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ViewPoint 8650C
User Guide

10 Troubleshooting

Issue 10 (2013-07-20)

Huawei Proprietary and Confidential

117

Figure 10-1

Troubleshooting process

10.2 Common Troubleshooting Methods

This section describes some of the commonly used methods for determining and identifying
problems.

10.2.1 Analysis of Original Information

Original information refers to the failure information collected from the following sources:



Users' complaints



Failure notifications of other sites and offices

Содержание V100R008

Страница 1: ...ViewPoint 8650C V100R008 User Guide Issue 10 Date 2013 07 20 HUAWEI TECHNOLOGIES CO LTD ...

Страница 2: ...ei and the customer All or part of the products services and features described in this document may not be within the purchase scope or the usage scope Unless otherwise specified in the contract all statements information and recommendations in this document are provided AS IS without warranties guarantees or representations of any kind either express or implied The information in this document i...

Страница 3: ...uipment To return to your original place after visiting a hyperlink press Alt Intended Audience This document is intended for Technical support engineers Maintenance engineers System operators Symbol Conventions The symbols that may be found in this document are defined as follows Symbol Description Alerts you to a high risk hazard that could if not avoided result in serious injury or death Alerts...

Страница 4: ...13 07 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd iii Symbol Description Provides a tip that may help you solve a problem or save time Provides additional information to emphasize or supplement important points in the main text ...

Страница 5: ...4 Static NAT Networking 11 1 4 5 H 460 Networking 12 1 4 6 Networking of the Network Recording Solution 13 1 4 7 Networking of the Huawei IMS HD Videoconferencing Solution 14 1 4 8 MSUC Networking 17 2 Installation Guide 19 2 1 Before Installation 19 2 1 1 Preparing Tools and Meters 19 2 1 2 Checking the Environment 20 2 2 Installing the MCU and Connecting Cables 21 2 2 1 Fixing the MCU 21 2 2 2 C...

Страница 6: ...ing the Parameters Between the 8650C MCU and the SC 43 5 1 7 Setting GK Registration Parameters on a Videoconferencing Endpoint 44 5 2 Setting the Conference Parameters 46 5 2 1 Adding an MCU 46 5 2 2 Adding a Site 48 5 3 Holding a Conference 52 5 3 1 Defining a Conference 53 5 3 2 Scheduling a Conference 59 5 3 3 Ending a Conference 60 6 Holding a Conference on the Web Interface 61 6 1 Preparing ...

Страница 7: ...verview of IVR Audios 102 8 6 2 Recording an IVR Audio Instruction 103 8 6 3 Loading the IVR Files 104 8 7 Managing CDRs 105 8 7 1 Overview of the CDR 105 8 7 2 Viewing CDRs 107 8 8 Setting Network Management Parameters 108 8 9 Using the SIP Trunk 108 8 10 Configuring the IMS interconnection settings 109 9 Maintenance Guide 112 9 1 Upgrading the Host Software on the Web Interface 112 9 2 Maintaini...

Страница 8: ...n Faults 119 10 3 1 The MCU Fails to Register with the External GK 119 10 3 2 A Conference Fails to Start as Scheduled 120 10 3 3 A Participant Cannot Hear Voice Instructions 120 10 3 4 Service Data Cannot Be Backed Up 120 10 3 5 Cascaded Sites Fail to Attend a Conference 121 A Performance and Specifications 122 B Reference Standards and Certifications 124 C Glossary 126 D Abbreviations 131 ...

Страница 9: ...d network and it can be easily deployed in small and medium videoconferencing networks 1 1 Product Features The 8650C is a high density MCU that provides multiple services and is easy to operate and maintain It provides functions such as video processing audio mixing signaling exchange and network interface The MCU supports the following protocols and standards System framework protocols H 323 and...

Страница 10: ... activation IVR and customization of IVR Auto authentication conferences and the monitoring of sites Auto downspeeding Built in ResourceManagement RM Built in FTP Server Built in gatekeeper GK Multicast stream H 281 camera control Supports MSUC networking Supports networking recording Easy Maintenance The MCU has the following maintenance features Complete log and fault diagnostics functions that ...

Страница 11: ...f CP Channels Protocol Adaptation Channels Audio Ports 8650C 12 12 terminals of 2 Mbit s One group of H 264 4CIF 12 subpicture Two channels of 4CIF adaptation 12 8650C 24 24 terminals of 2 Mbit s One group of H 264 4CIF 20 subpicture Two channels of 4CIF adaptation 24 1 2 Product Appearance The 8650C is a 1 U 1 U 44 45 mm box MCU Figure 1 1 shows the appearance of the 8650C Figure 1 1 Appearance o...

Страница 12: ...2 Indicators on the front panel Indicator Color Status Description ALM Red Off The board works normally On There are faults in the MCU RUN Green On There is power input but some error occurs on the board Off There is no power input or some error occurs on the board Slow blinking about 0 5 Hz The board is running normally according to the configuration Fast blinking about 4 Hz The board is loading ...

Страница 13: ...tral wire and ground wire The power cable is used to transmit AC power from the AC power distribution equipment to the MCU All types of power cables are available for the MCU such as the standard AC power cables used in China Europe the Commonwealth of Nations and other countries 1 3 2 Ethernet Cable Introduction There are two types of Ethernet cables straight through cable and crossover cable Str...

Страница 14: ...rk cable Figure 1 5 Structure of network cables 1 RJ 45 network interface connector 2 Tag 1 3 Main tag 4 Tag 2 Table 1 3 lists the wiring relation of a straight through cable Table 1 4 lists the wiring relation of a crossover cable Table 1 3 Wiring relation of a straight through cable Connector X1 Connector X2 Wiring Relation X1 2 X2 1 Twisted pair X1 1 X2 2 X1 6 X2 6 Twisted pair X1 3 X2 3 X1 4 X...

Страница 15: ...ble You can configure the MCU at a terminal by connecting the terminal to the RS 232 serial port on the board with the serial port cable Figure 1 6 shows the serial port cable Figure 1 6 Serial port cable 1 3 4 Optical Fiber Optical fibers are used to connect the boards of the MCU to optical interface boards in other cabinets or to other signal source devices for example SDH All optical fibers can...

