;

NONE (IN AUDIO): DTMF signal is transmitted in voice stream;

RFC2833: DTMF is transmitted with RFC2833 standard;

• This page layout provides Hook Flash Time property settings.

Chapter 3 VOIP Settings 17


HookFlash Max Time (ms): Enter the maximum time, in ms, of Hook Flash. For a HookFlash to be detected there should be an on-hook occurrence followed by an off-hook occurrence within the entered HookFlash Max Time period. If HookFlash Max Time expires before an off-hook, an on-hook event will be sent.

If denounce time is configured, OffOnDebounce must be less than HookFlash MaxTime.

Volume Setting: This section configures Mic/Speaker gain

Additional Mic Gain: select additional mic gain from dropdown list,10 is maximum,-10 is minimum

Additional Speaker Gain: select additional speaker gain form dropdown list,10 is maximum,-10 is minimum

• This page layout provides Codec Preference property settings.

Codec Preference: this option is compliant with G711U,G711A,G729A codec, the priority can be arranged among these three types of coding with 1.2.3 from lower to higher levels, NONE indicates that codec is not used;

• This page layout provides TOS settings.

MGCP TOS Configuration: This section configures for the signal packet TOS.

Precedence:The default item is “Flash”.

Delay: The default item is “Normal”.

RTP TOS Configuration: This section configures for the voice packet TOS.

Precedence:The default item is “CRITIC/ECP”.

18 Chapter 3 VOIP Settings


Delay: The default item is “Low”.

• This page layout provides Fax Mode property settings.

Transparent: indicate that transparent mode is taken;

T.38: use T.38 fax protocol.


4Switch Settings

Port Settings Click “Port” on the top of this page layout, enter into port parameter setting interface shown as the figure below.

First of all, select the port to configure through “Select Port to config” selections. When the certain port is selected, the port setting can proceed. Finally, when the setting has been finished, click “Submit” at the bottom to submit the settings.

Each setting is depicted as follow:

• Select Port to configure

Select the port to configure, wherein four ports as LAN1,LAN2,LAN3,LAN4 can be set.

• Port Enable

Enable or disable the port, wherein True indicates Port Enable whereas False indicates Port Disable.

• Port Speed Duplex

Set port speed duplex, the selections are: auto-negotiation, half-10 (10Mbps half duplex), full-10 (10Mbp full duplex), half-100 (100Mbps half duplex), full-100 (100Mbps full duplex), full-1000 (1000Mbps full duplex).

• Port Flow Control Enable

4

20 Chapter 4 Switch Settings


Enable or disable Port Flow Control, wherein True indicates enable whereas False indicates disable.

• Port Priority

Set Port priority, the range is from 1 to 7.

• PVID

Set port default vlan, the range is from 1 to 4094.

Uplink Port Parameters:

• Flow Control Enable

Enable or disable Uplink Port Flow Control, where in True indicates enable whereas False indicates disable.

• PVID

Set Uplink port default vlan, the range is from 1 to 4094.

Port Mirroring Settings This product allows the user to make a copy of the data being from/to one or several certain ports to another port to facilitate the user to connect a monitoring apparatus (e.g. Sniffer or RMON Probe) to the port mirroring for checking the details of the data packets through previous port(s).

Click “Mirror” on the top, enter into port Mirroring parameter setting interface shown in the figure below:

Chapter 4 Switch Settings 21


Four settings are included: Monitoring Ingress Port, Monitoring Egress Port, Monitored Ingress Port, Monitored Egress Port. When the settings are finished, click “Submit” to submit them.

Each setting is described as follows:

• Monitoring Ingress Port

To select mirroring ingress port, when it is selected, the port only monitors the ingress of mirrored ports.

• Monitoring Egress Port

To select mirroring egress port, when it is selected, the port only monitors the egress of the mirrored ports.

• Monitored Ingress Port

To select which port ingress should be monitored

- Enable indicates that the ingress of the port is mirrored to the Monitoring Ingress Port.

- Disable indicates that the ingress of the port is not mirrored.

• Monitored Egress Port

To select which port egress should be monitored

- Enable indicates that the egress of the port is mirrored to the Monitoring Egress Port.

- Disable indicates that the egress of the port is not mirrored.

