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eSpace IAD
Troubleshooting

3 Co mmon Troubleshooting Methods

Issue 02 (2012-02-29)

Huawei Proprietary and Confidential

Figure 3-14

Running Filter Function

Voice services, call control, and remote (Telnet) maintenance involve packets of different
types. You can set the filter criteria based on the following description.



For SIP services, the structure of the protocol stack is shown in

Table 3-3

. You need to

pay attention to the RTP and SIP protocols.

Table 3-3

Structure of SIP Signaling Protocol Stack

Remote
Maintenance
Through Telnet

Voice

Call Control

Telnet

RTP

RTCP

SIP

TCP

UDP

MAC



For MGCP services, the structure of the protocol stack is shown in

Table 3-4

. You need

to pay attention to the RTP and MGCP protocols.

Table 3-4

Structure of MGCP Signaling Protocol Stack

Remote

Maintenance
Through Telnet

Voice

Call Control

Telnet

RTP

RTCP

MGCP

TCP

UDP

MAC

Step 5

Choose

File

File Save as

to save the packet file in a specified folder.

----End

Summary of Contents for eSpace IAD

Page 1: ...eSpace IAD V300R001C07 Troubleshooting Issue 02 Date 2012 02 29 HUAWEI TECHNOLOGIES CO LTD ...

Page 2: ...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 is subje...

Page 3: ...ed Province 12 2 1 6A User Cannot Hear Other s V oice on the Phone Connected to IADAfter 5 to 10 Minutes 14 2 1 7 POTS Phone Users Cannot Hear the Two Stage Dialing Tone 15 2 1 8 000 Is Displayed to UAP3300Agents for Incoming Calls 15 2 1 9 When the IAD Is Connected to the IMS the Calling Number Cannot Be Correctly Displayed on Phones that are Connected to the IAD 16 2 1 10 Incorrect SessionTimer ...

Page 4: ...Machines Connected to the Counter Work Improperly 33 2 2 4 FAX Machines Connected to the IAD Cannot Send or Receive Faxes 34 2 2 5 How to transfer remote faxes 37 2 2 6 ModemDialing Failure 37 2 3 Other Faults 38 2 3 1 Bad AT0 Grounding 38 2 3 2 Port Indicator Is Off 39 2 3 3 Network Connection Failure 40 2 3 4 Loading or Backing Up File Failure 41 2 3 5 PPPoE Dialing Failure 42 2 3 6 PCs Connecte...

Page 5: ...ely 85 3 10 Bad AT0 Grounding 89 3 11AT0 Ground Impedance Test 94 4 FAQs 99 4 1 Query Related FAQs 99 4 1 1 What Are the Default IP address User Name and Password Used to Log In to the IAD 99 4 1 2 How Do I View the IPAddress of the IAD 99 4 1 3 How Do I View the MAC Address of the IAD 100 4 1 4 How do I view the physical sequence number of the IAD 100 4 1 5 How do I view the software version of t...

Page 6: ...29 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 1 About This Document This topic describes the flows the methods for troubleshooting typical faults of the eSpace Integrated Access Device IAD and how to analyze and rectify faults ...

Page 7: ...fer to those that occur suddenly and affect a wide range of services or devices Emergency faults such as host breakdown and service congestion seriously affect network operations and the quality of service QoS The following faults are emergency faults IAD voice and fax services are unavailable The IAD restarts continuously Ordinary faults refer to those that are not emergency faults The methods fo...

Page 8: ...tatic wrist straps Record details about all the faults that occur during maintenance Record all the important operations for example restarting a process and restoring factory settings An important operation must be performed by qualified operators after the related data is backed up and proper measures are provided against security and emergency events 1 3 Troubleshooting Process This topic descr...

Page 9: ...idential Copyright Huawei Technologies Co Ltd 4 Figure 1 1 Troubleshooting flowchart 1 3 1 Collecting Fault Information Detailed fault description helps to quickly locate faults The scenario information networking information and system information must be collected when a fault occurs ...

Page 10: ...cal connections between devices Device interconnection information such as the VLAN IP address subnet gateway or port of a device System Information When a fault occurs you can log in to the IAD web management system to obtain system information described in Table 1 2 The procedure is as follows 1 Log in to the web management system For details see the eSpace IAD Product Documentation 2 Choose Dia...

Page 11: ...locating methods provided by devices and rectifying the faults using various methods such as maintaining cables replacing components and modifying configuration data The procedure for locating a fault is as follows 1 Verify that the fault is a peripheral fault 2 Verify that the fault is an IAD hardware fault 3 Verify that the fault is a network fault 4 Verify that the fault is a service fault For ...

Page 12: ... Ltd 7 Email support huawei com 1 3 6 Compiling a Troubleshooting Report After verifying that a fault is rectified record the fault rectification process andcompile a troubleshooting report for future reference The troubleshooting report should include fault symptom fault location fault rectification and preventive suggestions ...