Страница 16: ...ibers check the optical fiber connectors Figure 1 7 Different types of optical fiber connectors 1 FC PC connector 2 LC PC connector 3 SC PC connector 4 Tail fiber cap The optical connector on the side of the board is an LC PC connector whereas the optical connector on the other side can be an LC PC or SC PC connector 1 4 Networking and Applications The MCU provides powerful functions and is an ide...

Страница 17: ...versal between public and private networks You can connect the MCU to different networks through different network interfaces In this case video terminals in different networks can join the same conference Figure 1 9 shows the networking diagram in video firewall mode Figure 1 9 Networking diagram in video firewall mode IP Network IP Network ResourceM anager SwitchCentre M CU HD Term inal G roup T...

Страница 18: ...lave MCUs are determined when you define a cascading site The master and the slave MCUs join in a conference on another MCU as a single site Each master MCU can be appended with multiple slave MCUs while each slave MCU can be appended to only one master MCU MCUs are cascaded through IP lines Multi Channel Cascading During a single channel cascaded conference where only one channel is used between ...

Страница 19: ...ng a Cascaded Conference You can manually add sites on different MCUs to create a multi channel cascaded conference Such conference can also be scheduled by the RM automatically in one of the following situations During the defining of an ordinary conference sites are assigned to difference MCUs or a site is not assigned to any MCUs and cannot be assigned to the same MCU as other sites the second ...

Страница 20: ...ing If the GK is on a private network you must enable Q 931 routing H 245 routing and NAT from the GK In addition you must use the private IP address of the GK when registering the MCU to the GK A terminal that is on the same private network as the MCU cannot be registered with the GK Therefore the terminal must use an IP address to attend a conference Multi layer NAT is not supported 1 4 5 H 460 ...

Страница 21: ...f a multipoint conference with the MCU which supports H 460 18 and H 460 19 The MCU connect to the Traversal Server in the external network to achieve the NAT or Firewall traversal 1 4 6 Networking of the Network Recording Solution Use a recording server to record the conference Users can access the recording server anytime anywhere via the web page to watch the live broadcast or on demand broadca...

Страница 22: ...rencing Solution Born by the standard IP protocol the IMS uses the VoIP applications based on the standard SIP applications of the 3rd Generation Partnership Project 3GPP to provide fixed and mobile multimedia services for telecommunications operators The integration of MCUs can enhance the functionality of the Huawei IMS HD videoconferencing solution Figure 1 14 shows the networking of the Huawei...

Страница 23: ...ll Session Control Function MRFC Multimedia Resource Function Controller MRFP Media Resource Function Processor MGCF Media Gateway Control Function MSC Mobile Switching Center GGSN Gateway GPRS Support Node AG Access Gateway DSL Digital Subscriber Line WiFi Wireless Fidelity PLMN Public Land Mobile Network PS Packet Switched service Portal Log in to interface to schedule conference and control sit...

Страница 24: ...elements in the Huawei IMS HD videoconferencing solution Table 1 5 Interfaces between the network elements in the Huawei IMS HD videoconferencing solution No Interface Description 1 Interface between the video terminal and the service call center Based on the SIP protocol the video terminal functions as an IMS terminal registers with the IMS network and initiates or receives audio and video calls ...

Страница 25: ...the MCU is based on the SIP protocol The MRFC connects the calls from users to the MCU through the SIP interface For example the conference joining and exiting of users are both managed through the SIP interface 6 Interface between the MRFC and the MCU The participant control between the MRFC and the MCU is based on the TCP protocol The MRFC delivers conference control commands to the MCU through ...

Страница 26: ...ietary and Confidential Copyright Huawei Technologies Co Ltd 18 Figure 1 16 MSUC networking diagram The MCU and participants register to the OCS Lync server with SIP protocol Using the Outlook and Exchange plug ins the SMC2 0 can schedule a conference and send the notice ...

Страница 27: ...MCU You need to make sure that these tools are available Common tools and dedicated tools are both required in the engineering process List of Universal Tools Tools for marking lines Tap ruler 1 meter marker and scriber Tools for drilling holes in concrete Hydraulic pressure percussion drill percussion Ф6 Ф8 Ф10 Ф12 Ф1 Ф16 v m Tools for fastening bolts and screws Flathead screwdriver M3 M6 Cross s...

Страница 28: ...ts for device maintenance Check whether the ventilation system can maintain the required temperature and humidity in the equipment room Check whether proper the antistatic measures have been taken Check whether sufficient firefighting equipment is available Check whether the anti earthquake design of the equipment room meets the requirements Check whether the lightning protection measures are take...

Страница 29: ...e according to the related requirements 2 2 Installing the MCU and Connecting Cables Before using the MCU place it on a hard flat surface or in a cabinet and then connect cables as required 2 2 1 Fixing the MCU The MCU can be placed horizontally on a stable plane The MCU can also be fixed into a standard cabinet of 19 inches Procedure Step 1 Figure 2 1 Figure 2 1 Fixing the 8650C Step 2 Then fix t...

Страница 30: ...ic diagram for connecting the ground cable Figure 2 2 Schematic diagram for connecting the ground cable End 2 2 3 Connecting the Network Cable To enable 8650C to function correctly connect the GE0 port in the board front panel to a gigabit switch Procedure Step 1 Plug the RJ 45 connector at one end of the network cable to the GE0 port of the 8650C Step 2 Plug the RJ 45 connector at the other end o...

Страница 31: ...orary labels to both ends of the optical fiber cable thus avoiding confusion Step 2 Route the optical fiber cable upward along the cabling trough on the optical interface board Remove the protective cap and clean the optical connector with the fiber cleaning paper Step 3 Align the connector with the guide rail of the optical interface on the board and insert the connector with moderate force until...

Страница 32: ...abels including power switch labels are correctly filled in and consistently attached If possible attach the labels 20 mm 0 79 in away from the cable connectors The power and ground cables are 30 mm 1 18 in away from the signal cable outside the cabinet Verifying Power Supply Ensure that the performance of the external AC power supply meets the requirements 2 3 2 Powering On the MCU Procedure Step...

Страница 33: ...e 3 1 Table 3 1 Default settings Parameter Value IP address of the front panel GE0 port 192 168 2 1 User name of the web interface administrator admin Password of the web interface administrator ViewPoint 8660 V100R008C01B017SP03 or an earlier version admin ViewPoint 8660 V100R008C01B017SP04 or a later version Change_Me Computer Requirements The following lists the minimum requirements for the com...

