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Citel EXTender PBXgateway Скачать руководство пользователя страница 89

IP Dual Port PBXgateway and Remote System Administrator’s Guide

89

11 C

ONNECTING TO

O

THER

C

ITEL

P

RODUCTS

The PBXgateway and Remote can also connect with other Citel Technologies EXTender
products. Other PBXgateways and EXTenders offered by Citel are based on the same
configuration Management Interface as described in this document. The other products
discussed are multi-port versions (8 to 24 ports) that offer at least the same features and
functionality as the PBXgateway and Remote described in this document. For details on
the full EXTender product line refer to

www.citel.com

or contact Sales at 1-888-454-5828.

When the installation requires multiple EXTenders (Remotes) to connect to a single
PBXgateway the following

MUST

be configured properly for a successful connection:

1.

User ID

s on the Gateway and Remote

must

be configured

à

Path:

Gateway (and Remote) ->Configuration->Port

2.

Port Matching

on the Gateway should be disabled.

à

Path:

Gateway (and Remote) ->Configuration->Connect

Software Compatibility

PBX Type

PBXgateway
Type

Software
Version

EXTender Type

Software
Version

Connect
Type

Definity

8/12 port

V2.16r4

Remote

V3.61.8r1

IP

8/12 port BOCR

V3.43r2

Remote

V3.61.8r1

IP

24

port V2.16r4

Remote V3.61.8r1

IP

24 port GWII

V3.43r2

Remote

V3.61.8r1

IP

PBXgateway

V3.61.8r1

IP

4000 V2.16r4

IP

Magix

8/12 port

V2.16r4

Remote

V3.61.8r1

IP

8/12 port BOCR

V3.43r2

Remote

V3.61.8r1

IP

24

port V2.16r4

Remote V3.61.8r1

IP

24 port GWII

V3.43r2

Remote

V3.61.8r1

IP

PBXgateway

V3.61.8r1

IP

4000 V2.16r4

IP

IP Office

8/12 port

V2.16r4

Remote

V3.61.8r1

IP

8/12 port BOCR

V3.43r2

Remote

V3.61.8r1

IP

24

port V2.16r4

Remote V3.61.8r1

IP

24 port GWII

V3.43r2

Remote

V3.61.8r1

IP

PBXgateway

V3.61.8r1

IP

4000 V2.16r4

IP

PBX Type

PBXgateway
Type

Software
Version

EXTender Type

Software
Version

Connect
Type

Ericsson

8/12 port

V2.16r4

Remote

V3.61.8r1

IP

Document Number: M-4100-MUC

Version: Rev AA

© Copyright 2007 Citel plc All Rights Reserved

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Содержание EXTender PBXgateway

Страница 1: ...IP Dual Port PBXgateway and Remote System Administrator s Guide Document Number M 4100 MUC Version Rev AA...

Страница 2: ...damage suffered or incurred as a result of reliance upon or use of them Information in this publication is subject to change without notice Citel Technologies reserves the right without prior notice t...

Страница 3: ...f data or damage to an application system or device Highlights important information Contacting Citel Technologies Mail Citel Technologies 3131 Elliott Avenue Suite 250 Seattle WA 98121 Citel Technolo...

Страница 4: ...the PBXgateway 2 The Single Port Remote with FXO the Dual Port Remote with FXO and the Single Port Remote without FXO are referred to as the Remote Unless otherwise stated instructions for the dual p...

Страница 5: ...ected at the network interface 12 Unplug the product from the wall outlet before cleaning Use a damp cloth for cleaning Do not use liquid or aerosol cleaners 13 Do not operate the system if a chemical...

Страница 6: ...ent Console 22 Command Keys 23 Telnet Connection 24 Management Browser 25 Connecting to the Management Browser 25 Enabling the Management Browser 25 Configuring the Management Browser Parameters 26 Us...

Страница 7: ...nced System Utilities Administrator Password 57 Advanced System Utilities Administrator Password 58 Advanced IP Parameters Static Routes 58 Advanced IP Parameters Static Routes 59 Advanced IP Paramete...

Страница 8: ...8 11 CONNECTING TO OTHER CITEL PRODUCTS 89 Software Compatibility 89 12 FILE MANAGEMENT AND SYSTEM UPGRADES 91 Flash Files 91 Configuration File Management 91 Changing the Active Configuration File 91...