Page 13: ...er the IAD makes a call to an onsite mobile phone user the mobile phone user cannot hear the calling party s voice for several seconds This fault occurs when the traffic is high Network IAD user IAD SBC UMG Cause The defense against UDP Flood attacks is enabled for the SBC Solution Step 1 Capture packets on the IAD between the IAD and the SBC and between the SBC and the UMG Step 2 Analyze the capt...

Page 14: ...eway device Incorrect configuration for the Ethernet port on the IAD upper level switch Solution Step 1 Change a phone and checkwhether the fault is rectified If yes the procedure ends If no go to Step 2 Step 2 Ping the peer gateway device on the IAD to verify the network performance If the delay time is less than 40 ms and no packet loss occurs the bearer network performance is good Step 3 Verify...

Page 15: ... and other digitmaps are not configured you cannot initiate any calls For details about how to configure digitmaps see the product document Step 4 View the user registration status For MGCP services run the display mgcp attribute command to view the user registration status For SIP services run the display sip attribute all command to view the user registration status Step 5 If the user is not reg...

Page 16: ...command to query theworking status of the port For example to query the user of port 0 on the IAD132E T the operations are as follows TERMINAL display pstnport state 0 If the port number is not specified all ports are queried Port PortType State 0 FXS IDLE FXS is the port for SIP users FXO is the port for PSTN users State IDLE indicates that the port is in idle state If the state is BUSY it indica...

Page 17: ... error code to the softswitch The IAD does not support softswitch messages that contain FXR T38 events Common MDCX messages do not contain FXR T38 events If yes change the T38 mode to transparent transmission mode for the softswitch If no go to Step 3 Step 3 Contact Huawei technical support End 2 1 5 Phones Connected to IAD Cannot Make Calls to Fixed Line Phones in a Specified Province Symptom Pho...

Page 18: ...he IAD in the 200 OK message Check whether the digitmap delivered by the softswitch is correct as shown in Figure 2 1 If no modify the digitmap configuration on the softswitch If yes go to Step 6 Figure 2 1 Digitmap delivered by thesoftswitch using SIP Step 5 For MGCP mode only Capture packets to view the digitmap of the softswitch in the MGCP mode The softswitch sends the digitmap to the IAD in t...

Page 19: ...Symptom When a user uses a phone connected to IAD to talk with others the user cannot hear others voice after 5 to 10 minutes Other users can hear the user s voice Cause Phone fault Peer device fault Solution The IAD configuration is correct when only one user encounters theproblem Step 1 Change a phone and checkwhether the fault is rectified If yes the procedure ends If no go to Step 2 Step 2 Che...

Page 20: ...uration on the IAD Assume that the prefix is 99 on the SoftCo the 99 digitmap must be added on the IAD Ensure that the minimum length of outgoing numbers corresponding to the prefix on the SoftCo is 0 If yes go to Step 3 Step 3 Check whether the IAD version is V300R001C03SPC800 or later Only V300R001C03SPC800 and later versions support the two stage dialing function If no upgrade the IAD version t...

Page 21: ...ain is reduced to 5 the calling number is displayed to the UAP3300 agent when a phone or mobile phone user dials the access code however when the gain is reduced to 7 the IVR two stage dialing function is unavailable Step 3 Check whether the fault is rectified If yes the procedure ends If no go to Step 4 Step 4 Contact Huawei technical support End 2 1 9 When the IAD Is Connected to the IMS the Cal...

Page 22: ...run the sip soft parameter sessionTimer on command If yes go to Step 2 Step 2 Contact Huawei technical support End 2 1 11 When a CHINO E Phone Is Connected to the IAD132E T Sometimes the Phone Does Not Ring Even When the Calling Number Is Displayed Symptom An enterprise purchases some CHINO E phones and connects these phones to the IAD132E T Sometimes when there is an incoming call the phone does ...

Page 23: ...f the carrier has not enabled the Calling Line Identification Presentation CLIP service for a PSTN number an outer office user has to spend as long as 15 seconds to connect a call to a PSTN user through the FXO port Cause The possible cause is that the CLIP service has not been enabled for the PSTN number Solution Step 1 Check whether the CLIP service is enabled for the PSTN number You can test th...

Page 24: ...he PSTN user connected to the IAD If no contact the carrier to enable the CLIP service If yes go to Step 2 Step 2 Replace the phone with a phone that is running properly and check whether the fault is rectified If yes the phone is faulty Replace the phone If no go to Step 3 Step 3 Gradually lower the DSP gain Run the following command and checkwhether the fault is rectified TERMINAL advanced confi...

Page 25: ...device failed to collect the complete called number Solution Step 1 Run the display sip digitmap command to view the digitmap Check whether the number dialed matches another digitmap If yes modify the digitmap For example if the digitmap is 45xxx 456 and the dialed number is 4567 the number sent is 456 If no go to Step 2 Step 2 For outgoing calls made through the FXO port checkwhether the number d...

Page 26: ... persists go to Step 2 Step 2 Connect the phone to the telephone line of the IAD and checkwhether there is feed If yes ensure that the cables in the cable distribution frame CDF are correctly connected If no go to Step 3 Step 3 Use a telephone line delivered with the device to replace the existing one If the problem is resolved the procedure ends If the problem persists go to Step 4 Step 4 Replace...