Страница 34: ...n to the Web Interface Procedure Step 1 Connect the client computer to the GE0 port of 8650C with a crossover cable or connect the client computer and to 8650C to the same switch in the LAN Step 2 In the address bar of the browser enter the IP address of the GE0 network interface of 8650C The default IP address is 192 168 2 1 Press Enter The login page of the Web interface is displayed as shown in...

Страница 35: ...08C01B017SP04 or a later version End Result If the home page is displayed as shown in Figure 3 2 it indicates that you have logged in to the Web interface successfully Figure 3 2 Home page of the Web interface To improve system security change the password at your first login 3 2 2 Common Operations Some operations are the same in different pages On the Web interface the following operations can b...

Страница 36: ...by default SSH is a cybersecurity protocol for remote access in an insecure network environment using the encryption and certification mechanism When you use SSH to log in to the MCU all transmitted data are encrypted To improve security use SSH Prerequisites All MCU boards can be configured using commands Ensure that The MCU s main control board is connected to a network using a network cable The...

Страница 37: ...lt value for Port Step 5 Click Open The login window is displayed Step 6 Enter the user name and password and press Enter The default user name is admin The default password differs due to different software version ViewPoint 8660 V100R008C01B017SP03 or an earlier version admin ViewPoint 8660 V100R008C01B017SP04 or a later version Change_Me The default password for original version is retained aft...

Страница 38: ...10 2013 07 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 30 The following message is displayed Login in Success This indicates that you have successfully logged in to the MCU and can run commands for subsequent operations End ...

Страница 39: ...al network change the IP address of the front panel GE0 port Obtaining Actual IP Settings Before changing IP address of the front panel GE0 port contact your network administrator to obtain the actual IP settings for the items listed in Table 4 1 Table 4 1 IP settings Parameter Default Value Actual Settings IP address 192 168 2 1 Example 200 54 0 120 Subnet mask 255 255 0 0 Example 255 255 0 0 Gat...

Страница 40: ... Interface parameters based on the actual settings recorded in Table 4 1 Retain the default settings for other parameters Step 5 Click OK End 4 2 Setting the System Time To start conferences at the correct time set the 8650C system time to the current time Procedure Step 1 Log in to the 8650C web interface Step 2 Choose Settings System The System page is displayed Step 3 Choose Time The Time page ...

Страница 41: ... and the MCU and controls calls and bandwidth Procedure Step 1 Log in to the 8650C web interface Step 2 Choose Settings H 323 and SIP Gatekeeper Step 3 Set the parameters listed in Table 4 2 Table 4 2 Gatekeeper parameters Parameter Description Setting Register with Gatekeeper Whether the MCU registers with a GK Selected The MCU registers with a GK After the MCU registers with a GK the GK function...

Страница 42: ... address of an online standalone GK RAS port Registration Admission and Status RAS port number for the desired GK Value range 1000 65535 Default value 1719 Enable H 235 encryption H 235 provides authentication data encryption and data integrity which can protect the system against unauthorized access and improves conference security This parameter is deselected by default If confidential informati...

Страница 43: ...Manager the SM for short and the SC The SM is the management console of the SC The SC and the GK described in this chapter refer to the same software SC A simple conference is a conference wherein All the participants access the same MCU in the same mode All the participants are in the same service area so that their service codes are consistent Third party authentication billing and number distri...

Страница 44: ...ipant on the RM and an endpoint on SC respectively The IP terminal IP participant and endpoint are associated by the same terminal number The IP participant should meet the following requirements Terminal number The parameters on the RM terminal number of the IP participant the SC Endpoint number and the terminal terminal number must be consistent with each other Terminal password If the SC adopts...

Страница 45: ...ected to an external RM system or an IMS network SMC2 0 The MCU is to be connected to an SMC2 0 system B in Web The service management functions of the MCU is to be used Select RMCC IMS Network interface It specifies the network interface used for the connection between the MCU and an external RM FE GE0 GE1 ANY Default value ANY Select GE0 recommended Listening port Connection request service port...

Страница 46: ...ck Yes to restart the MCU End 5 1 3 Adding a Prefix The GK functions as a bridge to transfer call information between videoconferencing endpoints and the MCU translates the addresses of the videoconferencing endpoints and the MCU and controls calls and bandwidth The operation of adding a prefix is conducted on the node management that is the SM of the SMC Step 1 Click GK Management in the navigati...

Страница 47: ...tring consisting of characters that can be displayed The maximum length is 50 bytes Example GK1 Host 1 2 Set at least one IP address Set the IP address of the active standby SC according to the real situation The IP address should be consistent with the IP Management in the gkcfg ini configuration file If the dual system backup is not enabled you can set only the active IP Example 200 53 24 11 Ste...

Страница 48: ...one Example 010 Description You can describe the zone information indicated by the prefix Step 3 Set the parameter according the description and simple values in Table 5 5 and click Add Step 4 Click Next and finish adding the prefix according to the prompts Step 5 Click OK End 5 1 4 Adding an Area Code To add an area code perform the following steps Step 1 Choose Settings Area Code from the menu b...

Страница 49: ...de The code of the city or area to be added Example 010 City The name of the city or area to be added Example Beijing Province The province of the city or area to be added Example Beijing Step 3 Set the parameters according to the sample values in Table 5 6 Then click OK End 5 1 5 Adding a Service Area Procedure Step 1 Choose Settings Service Area from the menu bar Step 2 Right click the primary l...

Страница 50: ...of a service area Parameter Description Setting Name The unique ID of the service area Beijing Remarks The description of the service area Step 3 Set the parameters according to the sample values in Table 5 7 to add a service area Beijing and then click OK Step 4 Choose the service area Beijing Step 5 Right click the secondary list in the Service Area dialog box and choose Add from the shortcut me...

Страница 51: ... no more than 20 digits Example 010 Prefix name The name of the prefix a string that must not exceed 40 characters Example 010 Remarks The description of the prefix Step 6 Set the parameters according to the sample values in Table 5 8to add the prefix for the service area and then click OK End 5 1 6 Configuring the Parameters Between the 8650C MCU and the SC If you use the RM the SC and the MCU to...

Страница 52: ... HD videoconferencing endpoint and 8650C embedded GK as an example The HUAWEI ViewPoint 9000 videoconferencing endpoint provides a web interface where you can set GK registration parameters Procedure Step 1 Log in to the endpoint web interface 1 In the browser address box enter the endpoint IP address Press Enter The login page shown in Figure 5 8 is displayed Figure 5 8 Endpoint login page 2 Set ...