Страница 9: ...FCC Part 68 Statement 105 The Ringer Equivalence Number REN 106 Problems Repair and Warranty 106 Industry Canada Statements 106 Notice d Industrie Canada 107 Indice d quivalence de la sonnerie IES 10...

Страница 10: ...n site A simple IP connection will deliver the voice path and telephony features over the IP network to the corporate head office The physical location of the worker will be completely transparent How...

Страница 11: ...se 2 0 V9 0 Ericsson MD110 SW BC12 CXP1010101 3 P1U Nortel Meridian Opt11c R25 Version 2111 Issue 40 Norstar BCM3 5 Release 3 5 Build 2 3a Norstar BCM4 0 V4 0 2 03a Norstar MICS4 1 30NdG00 NAT V6 00 N...

Страница 12: ...S232 Cable 1 Remote Single or Dual Port with and without FXO Remote 1 Citel System Administration CD 1 Release Notes if required 1 Universal Power Supply A PUNIV 1 1 Power Cord 1 RJ45ST Patch Cable 1...

Страница 13: ...installed and functioning at the corporate site and the branch office supporting 10 100BaseT Ethernet interface The data connection between the corporate site and the Remote must be operational and co...

Страница 14: ...the voice parameters to match the IP network characteristics by adjusting the Jitter Delay and Packet size described in the Essential Port Setup of the PBXgateway section 7 The companding setting aLaw...

Страница 15: ...he telephone is connected to the Remote and linked to the PBX and not the location of the Remote To ensure that you reach the correct emergency service for your area use a telephone connected locally...

Страница 16: ...e of the unit hazardous voltages are present inside Do not attempt to modify the PBXgateway or Remote hardware Installation Diagram IP Network PSTN LAN Router Router IP Dual or Single EXTender 4100 Re...

Страница 17: ...Xgateway or Remote can cause damage to the units telephone sets or PBX line cards Remote left side of Figure 1 previous page 1 Place the unit in the destination location The Remote can either be wall...

Страница 18: ...45 to RJ 11 cable between port 2 on the rear of the PBXgateway and a port on the PBX 5 Disconnect the RJ 45 to RJ 11 cable between port 1 on the rear of the Remote and a supported digital set 6 Disco...

Страница 19: ...Microsoft HyperTerminal You may use a different terminal application if you are familiar with its use Only use the commands listed and described in this document unless otherwise instructed by Citel...

Страница 20: ...at fault You must correct this problem before you can use the HyperTerminal connection successfully See Direct Serial Connection on the previous page 8 Type the unit s password if one is set and pres...

Страница 21: ...The PBXgateway and Remote Management Console password is not set by default 6 It s strongly recommended that a password be set for security reasons See Changing Passwords for instructions 7 Make a not...

Страница 22: ...m in the example you are in the Configuration menu on the PBXgateway 2 Unit Name Typically used to identify the unit by its location user configurable 3 Software Version The version of software curren...

Страница 23: ...or R Refreshes the current screen Table 2 Command Keys Saving Changes You will be prompted to save if you attempt to log out of the Management Console when changes have been made You will also be aske...

Страница 24: ...gh the VT100 Terminal emulator HyperTerminal and begin configuration see Configuring the PBXgateway and Remote Or 4 Go to the Microsoft Windows Run application enter Telnet followed by the default add...

Страница 25: ...ement Browser uses JavaScript and Cascading Style Sheets CSS therefore you must enable JavaScript to obtain all the functions described in this document If you disable Cascading Style Sheets the funct...

Страница 26: ...amount of time a MB screen can be left idle no programming activity before terminating the session The timeout can be set for 30 minutes 1 2 or 3 hours or Never not recommended 2 Enabling the Web Refr...

Страница 27: ...wser Welcome Screen is presented see below Figure 8 The Management Browser Welcome Screen Important instructions on the use of the Management Browser should be read and fully understood before continu...

Страница 28: ...tion of the PBXgateway and Remote Simply follow the prompts to perform a basic configuration Refer to this manual for a full description of the features presented when running the Setup Wizard If it b...

Страница 29: ...ion Note This is a software reboot and will not reset all functionality as would a power cycle hard reboot From the Management Browser To reboot the system from the Management Browser go to Gateway Ut...

Страница 30: ...only must be set to deliver the DTMF tones out of band For more details refer to the description outlined in the PBXgateway Essential Port Setup Path Gateway Configuration Port Port_1 and Port_2 Refe...