Page 27: ...is not supported Replace the phone If no go to Step 2 Step 2 Compare signaling streams and check whether the signaling stream is normal when the fault occurs If yes go to Step 3 If no locate the fault based on the abnormal signaling Step 3 Check whether a PC or cascaded switch is connected to the IAD If yes connect the PC or cascaded switch to the upstream switch because PCs or data communication ...

Page 28: ...f yes the procedure ends If no go to Step 4 Step 4 Contact Huawei technical support End 2 1 18 When the IAD Is Connected to the IMS Users Cannot Make Calls to Each Other Symptom When the IAD is connected to the IMS users cannot make calls to each other Cause The possible cause is that signaling interaction is abnormal Solution Step 1 Capture IAD packets to analyze the signaling stream If the IMS r...

Page 29: ...RI Step 2 Run the sip soft parameter support telurl off command to disable support telurl Step 3 Check whether the fault is rectified If yes the procedure ends If no go to Step 4 Step 4 Contact Huawei technical support End 2 1 20 Calls Between IAD Users Are Disconnected Sometimes Symptom ASoftCo9500 and 23 IADs are connected to the external network through the PRAtrunk Calls between IAD users or O...

Page 30: ...port is set to half duplex mode The called party enables the RTP encryption function The SIP signaling media negotiation is abnormal Solution Step 1 Run the display interface command in the Ethernet switch mode to view the duplex mode of the IAD network port If the duplex mode is half duplex run the duplex command to set the IAD to auto negotiation mode Step 2 View the status of the networkconnect...

Page 31: ... Huawei technical support End 2 1 22 No Voice Symptom The calling parties cannot hear each other Cause The possible causes are as follows Network quality issue Opposite gateway issue Inconsistence of codec between gateways IAD device issue Solution 1 Check the status of the network that connects the IAD with the opposite gateway IAD or trunk gateway first Firewalls or NATs between devices may caus...

Page 32: ...atched to the digitmap the number 08008302 is reported which results in the call failure Step 2 Modify the digitmap delivered by ZTE softswitch to 0 2 9 xxxxxxXXX Step 3 Check whether the fault is rectified If yes the procedure ends If no go to Step 4 Step 4 Contact Huawei technical support End 2 1 24 No Prompt Tone Can Be Heard When a Phone Connected to the IAD Is Picked Up When a User Dials the ...

Page 33: ... Office calls failed Cause The possible cause is that support telurl is set to on Solution Step 1 Run the display sip support telurl command on the IAD to view the support telurl value By default the value is off If the value is on and the domain name of the SIP Server is blank the IAD cannot generate SIP messages Run the sip support telurl off command Step 2 Check whether the fault is rectified I...

Page 34: ...Huawei technical support engineers End 2 1 27 How to deal with slow call setup Symptom It takes a long time to set up calls initiated by phones connected to an IAD Possible Cause The possible causes are as follows The network quality is poor The digitmap used by the called number is unavailable on the IAD Solution Step 1 Ping the IP address of the Softswitch to check the delay time and packet loss...

Page 35: ...time delay 100 ms you can change the codec of the IAD The default codec of the IAD is G 711A you can run the sip send capability voip pri command to change the codec to G 729 to adapt the poor network environment The operations are as follows TERMINAL advanced config sip send capability voip pri 0 G729 ptime 30ms If voice intermittence still exists you are advised to improve the network quality Wh...

Page 36: ...cannot send faxes Cause The possible causes are as follows Poor bearer network performance Inconsistent faxing modes Incorrect softswitch type Solution Step 1 Ping the softswitch IP address to check the delay time and packet loss If the delay time is too long and packet loss occurs the bearer network performance is poor V erify the networkconnection If the network is normal go to Step 2 Step 2 Che...

Page 37: ...IAD is different from the actual softswitch type run the sip soft parameter soft switch type command to change the softswitch type If the softswitch types are the same go to Step 4 Step 4 Contact Huawei technical support End 2 2 2 IAD Fails to Send Faxes to ZTE Softswitches Symptom In the MGCP mode the IAD fails to send faxes to ZTE ZS SS10 Cause By default the T30 mode is configured on ZTE softsw...

Page 38: ... long and packet loss occurs the bearer network performance is poor V erify the networkconnection If the network is normal go to Step 2 Step 2 Check the consistency between the faxing modes of the softswitch and IAD Consult related personnel about the method for viewing the softswitch faxing mode To view the IAD faxing mode proceed as follows 1 Run the display protocol mode command to view the pro...

Page 39: ...tween the counter and the fax machine You can connect the cable again If no go to Step 5 Step 5 Contact Huawei technical support End 2 2 4 FAX Machines Connected to the IAD Cannot Send or Receive Faxes Symptom Fax machines connected to the IAD cannot send or receive faxes Cause The possible causes are as follows The fax service is not enabled on the softswitch The fax machine is faulty The network...