Страница 53: ...K server IP address This IP address is used by the endpoint to register with the GK Ensure that the GK is online during registration In this example the endpoint registers with the embedded GK of MCU Therefore set this parameter to the IP address of MCU If the endpoint registers with an SC server set this parameter to the IP address of the SC server Example 200 54 0 144 E 164 Participant number fo...

Страница 54: ...ered with a GK succeeded Step 5 Repeat Step 1 through Step 4 to set GK parameters for another endpoint End 5 2 Setting the Conference Parameters 5 2 1 Adding an MCU Procedure Step 1 Click MCU Management in the navigation bar Step 2 Right click the primary list and choose Add from the shortcut menu to display the Add MCU dialog box Step 3 Choose the MCU type ViewPoint 8650C and click Next to displa...

Страница 55: ...to 1 You can scan the IP address of the MCU by clicking IP Scan Parameters as shown in Figure 5 10 are described in Table 5 10 Table 5 10 Parameters of the MCU Parameter Description Setting Name The name of the MCU Example MCU8650C Type There are two types of MCU active MCU and standby MCU NOTE The default value is active When you choose standby the MCU is defined as the standby MCU Standby MCU Se...

Страница 56: ...RM NOTE The connection password should be consistent with the Password in 5 1 2 Configuring the Parameters Between the 8650C MCU and the RM Example 123456 IP address he IP address of the GE0 network port of the 8650C MCU Example 200 54 1 101 Port The port number that the MCU communicates with the RM NOTE The port number should be consistent with the value of Listening port in 5 1 2 Configuring the...

Страница 57: ... 07 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 49 Figure 5 11 Adding a site Step 3 Set the information of Site1 according to the sample values in Table 5 2 and then click Next to display the IP Parameters dialog box as shown in Figure 5 12 ...

Страница 58: ...meters Table 5 11 lists the descriptions of the parameters in Figure 5 12 Table 5 11 IP parameters Parameter Description Setting Terminal Type Selects the protocol type used by the terminal Two options are available H 323 and SIP Example H 323 Number Type When Number is selected you need to set the terminal number and the terminal password When IP is selected you need Example Number ...

Страница 59: ...nd a string that may contain numbers the star key or the pound key In the example shown in Figure 5 12 010 is the prefix defined on the SC and 0001 is the string This number must be consistent with the terminal number configured on the terminal Example 0100001 Terminal IP Set the IP address of the H 323 terminal Step 4 Set the parameters according to the sample values in Table 5 11 and then click ...

Страница 60: ...ogies Co Ltd 52 Figure 5 13 Capability Step 5 Set the parameters and then click Next to set the information of Site1 according to the sample values in Table 5 2 Step 6 Repeat Step 2 through Step 5 to add Site2 and Site3 End 5 3 Holding a Conference The process of holding a conference involves defining scheduling and ending the conference ...

Страница 61: ... conferences in the primary list Step 2 Right click the primary list and choose Add Normal Conference from the shortcut menu to display the General Parameters dialog box as shown inFigure 5 14 Figure 5 14 General Parameters Table 5 12 describes the parameters of a conference Table 5 12 Basic parameters of a conference Parameter Description Setting Access number A combination of MCU prefix and sub ...

Страница 62: ...ion system you can specify any account Example 8888 Password The password of the conference To control a conference a terminal must specify this password Example 8888 Remarks The description of the conference By configuring the access number you can define the access numbers for the current conference Otherwise the system generates a random access number for the current conference when the confere...

Страница 63: ... the communication between the sites and the MCU when holding a conference The value range is 64 kbit s to 8 Mbit s NOTE When 3G Wireless terminals joining in the conference set the Transmission rate to 64 kbit s Example 768kbit s Video Protocol Vid eo Format The available combinations of the video protocol and video format are as follows H 261 QCIF H 261 CIF H 263 CIF H 263 QCIF H 263 4CIF H 264 ...

Страница 64: ...nt Not selected Support rate adaptation Select it if the sites in the conference need to join the conference at different rates NOTE If the transmission rate of a site in the conference is lower than the transmission rate of the conference and the rate adaptation resources of the conference are not available the conference cannot be scheduled Not selected MultiChan Extra Adapt Nums Sets the number...

Страница 65: ...CU compares the volume sent by the attended sites If the volume of a site or many sites is higher than the threshold the MCU broadcasts the site with the highest volume Otherwise the MCU does not conduct the voice activation operation Not selected Support TVWall Specifies whether the television wall is supported Not selected Support auto speed down During a conference if packet loss occurs at an I...

Страница 66: ... is adjusted to the same value of the predefined conference parameter If the value of a site parameter is lower than that of the predefined conference parameter when the conference is being scheduled the value of the site parameter remains unchanged To add more participants hold Ctrl and select the participants in turn Step 6 Select an MCU from the Main MCU drop down list box and set parameters fo...

Страница 67: ...splay the Schedule Conference dialog box as shown in Figure 5 17 Figure 5 17 Scheduling a Conference Table 5 14 describes the parameters for scheduling a conference Table 5 14 Parameters for scheduling a conference Paramete r Description Setting User ID Passwo rd The account number and password of the holder NOTE This function is preserved for later use If the system is not connected to the authen...

Страница 68: ...e the conference as a periodic or permanent conference Not selected Step 3 Use the default values for all the parameters in Table 5 14 Then click Schedule End Result If the operation succeeds the conference will begin at once 5 3 3 Ending a Conference Context The RM will terminate the conference once it reaches the scheduled end time If it does not reach the end time you can also terminate the con...

Страница 69: ... you can hold a simple conference 6 1 Preparing for a Conference The 8650C web interface supports conference management functions You can initiate a conference by simply connecting endpoints to the 8650C Planning Data This section describes how to plan data to initiate a conference attended by two participants on the 8650C web interface Table 6 1 lists the conference data plan Table 6 1 Conference...

Страница 70: ...tions as a bridge to transfer call information between videoconferencing endpoints and the MCU translates the addresses of the videoconferencing endpoints and the MCU and controls calls and bandwidth The 8650C supports Built In GK you can set the Built In GK enabled and registers 8650C with it Step 1 Enable Built In GK 1 Log in to the MCU web interface 2 Choose Gatekeeper Settings 3 Select Enable ...