VLAN Settings Click “VLAN” on the top; enter into the setting interface illustrated as the figure below:




Vlan Ingress Filter Mode

• Note: VLAN Ingress filter

• No check: frames are not discarded if their vid is not contained in the vlan table

• Normal check: the vid must be contained in the vlan table or the frame is discarded

• Strict check: the vid must be contained in the vlan table and the ingress port must be a member of the vlan else the frame is discarded

Vlan port

• Vlan ID: select vlan to config via select box.

• New VLAN ID: add a new vlan ID.

• VLAN Name:set vlan name.

• VLAN Member:

- --: not a member,

- U: untagged member,

- M: tagged member



• VLAN Action: select actions to go:

- display, display vlan information.

- add, add a new vlan. When vlan has been set, action “add” must be selected, and click “Submit”, the newly added vlan can be in function then.

- edit, edit an occurred VLAN setting item, the modification of VLAN settings cannot be of effect unless “Edit” action is selected and “Submit” is clicked.

- delete, delete an occurred vlan.The vlan cannot be deleted unless the “delete” action is selected and “submit” is clicked.

IGMP Settings Click “IGMP” on the top; enter into the setting interface shown as the figure below:


• Snooping Enable: True, enable IGMP Snooping; False, disable IGMP Snooping.

• Aging Time: set IGMP snooping aging time. Range of value taken is from 60 to 900s.

• Fast Leave Enable: True, enable fast leave, False, disable fast leave.

STP Settings Click “STP” on the top; enter into the setting interface shown as the figure below:




STP Bridge Parameters

• Forward Delay Time: Forward Delay can be set to be any value range from 4 to 30s. Which is the time taken by any interchange port under the interception status when the block status is transferring to forward status.

• Hello Time: Hello Time can be set to be any value range from 1 to 10 s, which is the sending time interval between two note messages from root bridge BPDU packet for itself identification.

• Max Age Time: Max. Age time can be set to be any value range from 4 to 60s. If no BPDU has been received from Root Bridge after Max Age time, your packet switch will start to send its own BPDU to other all switches to identify itself as the root bridge. If your packet switch is approved as the lowest Bridge ID, it will be the root bridge.

• Enable Or Disable STP: True, enable STP; false, disable STP.

• Priority: can be any value among 0 to 65535. 0 refers to the highest priority, which will be used to identify the root packet switch in the election among the net switches. A lower value indicates a comparatively higher priority and possibility to be selected as the root switch.

STP Port

• Select Port to config: select the port to configure

• Priority: port priority may be any value among 0 to 255, wherein the smaller value indicates higher possibility as the root port.



QoS Settings Click “QOS” on the top of this page; enter into the layout interface illustrated as following.


• QOS Parameters

Schedule: used to set the schedule mode of priority alignment, which including Wrr and SpWrr options.

SPwrr ensures that high priority (priority of bigger number) business always to be processed prior to the lower ones; WRR (Weighted Round Robin) deals with the high priority operations at first, however the low priority operations are processed simultaneously based on the particular proportion.

• QOS Port Paramaters

Select Port to config: select the port to configure.

Mode Select: select port compliant mode of priority

Priority Select: select priority

• DscpPriority Queue

It is utilized to set mapping relation between DSCP priority and queue. Default as follows:



Table 1 Mapping relation of DSCP priority and queue

DSCP priority Queue

0~15 0

16~31 1

32~47 2

48~63 3

• TosPriority Queue

It is utilized to set the mapping relation between TOS priority and queue. Default as follows:

Table 2 Mapping relations of TOS priority and queue

TOS priority Queue

0~1 0

2~3 1

4~5 2

6~7 3

• IEEETag Priority Queue

It is utilized to set the mapping relations between IEEETag priority and queue. Default as follows:

Table 3 Mapping relation of IEEETag priority and queue

IEEETag priority Queue

0~1 0

2~3 1

4~5 2

6~7 3

Bandwidth Control Settings Click “Bandwidth Control” on the top of the page; enter into the interface showed as the figure below:




• Select Port to config

Select the port to configure for Bandwidth.

• Ingress Limit Mode

Four modes are displayed:

- 0:limit and count all frames

- 1:limit and count broadcast, multicast and flooded unicast frames

- 2:limit and count broadcast and multicast frames

- 3:limit and count broadcast frames

• Ingress Speed

Totally 13 grades of speed may be selected:

- 0( Not limited)

- 1(128K bits/sec )

- 2(256K bits/sec )

- 3( 512 bits/sec)



- 4(1M bits/sec )

- 5( 2M bits/sec)

- 6( 4M bits/sec )

- 7(8M bits/sec)

- 8(16M bits/sec, Note: supported only by Gigabit Ethernet Switch )

- 9(32M bits/sec, Note: supported only by Gigabit Ethernet Switch)



- 12(256M bits/sec, Note: supported only by Gigabit Ethernet Switch)"

• Egress Speed

Totally 13 grades of speed may be selected, and the values are same as above.