Page 40: ... supported in theMGCP service are as follows 711v2 Transfer mode transparent t38v2 T 38 mode t38v3 T 38 or transfer mode Step 5 Verify that bearer network quality is good For network quality definition see Table 2 1 Table 2 1 Network quality definition Network Status Packet Loss Ratio Network Delay ms Jitter ms Good 0 1 40 10 Poor 1 100 20 Bad 5 400 60 If the network quality is poor change the fax...

Page 41: ...ability fax pri command to delete the priority and run the sip send capability fax pri command to set thepriority again If MGCP is used run the mgcp soft parameter command to set the faxing mode to t38v2 TERMINAL advanced config mgcp soft parameter fax mode t38v2 If the network quality is good go to Step 6 Step 6 Capture IAD network packets to verify that both ends of media negotiation use the sam...

Page 42: ...the value is set to 500 10 ms that is 5 seconds If the IAD receives signals sent from the timer within 5 seconds the fax process starts If the IAD fails to detect signals in 5 seconds the modem service starts Step 2 If the configuration is incorrect adjust the setting as follows For the IAD208E M and IAD132E T choose Advanced Configuration User Port Attribute and adjust the V21 timer setting on th...

Page 43: ...0000 ms based on the site requirements For example to set the duration of the V21 timer to 500 ms run the following command TERMINAL advanced config dsp fax tone set v21Timer 500 If the Internet access speed rate through modem is low you can also use this method 4 You can run the following command to check whether you have enabled the function of checking V21 signal that the calling party receives...

Page 44: ...cable is damaged Network negotiation failed Solution 1 Ensure that the device is powered on 2 Ensure that the network cable and the port is in good connection 3 Check the network cable and replace the damaged cables 4 If you are using the IAD132E T to perform the cascading installation you are advised to perform one of the following operations Use crossover cable to connect the uplink port In the ...

Page 45: ...s change the IP address of the IAD 3 If an IP network exists between the IAD and the network destination device you can run the tracert command to check the connectivity of the network and ensure that the route between the packet and the IP network is reachable 4 If no response is received after the pinga b c d command is executed The possible causes are as follows Some of the hosts or routers in ...

Page 46: ...he IAD and the FTP TFTP server by running the pinga b c d command If the network delay is too large the loading may fail For example when you are accessing the Internet through ADSL and the connection speed is slow the loading may fail 2 Check the availability of the FTP TFTP server You are advised to enable the log function on the server The records in the log file can help solving problems of th...

Page 47: ...ates that the IP address obtaining mode is static IP address Run the ipaddress pppoe command in the global configuration mode to enable the PPPoE dialing mode and then run the pppoeuser namepasswordpassword command to set the user name and password 3 Run the following command to check whether the PPPoE is online If the PPPoE is offline check the correctness of the user name and password TERMINAL c...

Page 48: ...tion is incorrect on the IAD Solution Step 1 Connect the PC to the switch without changing the IP address and checkwhether the fault is rectified If yes the IAD configuration is incorrect Go to Step 2 If no the upper level network is disconnected Check the upper level network Step 2 Run the display nat command to verify that the NAT function is enabled for the IAD Step 3 Modify the IAD or PC confi...

Page 49: ...work fault If yes go to Step 2 Step 2 Run the display physical serial num command to verify that the physical serial number is the same as that set on the UCEMS To obtain the physical serial number set on the UCEMS contact the network administrator If the configuration is inconsistent with that on the UCEMS run the physical serial numstring command in the global configuration mode to synchronize t...

Page 50: ... Check whether the power supply is remote If yes verify that the voltage is stable If no go to Step 3 Step 3 Check whether a splitter is used If no connect a splitter to the IAD If yes go to Step 4 Step 4 Contact Huawei technical support End 2 3 9 Frequent MG Disconnection Alarm Symptom The MG disconnection alarm is generated frequently The registration status changes between Normal and Fault freq...

Page 51: ...k whether IP addresses conflict If yes change the IAD IP address If no go to Step 5 Step 5 Check whether the domain names conflict on multiple IADs If yes change the MG domain names on the IAD and MGC server to solve the conflict If no go to Step 6 Step 6 Use the Wireshark to analyze packets to check whether the softswitch responds to the heartbeat message sent by the IAD You can also run the trac...

Page 52: ...cause is incorrect data configuration Solution Step 1 Verify that a correct ID is bound to the FXO port The ID bound to the FXO port must be the DN that is SoftCo number not the EID The ID configured on the FXS port is the SoftCo EID but the ID bound to the FXO port is the DN Generally the EID is the same as the DN however there are some exceptions especially when the virtual PBX exists For exampl...

Page 53: ...anid 129 interface 6 untagged 10 tagged IAD2000 lanswitch vlan vlanid 129 interface 7 untagged 10 tagged IAD2000 lanswitch vlan vlanid 129 interface 8 untagged 10 tagged IAD2000 lanswitch tag interface 1 pvid 129 priority 0 IAD2000 lanswitch tag interface 2 pvid 129 priority 0 IAD2000 lanswitch tag interface 3 pvid 129 priority 0 IAD2000 lanswitch tag interface 4 pvid 129 priority 0 IAD2000 lanswi...