Страница 71: ...he MCU does not register with a GK When scheduling a conference the MCU can call participants only using their IP addresses GK address IP address of the GK If the embedded GK is enabled you do not need to set this parameter If the embedded GK is disabled enter the IP address of an online standalone GK GK ID ID of the GK on the MCU web interface Example GK1 MCU alias Alias used by the MCU to regist...

Страница 72: ...erence If no conference profile has been created you can create a conference Then you can choose to initiate the conference immediately or save the conference as a conference profile 6 2 1 Setting GK Registration Parameters on a Videoconferencing Endpoint To initiate a conference all participant endpoints must register with a GK For details see 5 1 7 Setting GK Registration Parameters on a Videoco...

Страница 73: ...stered with a GK For details see 5 1 7 Setting GK Registration Parameters on a Videoconferencing Endpoint Procedure Step 1 Log in to the 8650C web interface Step 2 Choose Phone Book Participants The Participants page is displayed Step 3 Click Add IP Participant The Add IP Participant dialog box is displayed as shown in Figure 6 3 Figure 6 3 Add IP Participant dialog box Step 4 Set the participant ...

Страница 74: ...site in a cascaded network NOTE It is unavailable for conferences on the built in web interface Example Terminal Protocol type Protocol used by a participant endpoint Available values are H 323 and SIP Select H 323 Participant Number Participant number for the endpoint After the endpoint registers with a GK this number can be used to call the endpoint NOTE If a GK is enabled for a conference enter...

Страница 75: ...arameters are available to be set Default value High Step 5 Click OK Figure 6 4 indicates the participant has been added and registers with the embedded GK successfully Figure 6 4 Add Participant Succeed Step 6 Repeat Step 3 through Step 5 to add another participant endpoint End 6 3 Scheduling a Conference Prerequisites Before scheduling a conference ensure that All participant endpoints have regi...

Страница 76: ...able 6 5 Table 6 5 General conference parameters Parameter Description Setting Conference Name Name of the conference you want to schedule Enter a string of 1 to 64 characters Example Conference 1 Default Duration Duration of the conference Value range 10 360 Unit minute Default value 120 Quality It specifies the audio visual parameters and transmission rate of the conference The higher the level ...

Страница 77: ...Number used by participants to join a conference If you set Conference Type to Common the MCU will assign an Access Number to the conference automatically when scheduling the conference Preset Banner Captio n When enabling the Banner or Caption it functions as an explanation for a conference For details of other general conference parameters click Step 4 Click Next The Select Participants dialog b...

Страница 78: ...Book Step 6 Select participants from the participant list and click Add Step 7 Click Close Step 8 Click Save and schedule a conference The Schedule dialog box is displayed as shown in Figure 6 8 Figure 6 8 Schedule dialog box Step 9 Set Start date and Start time Step 10 Click Schedule The The conference has been scheduled message is displayed in the lower right corner of the page End ...

Страница 79: ...cipant This is used to call a selected participant to enable the participant to join the conference Hanging up participant This is used to disconnect a selected participant Unmute Speaker This is used to unmute the speaker of a selected participant so that the participant can hear the other participants of the conference Mute Speaker This is used to mute the speaker of a selected participant so th...

Страница 80: ...icipant is broadcast In this case the microphones of all the participants except the chair participant and the broadcasting participant are muted Voice Activation This is used to adjust the sensitivity of voice activation If the voice activation function is enabled during a conference the MCU automatically switches the broadcasting participant to the participant with the loudest voice Cancel Chair...

Страница 81: ... In this case the participant needs to call the MCU to join the conference Single dial out This is used to set the call mode of a participant to Single dial out In this case the MCU needs to call the participant to add the participant to the conference Start Multicast This is used to enable the multicast function The multicast parameters are set in the corresponding conference profile End Multicas...

Страница 82: ...lding a Conference on the SMC2 0 About This Chapter You can log in to the SMC2 0 by entering the IP address of SMC2 0 in the web browser and then initiate a conference 7 1 SMC2 0 Running Page After logging in to the SMC2 0 the running page is displayed as shown in Figure 7 1 This document uses the HUAWEI SMC2 0 V100R002 as an example Figure 7 1 SMC2 0 Running Page ...

Страница 83: ...o set GK parameters using the SMC2 0 embedded GK as an example Context The SMC2 0 has one embedded GK which comes online when being installed successfully On the GK page when Status for Embedded GK is the GK is online Before you use the SMC2 0 add a prefix for the embedded GK This prefix is used for participant number allocation Procedure Step 1 Log in to the SMC2 0 web interface Step 2 Add a pref...

Страница 84: ...and click Add The new prefix is displayed in the dialog box 4 Click Save End 7 2 2 Setting Connection Parameters on the MCU Before you use the SMC2 0 to initiate a conference set the connection type Configuring the connection type Step 1 Log in to the web interface of the MCU Step 2 Choose Settings Settings to display the Settings page Step 3 Click the RM Connection tab to display the RM Connectio...

Страница 85: ... future configuration Step 6 Click OK and restart the MCU to enable the settings to take effect End Configuring the GK Step 1 Log in to the web interface of the MCU Step 2 Choose Settings H 323 and SIP to display the H 323 and SIP page shown in Figure 7 4 Figure 7 4 H 323 and SIP settings Step 3 Select Register with Gatekeeper Step 4 In GK address enter the GK IP address If you are using the SMC2 ...

Страница 86: ...e use Step 7 Click OK End Configuring the SNMP Step 1 Log in to the web interface of the MCU Step 2 Choose Settings H 323 and SIP to display the H 323 and SIP page shown in Figure 7 4 Step 3 Choose Settings Settings SNMP to display the SNMP page shown in Figure 7 5 Figure 7 5 SNMP Step 4 In Host address 1 through Host address 5 enter the SMC2 0 severs IP addresses respectively Retain the default v...

Страница 87: ...g the Conference Parameters 7 3 1 Adding an MCU to the SMC2 0 Procedure Step 1 Log in to the SMC2 0 web interface Step 2 Choose Devices MCU Step 3 Click Add MCU The MCU search page is displayed as shown in Figure 7 6 Figure 7 6 Search page Step 4 Enter the MCU IP address in Device Address and click Next The MCU s configuration information is displayed as shown in Figure 7 7 ...