MAC Settings Click “MAC” on the top of the page, enter into the interface shown as the figure below:

When the settings have been finished, click “Submit” to save.


• MAC Address

Select MAC address to configure by the select box.



• Destination MAC Address

Add a new MAC address item.

Permission Select, Select the port to allow/forbid MAC address.

• Vid

Vlan id: appoint vlan to allow/forbid MAC address.

• Permission Select

Static refers to allow MAC address to pass.

Forbidden, indicates forbid MAC address to pass.

• Action

Select the action to go:

- display, display MAC address and its admin information.

- add, add a new MAC setting item. The newly added setting cannot be in effect unless the “Add” action is selected and “Submit” is clicked.

- edit, edit an occurred MAC setting item, the modification of MAC settings cannot be of effect unless “Edit” action is selected and “Submit” is clicked.

- delete, delete an occurred MAC setting item. The MAC settings cannot be deleted unless the “delete” is selected and “Submit” is clicked.

VLAN For VOIP Settings Click “VLAN FOR VOIP” on the top of the page, enter into the interface shown as the figure below:

• VLAN Tag Config

UnTag: If select UnTag option, voice stream from ONU without VLAN ID

Tag: If select Tag option, voice stream from ONU with VLAN ID configured as follows “VLAN ID”.

• VLAN ID

VLAN ID for voice stream. The VLAN ID must existed in VLAN table


AGlossary Explanation

Bandwidth The amount of data that can be transmitted in a fixed amount of time. For digital devices, the bandwidth is usually expressed in bits per second (bps) or bytes per second.

Backbone A backbone is a larger transmission line that carries data gathered from smaller lines that interconnect with it.

10Base-T One of several physical media specified in the IEEE 802.3 standard for Ethernet local area networks (LANs), is ordinary telephone twisted pair wire. 10BASE-T supports Ethernet's 10 Mbps transmission speed.

100Base-TX This designation is an Institute of Electrical and Electronics Engineers (IEEE) shorthand identifier. The "100" in the media type designation refers to the transmission speed of 100 Mbps.

1000Base-LX A specification for Gigabit Ethernet over fiber optic cabling (IEEE 802.3z), 1000Base-LX uses long wavelength laser over multimode and single-mode fiber

1000Base-SX A specification for Gigabit Ethernet over fiber optic cabling (IEEE 802.3z). 1000Base-SX uses short wavelength laser over multimode fiber.

Auto-Negotiation

Auto-Negotiation is a mechanism that takes control of the cable when a connection is established to a network device. Auto-Negotiation detects the various modes that exist in the device on the other end of the wire, the Link Partner, and advertises it own abilities to automatically configure the highest performance mode of interoperation. As a standard technology, this allows simple, automatic connection of devices that support a variety of modes from a variety of manufacturers.

Full Duplex Refers to the transmission of data in just one direction at a time.

Half Duplex Refers to the transmission of data in two directions simultaneously.

Collision Two stations sending on the same wire at the same time when they work at the half duplex mode.

A

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About UTStarcom www.utstar.com

Headquartered in the United States with sales, support, and manufacturing facilities worldwide, UTStarcom designs, manufactures, sells, and installs an integrated suite of wireless and wireline access network and switching systems. UTStarcom's complete suite of network equipment gives telecommunication service providers the means to cost-effectively provide efficient and scalable voice, data, and Internet services around the globe. Copyright ® 2006 UTStarcom, the UTStarcom logo, !-Volution, AIRSTAR, AN-2000, AN-FTTB, CommWorks, the CommWorks logo, iAN, iCell, Internode, Intranode, iPATH, ISP, MovingMedia, mSwitch, Next Generation Network Technology. Now, NGDLC, PAS, PAS Wireless, Seamless World, Softexchange, Sonata, Sonata Access Tandem, Sonata HLR, Sonata IP, Sonata MSC, Sonata WLL, Telos, Total Control, Unitech, WACOS, WICOPS, WLL, and Xtreme IP are registered trademarks or trademarks of UTStarcom, Inc. and its subsidiaries.

En ONU 404&804 MGCP R4.1.2.5 Operation Guide

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