Page 54: ...ith the softswitch using MGCP Cause The possible causes are as follows The network is disconnected The configuration is incorrect The authentication information is configured on the IAD but not on the softswitch The soft parameter settings are inconsistent Solution Step 1 Check whether the softswitch can be pinged on the IAD If no verify the network connection If yes go to Step 2 Step 2 Check whet...

Page 55: ...swiping server is faulty Solution Step 1 Run the display sip digitmap command to check whether the digitmap is configured for card swiping numbers If no configure the digitmap and verify that the fault is rectified Step 2 Capture network packets to analyze slow and fast card swiping processes Verify that the IAD processing mechanism is the same and no packet loss delay or jitter occurs Step 3 Veri...

Page 56: ...o check whether the local switch is enabled If the value of Switch is on run the sip local call disable command to disable the local switch and run the write command to save the configuration If the local switch is disabled go to Step 4 Step 4 Contact Huawei technical support engineers End 2 3 16 Why outgoing calls cannot be made when the IAD connects to the IMS Symptom IAD users cannot make calls...

Page 57: ...ng Each Other Symptom Twocascaded IAD132E T s cannot ping each other Cause The possible causes are as follows The two IADs are connected through a direct connect cable but the cable check function is not enabled The network is disconnected or the power supply is faulty IP addresses are not in the same network segment Solution Step 1 Run the cable check enable command on the upstream IAD The two IA...

Page 58: ...rs Step 2 Connect a switch to the ONU ONT and connect all IADs to the switch Check whether the fault is rectified If yes the procedure ends If no go to Step 3 Step 3 Modify the configuration on the ONU ONT For details see the related ONU ONT document Step 4 Check whether the fault is rectified If yes the procedure ends If no go to Step 5 Step 5 Contact Huawei technical support End 2 3 19 IAD Canno...

Page 59: ...nfiguration is the same as that on the softswitch If no run the mgcp mg domain name command on the IAD or choose MGCP Service Configuration MG to change the domain name If yes go to Step 4 Step 4 Check whether the softswitch configuration is correct For details see the related softswitch document If yes go to Step 5 If no modify the softswitch configuration Step 5 Verify that the phone number is n...

Page 60: ...hnical support End 2 3 21 Two IADs on the Same VLAN Cannot Ping Each Other and the Phone Does Not Ring When a User Under One IAD Makes a Call to Another User Under the Other IAD Symptom Two IADs on the the same VLAN cannot ping each other When a user under one IAD makes a call to another user under the other IAD the phone does not ring Cause The possible causes are as follows The network is discon...

Page 61: ...the power or the operation log will be lost 2 Pull off power supply and then power on the device to restart it 3 After the system is restarted run the display log command to view the operation log run the display alarm history all command to view the alarms and enter the diagnose mode to view the exceptions 4 Run a command again If the command cannot be run go to the next step 5 Contact Huawei tec...

Page 62: ...ed for inputs from the keyboard and the system does not automatically restart Cause The possible causes are as follows If the IAD uses the DHCP to automatically obtain the IP address the fault may be caused because the IP addresses in the network are not sufficient for allocation and the waiting queue is too long When domain name is used for registration to the UCEMS if the DNS does not exist or h...

Page 63: ...e 1 3 5 Contacting Technical Support 2 3 25 IAD Restarts for No Reason Symptom The system automatically restarts when it is running Cause The fault may be caused because a user who logs in to the IAD sends a command that leads to system restart or system exceptions occur Solution 1 Run the display log command in the privilege mode to view the operation log Check whether other users send commands t...

Page 64: ...ade server to the IAD through the UCEMS check whether the IAD is registered with the UCEMS 3 If an upgrade server is set on the IAD ensure that the correct IP address of the FTP server FTP user name password and file path are set in the auto update ftpserver command 4 If the connection to the FTP server is available you can check whether the IAD obtains the upgrade file and whether the software ve...

Page 65: ...ages or CLI to locate and analyze call faults The IAD records call failure information about all user ports including calling number called number call start and end time the party that releases the call and the call release cause 3 4 Checking the Network Status Automatically By using this function you can check the connection between an IAD and a specified device If enable the function the IAD ge...

Page 66: ...g status of the IAD Indicators of the IAD101H 102H and 104H Indicat or Colo r Item Status Description PWR Green POWER indicator On Indicates that the power is on Off Indicates that the power is off WAN Green Uplink interface indicator On for the IAD101H and 102H only Indicates that aconnection is set up on the WAN Blinking for the IAD104H only Indicates that aconnection is set up on the WAN Off In...

Page 67: ... telephone interface indicators of the IAD101H 102H and 104H are 1 2 and 4 respectively Indicators of the IAD208E M Indicator Name Abnormal Status Fault Type Cause and Rectification Method POWER indicator PWR Off when the IAD is powered on System fault The IAD failed to start If the AC power supply is normal and cables are connected the internal power module of the IAD is faulty The IAD needs to b...