Страница 31: ...h Remote Configuration Port Port_1 and Port_2 Refer to page 52 for full details 4 The Diversion parameter Ericsson PBX only is used to enable the PBX feature of forwarding of all calls when the user d...

Страница 32: ...ator assigns the IP Address Subnet Mask and Gateway Address for each Static Route if required Path Gateway and Remote Configuration IP Static_Routes Refer to page 50 and page 58 full details 11 The DN...

Страница 33: ...in order to reduce any unnecessary traffic on the network link 2 Setting User IDs A user ID maps which port on the Remote connects to a specific port on the PBXgateway There are several ways in which...

Страница 34: ...cting different voice compression methods can reduce network bandwidth requirements The four methods offered are i ADPCM32 60Kbps ii ADPCM24 50Kbps iii G 729A 30Kbps iv G 711 90Kbps It should be noted...

Страница 35: ...d then no data is sent across the network during silent periods of a conversation This will further assist in reducing bandwidth usage h Jitter Delay This is the amount of delay in milliseconds in sen...

Страница 36: ...the unit s IP Address A valid IP address for the PBXgateway must be entered in order for it to operate on the IP network The IP address should be obtained from the corporate IT Administrator prior to...

Страница 37: ...ccessed through the PBXgateway s Remote Login feature with Rlogin enabled The Remote Login feature is found here Path Gateway Remote Login For security reasons this feature is disabled on default 3 FT...

Страница 38: ...is recommended in order to reduce any unnecessary traffic on the network link 5 Setting User IDs A user ID maps which port on the Remote connects to a specific port on the PBXgateway There are severa...

Страница 39: ...The Connect screen is shown below Path Remote Configuration Connect RVP_Over_IP Port_1 and Port_2 Figure 15 Remote IP Destination Configuration Screen 1 Setting the IP Destination The IP destination i...

Страница 40: ...quipped with a DHCP server the address will be assigned automatically The unit s IP address is displayed with the system information Path Remote Status System General Info and can be viewed at any tim...

Страница 41: ...session By default Telnet is enabled 2 Rlogin The Remote management interface can also be accessed through the PBXgateway s Remote Login feature with Rlogin enabled For security reasons this feature...

Страница 42: ...in Analog port configuration screen is shown below If a user dials emergency services on the digital set at the remote location when the telephone is connected to the Remote and linked to the PBXgatew...

Страница 43: ...rough the PBXgateway and subsequently the corporate PBX Therefore none of the PBX features will be available Only features supplied by the PSTN will be available to the user iii The Analog port can be...

Страница 44: ...of the Emergency Number is to route a predetermined dial string to the Analog port automatically For example if the Emergency Number was 911 or 999 and the user goes offhook and dials 911 or 999 this...

Страница 45: ...rs of text to identify the user of a specific port Typically the user s name would be entered i e John Smith 2 Setting a Connect Password A Connect Password restricts access to the telephone port and...

Страница 46: ...s next to the software revision see above This makes it easier for an administrator when managing multiple sites Typically the geographic location of the unit is input Seattle Office for example Any t...

Страница 47: ...ties System Set Date Figure 23 PBXgateway Time and Date Configuration Screen 1 Set Date Adjust the fields to show the correct time and date The Daylight Savings field has been updated to reflect the n...

Страница 48: ...tor password can be a maximum of 10 digits and it restricts unauthorized access to the Management Console MC It is important to set an administrator password because the unit s password is blank no pa...

Страница 49: ...nformation should be obtained from the corporate IT Manager prior to configuring the unit More on Differential Services Each RVP_Over_IP voice packet contains a Type of Service ToS byte Within this by...

Страница 50: ...s configuration screen is shown below Path Gateway Configuration IP Static_Routes route_1 and route_2 to route_10 Figure 26 PBXgateway Static Routes Configuration Screen The Administrator assigns the...

Страница 51: ...e Server configuration screen is shown below Path Gateway Configuration IP DNS Figure 27 PBXgateway Static Routes Configuration Screen 1 Setting DNS to Enabled Yes will enable DNS and No will disable...

Страница 52: ...te across the network Normally if the user was not connected the set would display Press 1 to connect but with auto connect enabled the ports would attempt to connect automatically at different time i...

Страница 53: ...6 Configuring the Line Signaling Nortel Norstar PBX only On some installation environments a clicking noise may be present in the audio path This is caused by errors in the duty cycle of the signaling...