Страница 88: ...on the MCU For details see the HUAWEI SMC2 0 V100R002 Configuration Guide You can contact Huawei technical support engineers or visit http enterprise huawei com support to obtain this document Step 5 Under general settings Set Name and Prefix Under H 323 settings specify H323 ID and GK address Step 6 Click Add End Result If the MCU successfully interconnects with the SMC2 0 the following icons are...

Страница 89: ...onized to the participant This enables the administrator to manage the participant on the SMC2 0 Configuring the SNMP This document uses the HUAWEI ViewPoint 9000 HD videoconferencing endpoint as an example Step 1 Log in to the endpoint web interface For details see 5 1 7 Setting GK Registration Parameters on a Videoconferencing Endpoint Step 2 Choose System Settings Network SNMP Settings The SNMP...

Страница 90: ...MC2 0 web interface Step 2 Choose Devices Participant The Participant page is displayed Step 3 Click Add Participant The participant search page is displayed as shown in Figure 7 9 Figure 7 9 Participant search page Step 4 Enter the participant IP address in Device Address and click Next The participant s configuration information is displayed as shown in Figure 7 10 Figure 7 10 Participant config...

Страница 91: ...awei technical support engineers or visit http enterprise huawei com support to obtain this document To search for a participant in non SNMP mode enter User name and Password on the participant search page Step 5 Under general settings enter the participant name in Name Under H 323 settings specify H323 ID and E 164 alias Step 6 Click Add On the Participant page the new participant is online as sh...

Страница 92: ...Click Close Step 7 From Participant Advanced Settings select the added MCU as Active MCU Step 8 Click Save as Template End 7 3 4 Creating an Ad Hoc Conference You can create an Ad hoc conference from the SMC2 0 A participant can then call the conference ID and enter the activation password to activate the conference Procedure Step 1 Log in to the SMC2 0 web interface Step 2 Choose Conference Confe...

Страница 93: ...cipant page is displayed Step 8 Select participants and click Add Step 9 Click Close Step 10 Select the added MCU as Active MCU Step 11 Click Save as Template End 7 4 Holding a Conference 7 4 1 Scheduling a Conference on the SMC2 0 Prerequisites Before you start a conference ensure that The SMC2 0 embedded GK is online At least one MCU is available on the SMC2 0 Two participants and MCU are regist...

Страница 94: ...nt Specify the participant to be viewed by a selected participant In discussion mode a conference participant can view any of the other participants Adjust volume Adjust the volume of a selected participant heard by the other participants in a conference Unmute microphone Unmute the microphone of a selected participant so the other participants in the conference can hear the selected participant M...

Страница 95: ...acket loss rate ASL audio transmission packet loss rate XRL presentation reception packet loss rate XSL presentation transmission packet loss rate CRC cyclic redundancy check NDV network delay NRJ network reception jitter NSJ network transmission jitter View network statistics for the current conference Display the packet loss rates of a selected participant during the current conference These rat...

Страница 96: ...sites Ensure that On the computer where the FTP server is deployed a fixed TCP IP protocol is added to the network properties and the IP addresses of the computer and MCU are in the same network segment A folder D Upgrade mcu is created on the computer containing the latest mcu soft bin file IVR files and license file The FTPS client is saved to the computer Configuring the FTPS Client Configure t...

Страница 97: ...lues and click OK Step 4 Choose Edit Settings The dialog box shown in Figure 8 2 is displayed Figure 8 2 FileZilla Server Options Step 5 Click SSL TLS settings in the left pane and select Enable FTP over SSL TLS support FTPS If there is a certificate file and a private key file click Browse to import them If there is no certificate file or private key file proceed to Step 6 Step 6 Click Generate n...

Страница 98: ... 7 In 2 Digit country code enter the 2 digit country code Click Browse to set the path for storing the certificate and click Generate certificate The FileZilla Server Options dialog box is displayed and the certificate file and private key file have been imported Step 8 Click OK The main page is displayed Step 9 Choose Edit Users The Users dialog box is displayed as shown in Figure 8 4 ...

Страница 99: ...s Step 10 Click Add to create a user name for example MCU select Enable account and Password and set the password to mcu Step 11 In the Users dialog box choose Shared folders Add specify the save path for the upgrade software and select Read Write Delete and List as shown in Figure 8 5 Figure 8 5 Specifying the save path for the upgrade software Step 12 Click OK ...

Страница 100: ...ecording Service By deploying a network recording server NRS and setting network recording parameters you can log in to the web interface of the network recording server to view live or on demand conferences Introduction With the MCU s network recording feature you can use an NRS to record meetings training sessions classes and judicial proceedings You can view the recording anytime at any place w...

Страница 101: ...eb interface and view the on demand conference Restrictions In this document the REACH CR101 NRS is used When using network recording note the following restrictions The traversal across public and private networks between the MCU and the NRS is not supported The MCU web interface does not support recording operations and control The MCU does not support the recording of 1080i50 60 or 1080p50 60 c...

Страница 102: ... Set the NRS parameters The default value of Connection Password is admin The Connection Password should be consistent with the SMC Password of NRS Step 5 Click Finish End 8 2 3 Recording a Conference on RM Procedure Step 1 Click Predefined Conference in the navigation tree Step 2 Add or edit a conference select Support NRS in the Technical Parameters as shown in Figure 8 8 ...

Страница 103: ...vice Configuration Issue 10 2013 07 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 95 Figure 8 8 Technical Parameters Step 3 Set the recording parameters in the Recording Parameters as shown in Figure 8 9 ...

Страница 104: ...omatically record and live broadcast is selected set the Preset video source and the conference will be recorded automatically when it is begin If the Automatically record and live broadcast is not selected Right click the primary list in the Conference in progress window and choose NRS Control as shown in Figure 8 10 To start recording the conference click Start record To start live broadcast cli...

Страница 105: ...k and one on a public network The GE0 ports of all boards must be in the same network segment while the GE1 ports of all boards must be in another network segment The MCU supports IP route configuration so that data can be sent and received using only the GE1 port Participants connected through the GE1 ports do not support service switchovers Prerequisites Ensure that The GE1 port is connected to ...

Страница 106: ...oints on different networks can attend the same conference 4 Click OK Step 3 Assign IP addresses that are in a different network segment from GE0 port IP addresses to the GE1 ports of the main control board 1 Click the Network Interface tab 2 Set the GE1 port parameters for the main control board 3 Click OK End 8 4 Configuring Static NAT Enable static NAT from the MCU If a GK is deployed on a priv...