Page 68: ...rogram file is corrupted Reload the latest program file by referring to the upgrade guide Fast blinking 0 5s on and 0 5s off and then blinking 1s on and 1s off System fault The IAD takes a long period to start Rectify the fault by referring to the troubleshooting guide Uplink interface indicator WAN Off when the network cable is connected System fault The IAD failed to start Network faults T h e n...

Page 69: ...hods Issue 02 2012 02 29 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 64 Indicator Name Abnormal Status Fault Type Cause and Rectification Method t e d P P P o E d i a l i n g f a i l e d T h e I A D c a n n o t o b t a i n t h e ...

Page 70: ...or PWR Green Off when the IAD is powered on System fault The IAD failed to start If the power supply is normal and cables are connected a board on the IAD is faulty The IAD needs to be repaired RUN indicator RUN Green Off when the IAD is powered on System fault The IAD does not respond or the serial port is faulty 1 Press the Reset button to restart the device Do not turn off the power otherwise t...

Page 71: ...o the troubleshooting guide ALM indicator ALM Red Blinking Syste m fault Call fault The IAD generates an alarm at the critical severity or above This alarm may affect the operation of the IAD or the normal utilization of the service For details see Processing IAD Alarms Indicators of the IAD1224 Boa rd Indi cator Na me Col or Status Description Fault Type Cause and Rectification Method CV P POW ER...

Page 72: ...g to the upgrade guide Fast blinking 0 5s on and 0 5s off and then blinking 2s on and 2s off System fault The IAD takes a long period to start Rectify the fault by referring to the troubleshooting guide ALM indic ator AL M Red Blinking System fault Call fault The IAD generates an alarm This alarm may affect the operation of the IAD or the normal utilization of the service For details see Processin...

Page 73: ... configuration and history alarms Proceed as follows 1 Choose Diagnose System Information in the navigation bar The system information page is displayed 2 Click Download to save or open system information The latest 10 alarms are displayed To view more alarm information view downloaded files 3 3 Viewing Call Failure Records This chapter is only for IAD208E M IAD132E T and IAD1224 You can view call...

Page 74: ...rnum calleenum startTime endTime onhookSide hookReasonType 4 81011 81009 2005 01 01 00 18 55 2005 01 01 00 19 27 remote the request is timeout from client TERMINAL config display sip calloutrecords slot 1 pstnport 2 3 4 Checking the Network Status Automatically By using this function you can check the connection between an IAD and a specified device If enable the function the IAD generates the ala...

Page 75: ...nction Step 3 Set Checked IP address to 192 163 1 8 and click OK Step 4 Save the data Choose Maintenance Save Data from the navigation bar The data storage page is displayed as shown in Figure 3 3 Figure 3 3 Save Data page Click Save as ordinary setting or Save as carrier setting and then click OK When the data is saved as the carrier setting the system automatically backs up the current setting Y...

Page 76: ...se Maintenance Network Autocheck from the navigation bar to check the network status again The page shown in Figure 3 5 is displayed Figure 3 5 Network status 2 Figure 3 5 shows that the connection between the IAD and the SIP server is restored Step 7 Choose Diagnose FXS User Registration from the navigation bar to check FXS users registration status The page shown in Figure 3 6 is displayed Figur...

Page 77: ...ep 3 Run the write command to save the settings The command is TERMINAL config write Step 4 Run the display network auto check command tocheck the configuration The command is as follows TERMINAL config display network auto check server ipaddress 192 163 1 8 network auto check on Step 5 Query the network status according to the alarm information For details see Processing IAD Alarms The informatio...

Page 78: ...tered The command is as follows TERMINAL config display sip attribute 0 Sip User Information user sn 0 id 8657187900066 password name 8657187900066 ssg comcast net local address 192 163 1 47 local port 5060 registration state registered The user is registered expire time 0 sec previous server current server 192 163 1 8 5060 dm match delay 0 ms digit map position remote dial delay position remote s...

Page 79: ...Device IP Address IAD 172 21 100 16 Maintenance terminal 1 172 21 50 51 Maintenance terminal 2 172 21 50 84 Figure 3 7 Networking of the Example for Using the PING Command Problem description When a user uses maintenance terminal 1 to log in to the IAD through Telnet sometimes the connection fails However the connection between maintenance terminal 2 and the IAD through Telnet is normal The troubl...

Page 80: ...rom 172 21 50 51 bytes 56 Sequence 3 ttl 128 time 0 ms Request time out Reply from 172 21 50 51 bytes 56 Sequence 5 ttl 128 time 0 ms Request time out Request time out Reply from 172 21 50 51 bytes 56 Sequence 7 ttl 128 time 0 ms Reply from 172 21 50 51 bytes 56 Sequence 8 ttl 128 time 0 ms 172 21 50 51 Ping statistics 10 packets transmitted 5 packets received 5 packets are received 50 00 packet l...