Страница 54: ...low the administrator to set when the ports will fall in to Call Suspend Typically at the end of the business day The timeout can be set for between 5 and 240 minutes 3 Configuring the Minimum Connect...

Страница 55: ...ee below c Voice Mode If a voice call is detected on the port it will wake from Call Suspend 6 Configuring the Indicators Used in conjunction with Lamp Mode above these are the line keys that will be...

Страница 56: ...shooting should the need arise 3 Setting the Gateway Time Offset Enter a value that represents the time difference between the PBXgateway and the Remote This is used to compensate for the time differe...

Страница 57: ...ilities System Set Date Figure 31 Remote Time and Date Configuration Screen 1 Set Date Adjust the fields to show the correct time and date The Daylight Savings field should be left at disabled as this...

Страница 58: ...ator password can be a maximum of 10 digits and it restricts unauthorized access to the Management Interface MI It is important to set an administrator password because the unit s password is blank no...

Страница 59: ...e Static Routes screen is shown below Path Remote Configuration IP Status_Routes route_1 and route_2 to route_10 Figure 33 Remote Static Routes Configuration Screen The Administrator assigns the IP Ad...

Страница 60: ...S Domain Name Server configuration screen is shown below Path Remote Configuration IP DNS Figure 34 Remote DNS Configuration Screen 1 Setting DNS to Enabled Yes will enable DNS and No will disable DNS...

Страница 61: ...e log cannot be undone Messages are permanently removed Usage Used during trouble shooting It clears the log of any unnecessary log messages when tracking issues Dependencies none Dump All Path Gatewa...

Страница 62: ...Fatal Unit is not functioning Error Failure Warning Problem with unit but still operational Info Remote session someone connected Debug Detailed message Trace Packet type tracing For example if the lo...

Страница 63: ...sion method being used Compression Bandwidth per Telephone G 729A 30 Kbps ADPCM24 50 Kbps ADPCM32 60 KBPS G7 11 90 Kbps Table 4 Determining Voice Compression The total amount of bandwidth required for...

Страница 64: ...being extended the following formula will assist in calculating the required bandwidth A x 30 B x 50 C x 60 D x 90 E where A number of ports using G 729A B number of ports using ADPCM32 C number of po...

Страница 65: ...ote is to flag error or failure conditions and automatically notify the administrator Trap The SNMP mechanism permitting a device to send an alarm to the administrator s work station MIB The administr...

Страница 66: ...MI Status Menu vs MIB Table This is an example of the MIB files internal group in this case it s the extInfoTable A few of the status items are highlighted to demonstrate how they coincide with the M...

Страница 67: ...tatTable Status Port extDiagnosticTable Status System HW Diagnostics extPortTable Status Port Port Stats extAlarmNotificationGroup The LOG messages that appear in the LOG extSnmpControlGroup Configura...

Страница 68: ...me extInfoTable extInfoPort Ports 1 2 extInfoCurrentState State of port UP RD NC XX VC AN CS extInfoDuration The duration in current state extInfoExtended Indicates if port is extended extInfoOffHook...

Страница 69: ...inutes the Port has been UP extPstatRDcount The number of minutes the User Port has been RD extPstatRDaverage The average number of minutes the Port has been RD Group Name extDiagnosticsTable extDiagT...

Страница 70: ...to send 5th trap message extTrapHost6 The IP address or HOST name to send 6th trap message extTrapHost7 The IP address or HOST name to send 7th trap message extTrapHost8 The IP address or HOST name to...

Страница 71: ...e to read the PBXgateway and Remote status tables and to receive readable SNMP Trap error messages Work with the following files mibs Remotexxxx mib where xxxx refers to the Remote release Copy to c o...

Страница 72: ...the Trap Error messages sent by the PBXgateway or Remote Trap messages correlate with log messages within the MI Defining a Fatal Trap Here is an example of setting up HP Openview for Windows to recei...

Страница 73: ...dd Trap window 2 In the box Number type 4 3 In box Name type Gateway or Remote Info 4 In box Severity select choice Informational 5 In box Description type E 1 6 Click on the OK button Viewing the Cus...

Страница 74: ...to monitor if there are lost signal conditions Use your SNMP manager to browse the Remote mib and create a TRAP condition on the object name extStatLostSignalStat Get the current threshold value for...