Страница 107: ...ss to be mapped to in the NAT IP text box 5 If the GK and the MCU are on the same private network click Protocol Settings to display the Protocol Settings tab page as shown in Figure 8 12 Figure 8 12 Protocol Settings tab 6 Set Q 931 Route Mode to GK Routed on Condition and select Enable H 245 Routing 7 Click OK Step 2 Configure the MCU 1 Login to the web interface 2 Choose Settings H 323 and SIP ...

Страница 108: ...etwork segment set GK address to the private IP address of the GK If not set GK address to the public IP address of the GK 4 Click OK 5 Choose Settings Network to display the Network Figure 8 14 Figure 8 14 Network 6 Select Enable NAT and set NAT address to the public IP address that is mapped to 7 Click OK When adding a site from the RM you must define the site as an IP site if the terminal used ...

Страница 109: ...60 is a series of extensions to the H 323 videoconferencing standard from the ITU Introduced in 2005 several of the extensions including H 460 17 H 460 18 and H 460 19 deal with firewall and NAT traversal Procedure Step 1 Login to the web interface Step 2 Choose Settings H 323 and SIPto display the H 323 and SIP page Step 3 Click the H 460 to display the H 460 page shown as Figure 8 15 Figure 8 15...

Страница 110: ...vides the information about the default IVR audio instructions Table 8 2 Information about the default IVR audio instructions WAV File Content 0 wav 0 1 wav 1 2 wav 2 3 wav 3 4 wav 4 5 wav 5 6 wav 6 7 wav 7 8 wav 8 9 wav 9 10 wav 10 11 wav 11 12 wav 12 13 wav 13 14 wav 14 15 wav 15 16 wav 16 17 wav 17 18 wav 18 19 wav 19 20 wav 20 30 wav 30 40 wav 40 50 wav 50 60 wav 60 70 wav 70 80 wav 80 ...

Страница 111: ...ter the password again thanks wav Thank you for using the system welcome wav Welcome to use the meeting system welcome_single wav Welcome to use the meeting system jion wav The welcome music played for joining the conference system left wav The music played for exiting the conference speakoff wav The speaker is muted micoff wav The microphone is muted micon wav The alert tone played when you unmut...

Страница 112: ...t Now to display the Sound Selection dialog box as shown in Figure 8 17 Figure 8 17 Sound Selection dialog box Step 3 Set the format to PCM and attributes to 16 000 kHz 16 Bit Mono 15kb sec and then click Save As to save the settings Step 4 Click OK respectively to exit the Sound Selection and Properties for Sound dialog boxes Step 5 Record and save the audio file in the Sound Sound Recorder dialo...

Страница 113: ...es the information about the conferences in Call Detail Record CDR format 8 7 1 Overview of the CDR The MCU records the original CDRs and saves the CDRs in CDR format The CDRs can be exported to a third party billing system for billing or used as backups The MCU saves or deletes the CDRs automatically every morning at 00 00 00 The policy for saving or deleting the CDRs is as follows If a CDR was r...

Страница 114: ...tation resources of a conference Format CA Conference ID Conference name Time GMT offset Adaptation resources Example CA 10000 Conference name 2008 11 24 12 00 00 480 2 CP This indicates the continuous presence resources of a conference Format CP Conference ID Conference name Time GMT offset Continuous presence resources Example CP 10000 Conference name 2008 11 24 12 00 00 480 16 SA This indicates...

Страница 115: ...endpoint that places the call Number of the endpoint that is called IP address of the endpoint that is called Port Type of the endpoint that is called Conference rate Example 2009 07 10 17 53 13 480 2009 07 10 17 53 15 480 07552006 10 11 240 112 1720 0 07552009 10 11 240 114 1720 0 1024 kbit s Endpoint type can be one of the following two values 0 This indicates that the endpoint is a terminal 1 T...

Страница 116: ...nagement side must be consistent with those on the MCU side Otherwise the two parties cannot communicate with each other properly Procedure Step 1 Choose Settings Settings to display the Settings page Step 2 Click SNMP to display the SNMP page as shown in Figure 8 21 Figure 8 21 SNMP Step 3 Set the SNMP and Trap parameters Step 4 Click OK End 8 9 Using the SIP Trunk Context The MCU supports the SI...

Страница 117: ... SIP TRUNK Selected SIP TRUNK After the SIP Trunk parameters are set when the participant calls a SIP site by dialing the site number the device to which the SIP Trunk IP address points is used to make the call Choose and set the Prefix or Suffix and then set the IP address Step 4 Click OK End 8 10 Configuring the IMS interconnection settings Context When deploying an MCU on the Huawei IMS core ne...

Страница 118: ...tep 4 Set Connection mode to RMCC IMS Set Listening port to the listening port of the service system on the IMS network and set Password to the authentication password of the service system on the IMS network Step 5 Click OK Step 6 Choose Settings H 323 and SIP to display the H 323 and SIP page Step 7 Click SIP to display the SIP page as shown in Figure 8 23 Figure 8 23 SIP ...

Страница 119: ...the MRFC Re register interval to 5 Refresh interval to 10 Registration type to Standard User name to the alias of the MCU and Password to the authentication password of the MCU The setting of User name must be the same as that configured on the IMS network Step 9 Select Register with SIP Server Set IP address to the IP address of the MRFC and Port to the SIP port of the MRFC Deselect Enable Proxy ...

Страница 120: ...rnal commands You can also log in to the Web interface and maintain the MCU from the maintenance page 9 1 Upgrading the Host Software on the Web Interface Context Note the following It is recommended that you perform the upgrade after all conferences end Otherwise the ongoing conferences may get affected After the upgrade you need to restart the MCU for a new version of software to take effect Pro...

Страница 121: ...ted End 9 2 Maintaining the Dust Proof Net Clean the dust proof net periodically to keep the system dissipation and ventilation in good condition and to cover the possibility of blocking the dust proof net You are suggested to clean the net at least once every three month Procedure Step 1 Removing the Dust Proof Net 1 Loosen the four screws on the dust proof net frame anticlockwise 2 Pull out the ...

Страница 122: ...y the invisible infrared during the operation process If you are not wearing protective glasses you should not look directly into the laser transmitting port on the optical interface board and the optical fiber connector If the optical connector of the board or the tail fiber is not used ensure that it is covered by the protective cap If the optical connector is in use when removing the tail fiber...