Page 81: ...ollowing command in the user mode TERMINAL tracert 210 12 180 18 traceroute to 210 12 180 18 max hops 30 packet 40 bytes press CTRL_C to break 1 1 ms 10 ms 10 ms 210 11 22 254 2 1 ms 2 ms 2 ms 210 110 0 17 3 1 ms 1 ms 1 ms 210 11 180 18 Trace complete 3 From the preceding result you can find out the routes that the packet goes through from the IAD to the destination MGC 3 7 Tracing Signaling You c...

Page 82: ...run the undo trace command to close the signaling tracing function 3 8 Analyzing Packets Captured by Wireshark Network packets must be captured to locate faults about broadband voice quality media and signaling interaction This topic describes how to use Wireshark previously known as Ethereal to capture data from the network for analysis Preparations You need to establish network environment and c...

Page 83: ...t the PC that is used to capture packets to the IAD The networking scheme is shown in Figure 3 10 Figure 3 10 Capturing packets by using the mirror port on the IAD Configure the mirror port on the IADs by running the TERMINAL lanswitch monitorsource portobserving portdestination port command Table 3 2 describes the parameters in the command For example TERMINAL lanswitch monitor 1 observing port 2...

Page 84: ... 1 to 8 1 to 4 1 or 2 destination port Destination mirror port Configure the port that is connected to the IAD on the PC as the destination mirror port 1 to 8 1 to 4 1 or 2 CAUTION The uplink port of the IAD which is used to connect the IAD to the superior devices and the port which is used for cascading connections cannot be set as the destination mirrored port Capturing packets by using the mirr...

Page 85: ...command toset port 18 as the source mirror port The source mirror port is monitored by the destination mirror port Step 7 Run the display mirror command to view the configuration result You can run the mirroring port Ethernet 0 1 to Ethernet 0 23 both command to monitor ports 1 to 23 or run the undo mirroring port Ethernet 0 21 to Ethernet 0 23 both command to cancel the monitoring on ports 21 to ...

Page 86: ...displayed Use defined filters 1 Click on the right of the toolbar to enable the common filtering conditions A dialog box as shown in Figure 3 13 is displayed Figure 3 13 Setting Filtering Conditions 2 For example to view only the packets whose destination IP address is 10 166 49 255 you need to select IP address 192 168 0 1 in Filter change the IP address in the Filter string text box to 10 166 49...

Page 87: ...the protocol stack is shown in Table 3 3 You need to pay attention to the RTP and SIP protocols Table 3 3 Structure of SIP Signaling ProtocolStack Remote Maintenance Through Telnet Voice Call Control Telnet RTP RTCP SIP TCP UDP IP MAC For MGCP services the structure of the protocol stack is shown in Table 3 4 You need to pay attention to the RTP and MGCP protocols Table 3 4 Structure of MGCP Signa...

Page 88: ... Assume that the SIP and RTP packets need to be analyzed Analyzing SIP packets 1 Choose Telephony VoIP Calls as shown inFigure 3 15 Figure 3 15 Selectingcall related packets 2 Select a call based on the calling number and called number as shown in Figure 3 16 Figure 3 16 Selecting the number of calls 3 Click Flow The SIP signaling flow for the call is displayed as shown in Figure 3 17 ...

Page 89: ...Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 84 Figure 3 17 SIPsignaling flow Analyzing RTP packets 1 Choose Telephony RTP Show All Streams as shown in Figure 3 18 Figure 3 18 Selecting all RTP packets 2 Select the data to analyze as shown in Figure 3 19 ...

Page 90: ...cket analysis result By performing the preceding steps youcan analyze the RTP stream and evaluate the quality of the bearer network based on the packet loss jitter and disorder data End 3 9 Capturing the Network Packets Remotely If the IADs are distributed widely and local capturing is not convenient you can use the remote capture function of the IAD to capture data flow that interact with the IAD...

Page 91: ...ng 3 Common Troubleshooting Methods Issue 02 2012 02 29 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 86 Procedure 1 Double click to run the capture tool The page is displayed as shown in Figure 3 21 ...

Page 92: ...r capturing Local IP The IP address of the remote packet capture server IAD IP The IP address of the IAD Port Port number The default port number 58000 is proposed User Name The user name for logging in the IAD Password The password for logging in the IAD Direction The capture direction 3 click and enter the capture file name for example iad1 Then click Save 4 Click Start to start capturing When t...

Page 93: ...switch capture signal on off Open the RTP flow capture switch capture media start direction receiveonly sendonly all userport port ID Close the RTP flow capture switch capture media stop Table 3 7 Packet capturing commands of IAD1224 Operation Command Set the packet export network port on the IAD capture out interface lan fe Set the IP address of the packet capture server and the port number captu...

Page 94: ...the voltage difference is greater than 10 V the ground is poor Step 6 Use multimeter to test the impedance between the chassis shell ground and the earth If the impedance is greater than 10 ohms the ground is poor Step 7 If you cannot test the voltage of the earth use the multimeter to test the voltage difference between the chassis shell ground and the live line naught line and earth line in the ...