Страница 75: ...og file information is to be written to 3 ID The ID is used to identify the specific unit that the log is being generated from The range is from local0 to local7 4 Default Priority Allows for the sele...

Страница 76: ...lication such as Kiwi Syslog Daemon is a freeware Syslog Daemon for Windows It receives logs displays and forwards Syslog messages from hosts such as Citel s EXTender products routers switches Unix ho...

Страница 77: ...ation Remote Phone System Messages A chart listing error messages that are displayed on the Remote phones Baseline Checklist The Baseline Checklist is a logical list of items that are associated with...

Страница 78: ...tly if connected directly to the PBX port Verify that the correct PBX is selected Status LEDs When the units are powered up a series of self diagnostic tests are performed and displayed as a series of...

Страница 79: ...LED Off Self Test Status LED 1 Solid Green Status LED 2 Off Analog Port LED Off ROM Countdown Status LED 1 Solid Green Status LED 2 Off Analog Port LED Green Flicker Loading Image Status LED 1 Green...

Страница 80: ...rmware Status LED 1 Solid Green after Flicker Status LED 2 Off System firmware load Failed Status LED 1 Green Flashing Status LED 2 Green Flashing Table 9 System Status LEDs Port Status LED After the...

Страница 81: ...tus LED 2 Green Flicker Phone EXTended and onhook Status LED 1 Green with off Blink Status LED 2 Green with off Blink Phone EXTended and offhook Status LED 1 Green Flashing Status LED 2 Green Flashing...

Страница 82: ...nly uses 8Kbps for its audio path plus overhead It therefore dramatically reduces the amount of network bandwidth required to extend multiple telephones It also provides excellent voice quality to all...

Страница 83: ...PSTN trunk lines Most likely they are analog and those analog lines are generating a great deal of echo when interfacing with your PBX Non extended PBX telephones may not perceive the echo due to the...

Страница 84: ...analog trunk lines If you have analog trunks on your PBX the echo canceller frequently takes a second or two to detect levels of what is echo and what is voice and then it starts to cancel the echo T...

Страница 85: ...thernet Interface A large number of collisions shown here could indicate network traffic problems Path Gateway Remote Status IP Enet Interface LAN Figure 42 Ethernet Interface Status Screen IP Receive...

Страница 86: ...icate network traffic problems Path Gateway Remote Status IP IP Active Figure 44 IP Active Status Screen ARP Table Make sure the default gateway can be seen from this status screen Path Gateway Remote...

Страница 87: ...es Figure 46 IP Routes Status Screen General Information Screen This will list all the pertinent system information The information shown here is used to verify software release IP information and sys...

Страница 88: ...nection to the PBX or KTS is lost Check network links Attempt to reconnect when network running properly Connect rejected The PBX or KTS rejects the connection attempt Verify connect password Check ne...

Страница 89: ...figuration Port 2 Port Matching on the Gateway should be disabled Path Gateway and Remote Configuration Connect Software Compatibility PBX Type PBXgateway Type Software Version EXTender Type Software...

Страница 90: ...t BOCR V3 43r2 Remote V3 61 8r1 IP 24 port V2 16r4 Remote V3 61 8r1 IP 24 port GWII V3 43r2 Remote V3 61 8r1 IP PBXgateway V3 61 8r1 IP 4000 V2 16r4 IP PBX Type PBXgateway Type Software Version EXTend...

Страница 91: ...nsion They contain specific information for the PBXgateway and Remote boot process IP addressing active configuration file firmware for boot The PBXgateway saves cbk files to allow it to contact remot...

Страница 92: ...message is displayed asking you to confirm that you want to save your changes to the file you selected earlier Type Y es to save the changes to that file N o to discard your changes or S pecify to spe...

Страница 93: ...h file system 2 File Upload 3 File Upgrade The PBXgateway and Remote units use image files with the mab extensions File Management Examining the Flash File System This procedure determines how many im...

Страница 94: ...the system to be rebooted and this will cause active phones to be taken out of service for a few minutes Path Gateway Remote Utilities Upgrade Default Image Type Y es to make the changes specified and...

Страница 95: ...in use Select a file to delete and press Enter Type Y es to confirm that you want to delete the file Optimizing the Flash File System Optimizing speeds up the subsequent file upload Path Gateway Remot...

Страница 96: ...s Run Application The following screen is presented Figure 53 FTP session 2 Press Enter at the User prompt 3 At the Password prompt press enter if there is no password If a password has been set enter...