Страница 123: ...e engineers from the Global Technical Service Department of Huawei to prevent damage to the interface board caused by improper operations Step 2 Clean the interface and the connector using special tools and materials To clean the optical interface of the laser device on the optical interface board and the optical connector you should use tools and materials from optical fiber or optical cable manu...

Страница 124: ...curs during the use of the MCU fix the fault according to the process described in this chapter If you have trouble in fixing the fault contact technical support engineers from Huawei 10 1 Troubleshooting Process When the system runs properly you can observe the board indicator to check whether there is a fault When a fault occurs see the procedure as shown in Figure 10 1 to handle the problem ...

Страница 125: ... Troubleshooting process 10 2 Common Troubleshooting Methods This section describes some of the commonly used methods for determining and identifying problems 10 2 1 Analysis of Original Information Original information refers to the failure information collected from the following sources Users complaints Failure notifications of other sites and offices ...

Страница 126: ... fault The analysis of the indicator status is mainly for quickly locating the position and the cause of the fault This can provide clues for fault processing The information gathered by this activity is however inadequate therefore you need to use the analysis of warning information along with this activity 10 2 4 Test Loopback Test refers to the measurement of the related technical parameters of...

Страница 127: ...rd to re occur in a short period which covers the real cause of the faults and brings potential risks to the security and stability of the equipment Therefore these two activities are the measures that are adopted in case of temporary emergencies and should be used with caution 10 2 7 Apparatus Meter Aided Analysis Apparatus or meters are commonly used to analyze and identify faults Apparatus Mete...

Страница 128: ...ange the system time of the MCU 10 3 3 A Participant Cannot Hear Voice Instructions Symptom After a participant joins a conference properly the participant cannot hear the voice instructions provided by the IVR service Analysis The voice instructions of the IVR service provided by the MCU can be customized If the relevant voice file is incorrect participants cannot hear the voice instructions prop...

Страница 129: ...s of the cascaded sites at different levels on the network are inconsistent The cascading types set for the cascaded sites at different levels on the network are inconsistent The conference number dialed by certain cascaded sites are incorrect The number of channels set for the cascaded sites at different levels on the network are inconsistent H 264 4CIF 720p or 1080p continuous presence is define...

Страница 130: ...3 CIF H 263 4CIF H 264 CIF H 264 4CIF H 264 720p30F H 264 720p60F H 264 1080p30F Network ports GE0 GE1 10 100 1000Base T RJ 45 Physical specifications Width Depth Height 436 mm 540 mm 43 5 mm Weight 15kg Power supply Input voltage 90 V AC 260 V AC Frequency 50 60 Hz Power 250 W Operating environment Ambient temperature for operation Ambient temperature for long time operation 0 to 45 Ambient tempe...

Страница 131: ...e 10 2013 07 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 123 Item Sub Item Specifications Reliability MTBF 80000 h Certifications RoHS WEEE CE and CCC certifications and the admission certification of Ministry of Information Industry ...

Страница 132: ...l protocols H 281 A far end camera control protocol for videoconferences using H 224 H 282 Remote Device Control Protocol for Multimedia Applications Series H Audiovisual and Multimedia Systems Infrastructure of Audiovisual Services H 283 Remote Device Control Logical Channel Transport Series H Audiovisual and Multimedia Systems Infrastructure of Audiovisual Services Audiovisual service frame stru...

Страница 133: ...racteristics of Primary PCM Multiplex Equipment Operating at 2048 kbit s General Aspects of Digital Transmission Systems Terminal Equipments G733 Characteristics of Primary PCM Multiplex Equipment Operating at 1544 kbit s General Aspects of Digital Transmission Systems Terminal Equipments G 735 Characteristics of primary PCM multiplex equipment operating at 2048kbit s and offering synchronous digi...

Страница 134: ... HD or full high definition although 1080i is also referred to as Full HD 1920x1080 pixels The term usually implies a widescreen aspect ratio of 16 9 that is a horizontal resolution of 1920 pixels This creates a frame resolution of 1920 1080 or 2 073 600 pixels in total The frame rate in hertz can be either implied by the context or specified after the letter p or i such as 1080p30 which means 30 ...

Страница 135: ...autoattendant or sometimes AA allows callers to be automatically transferred to an extension without the intervention of an operator typically a receptionist Many AAs will also offer a simple menu system for sales press 1 for service press 2 etc An auto attendant may also allow a caller to reach a live operator by dialing a particular number for example 0 Automatic Repeat reQuest Automatic Repeat ...

Страница 136: ...eactions body language of all participants and not just of the speaker gatekeeper The gatekeeper is an H 323 entity on the LAN that provides address translation and control access to the LAN for H 323 terminals and gateways The gatekeeper can provide other services to the H 323 terminals and gateways such as bandwidth management and locating gateways intelligently forward If an MCU detects the pac...

Страница 137: ... signal may travel on different routes to reach the destination At the receiver a packet can arrive very late be corrupted or do not arrive In certain cases if a packet does not arrive it indicates that the packet is rejected by a server which has reached full buffer and cannot accept any more data In a VoIP connection error control techniques such as ARQ are not feasible and the receiver must be ...

Страница 138: ...ietary and Confidential Copyright Huawei Technologies Co Ltd 130 voice activation This function is used for discussion or argument scenarios The participant with the loudest voice is broadcast voice activation threshold It is the threshold for triggering voice activation ...

Страница 139: ...arm ARQ Automatic Repeat reQuest C CAS Channel Associated Signaling CCS Common Channel Signaling CDR Call Detail Record CIF Common Intermediate Format CPU Central Processing Unit CRC Cyclic Redundancy Check D DSP Digital Signal Process DVI Digital Visual Interface E EMC Electromagnetic Compatibility ETS European Telecommunications Standards F FE Fast Ethernet FECC Far End Camera Control ...

Страница 140: ...ekeeper GPUA B General Process Unit A B H HDPA B C D High Density Processor A B C D I IEC International Electrotechnical Commission IP Internet Protocol ITU International Telecommunications Union IVR Interactive Voice Response L LAN Local Area Network M MCU Multipoint Control Unit N NAT Net Address Translation NTSC National Television Standards Committee P PAL Phase Alternating Line PGND Protectio...

Страница 141: ...nt 8650C User Guide D Abbreviations Issue 10 2013 07 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 133 Q QoS Quality of Service T ToS Type of Service U UDP User Datagram Protocol ...

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