Page 95: ...m Ground Bar Is Not Installed in the Equipment Room and the Ground Electrode Cannot Be Buried Nearby If a device uses 220 VAC power supply the PE line of the AC power supply can be used as the ground cable Ensure that the PE line of the AC power supply is properly grounded inside the power distribution room or beside the AC voltage transformer as shown in Figure 3 23 In addition ensure that the PE...

Page 96: ...amwhen the ground electrodecan be buried nearby Ground Impedance Requirements The ground impedance of an equipment room is determined by the equipment room environment The ground impedance of a central equipment room mustcomply with standard YDJ26 89 less than 1 ohm that of a common equipment room must be less than 5 ohms that of angle steel buried in the earth must be less than 10 ohms In the are...

Page 97: ...less than 1 6 mm2 4 Keep all metal components of acabinet in good conductibility No insulating coating can be sprayed on the connection between the metal components 5 Connect the cabinets in the same row closely by fastening captive screws and gaskets on the top of the cabinets Do not spray coating into a rectangle area of 30 x 50 mm around the connection hole for captive bolt Measures to prevent ...

Page 98: ...ansmission device 2 Equip the cables laid outdoors with the metal jacket whose two ends arewell grounded or connect the cables to the protection ground bar of the equipment room For cables inside equipment room install the lightning protection device at the device interfaces The PGND cable for the lightning protection device should be as short as possible 3 Both ends of the external conductor of t...

Page 99: ...ements Effect Ground mode Joint ground Connect the working ground PGND and lightning protection ground to the same group of ground electrodes Ground impedance 10 ohms Ground cable The cross sectional areas of PGND cables are determined by the maximum current The cables must be efficient conductor cables for example copper cable Bare connector cables cannot be used Standard and efficient ground is ...

Page 100: ...e ground impedance The method is as follows Position two ground stakes in the soil in a straight line on one side of the ground electrode X equidistant from one another The stake Y is 20 m away from the ground electrode and stake Z is 40 m away from the ground electrode The potential difference between X and Yand the current between X and Z are measured by a tester Using Ohm s Law V IR the tester ...

Page 101: ...to test the ground resistance of power supply systems telecommunication devices and lightning rods IT can also test the resistance of low resistance conductors and soil resistivity The tester consists of a handle electric generator current mutual inductors sliding resistor and galvanometer All these components are packed in plastic In addition probes and conductors are provided with the tester Pre...

Page 102: ...s are correct 2 Place the tester horizontally and ensure that the pointer is on the central line 3 Set the ratio scale to the maximum rotate the electric generator handle slowly and move the tester until the pointer is on the central line 4 When the pointer becomes stable on the central line rotate the electric generator quickly more than 150 rounds per minute and move the tester until the pointer...

Page 103: ...pes cables and railways The current probe must be 10 m away from the metal entities and the potential probe must be 50 m away If a metal entity does not connect to the ground system the distance can be shortened by 1 2 to 1 3 The conductor must bewell insulated Select a proper position for the current probe and ensure that the potential of the ground electrode is 0 after the current probe is inser...

Page 104: ... Query Related FAQs This topic provides query related FAQs including how to query devices IP addresses and version information 4 1 1 What Are the Default IP address User Name and Password Used to Log In to the IAD Q What are the default IP address user name and password used to log in to the IAD A The default IP address for IAD208E M IAD132E T IAD1224 and LAN port of IAD101H 102H 104H is 192 168 1...

Page 105: ...4 1 4 How do I view the physical sequence number of the IAD Q How do I view the physical sequence number of the IAD A You can view the physical sequence number in either of the following ways Log in to the web management system and choose Advanced Configuration UCEMS Configuration Log in to the CLI and run the enable and configure terminal commands in sequence to enter the global configuration mod...

Page 106: ...log in to the IAD management system in the following ways IAD101 102 104H Use a network cable to connect a PC to the LAN port on the IAD enter telnet 192 168 100 1 in the Run dialog box and enter the user name root and password admin by default IAD208E M IAD132E T and IAD1224 You can log in to the IAD management system in the following modes Web mode Open Internet Explorer enter http IP address of...

Page 107: ...On the page that is displayed select Factory setting and click OK Restart the IAD for the settings to take effect Log in to the CLI and run the enable and configure terminal commands in sequence to enter the global configuration mode Then run the restore vendor config command Restart the IAD for the settings to take effect IAD101H 102H 104H supports only the CLI mode 4 2 4 How to restart the IAD Q...

Page 108: ...ent system choose Advanced Configuration Protocol Mode and select SIP or log in to the CLI run the enable and configure terminal commands in sequence to enter the global configuration mode and run the protocol mode sip command To change to the MGCP mode log in to the web management system choose Advanced Configuration Protocol Mode and select MGCP or log in to the CLI run the enable and configure ...

Page 109: ...the pulse dialing function Q How do I enable the pulse dialing function A You can do as follows IAD101H 102H 104H Log in to the CLI and run the enable configure terminal and advanced commands to enter the advanced mode Then run the pstnport attribute set 0enable command If port 0 needs to be connected to the DTMF phone run the pstnport attribute set 0 disable command to disable the pulse dialing f...

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