Страница 97: ...set up Telnet and FTP see the PBXgateway s Essential IP Parameters Telnet Rlogin and FTP section and the Remote s Essential IP Parameters Telnet Rlogin and FTP section within this document Path Gatew...

Страница 98: ...Enter to download the image file to the unit The file transfer begins and the transfer status is indicated by a stream of dots across the screen The transfer should take approximately 15 minutes 6 Wh...

Страница 99: ...m Session Hit Ctrl X 5 times to cancel the upload go to the HyperTerminal menu bar and select Transfer and then Send File 5 Browse to the location of the file on your PC highlight the file with the ma...

Страница 100: ...ter to continue 6 A dialog box listing the files that can be transferred appears Choose the file and press Enter 7 When asked to enter the destination filename type the name of the file leaving off th...

Страница 101: ...nes to be out of service for a few minutes 1 Path Utilities Upgrade Image File 2 Select the image file the file you uploaded and press Enter 3 The image file is verified and if it fails an error promp...

Страница 102: ...nect Parameters Console Baud Country Code Administrator s Password View IP Information Ping IP Host View System Info Default Route Accessing the Phone Set Interface Press Hold key on the telephone fou...

Страница 103: ...1 Prv 2 Ok 3 Nxt Nxt Set Country Code 1 Prv 2 Ok 3 Nxt Admin Password 1 Prv 2 Ok Nxt Enter Country Code EXIT to Accept HOLD to Cancel to delete Ok Console Baud 1 Prv 2 Ok 3 Nxt Nxt Choose baud rate u...

Страница 104: ...Interfaces Ethernet RJ 45 10 100Mpbs Half Full Duplex Management Serial RS 232 RJ45 Telephone Custom cable supplied by Citel RJ 45 on the end terminating to the EXTender 4100 and RJ 11 terminating to...

Страница 105: ...onnected FCC Part 68 Statement Models E 4100 Equipped with the optional Analog card this equipment complies with Part 68 of the FCC Rules and the requirement adopted by ACTA of the United States On th...

Страница 106: ...s telephone equipment or for repair or warranty information please contact Citel Technologies at 1 888 454 5828 If the equipment is causing harm to the telephone network the telephone company may requ...

Страница 107: ...s comme le prescrivent les documents concernant les exigences techniques relatives au mat riel terminal Le Minist re n assure toutefois pas que le mat riel fonctionnera la satisfaction de l utilisateu...

Страница 108: ...event potential negative consequences for the environment and human health which could otherwise be caused by inappropriate waste handling of this product This symbol on the equipment indicates that t...

Страница 109: ...ter V 8410D Avaya Definity Add on Modules XM24 EU24 Avaya Magix 4400 4412D 4400D 4424D 4406D 4424LD Avaya Magix Add on Modules DSS 4450 Avaya IP Office Magix selected as protocol Definity selected as...

Страница 110: ...e 16 Supported Telephones Ericsson Nortel Meridian M2006 M3901 M2008 M3902 M2216 M3903 M2616 M3904 M2616CT M3905 Nortel Meridian Add on Modules NT2K22 NTMN66 Table 17 Supported Telephones Nortel Merid...

Страница 111: ...quired by the user B Bandwidth A measure of the capacity of a communications channel The higher a channel s bandwidth the more information it can carry BAUD The rate of data transmission based on the...

Страница 112: ...ady to receive instruction i e make a call DiffServ Is an architecture for providing different types or levels of service for network traffic One key characteristic of diffserv is that flows are aggre...

Страница 113: ...between two network devices FTP is a way to login to another network device for the purposes of retrieving and or sending files FTP was invented and in wide use long before the advent of the World Wid...

Страница 114: ...e call processing information generated by system activity M MI Management Interface is used to install and configure the PBXgateway and Remote MIB Management Information Base When SNMP devices send S...

Страница 115: ...a flow in a communications system PSTN Public Switched Telephone Network The traditional wired telephone network Q R Reboot To reinitialize the execution of a program by repeating the initial program...

Страница 116: ...ds and the node number in an IP address begins T TCP IP Transmission Control Protocol Internet Protocol The open computer network communications standard upon which the internet and internet telephony...

Страница 117: ...net WEEE The European Community directive on waste electrical and electronic equipment which together with the RoHS Directive became European Law in February 2003 setting collection recycling and reco...

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