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6.3.4 ALG

SIP ALG is Application layer gateway. If the user has an IP phone (SIP) or VoIP
gateway (SIP) behind the ADSL router, the SIP ALG can help VoIP packet
passthrough the router (NAT enabled).

Note

: SIP (Session Initiation Protocol, RFC3261) is the protocol of choice for most

VoIP (Voice over IP) phones to initiate communication.

Содержание CT-5621

Страница 1: ...CT 5621 ADSL2 Multi Port Router User s Manual Version A1 7 November 9 2007 261055 016...

Страница 2: ...tions For product update new product release manual revision software upgrade technical support etc visit Comtrend Corporation at http www comtrend com This document is subject to change without notic...

Страница 3: ...S 16 3 2 LOGIN PROCEDURE 17 3 3 DEFAULT SETTINGS 18 CHAPTER 4 DEVICE INFO 19 4 1 WAN 20 4 2 STATISTICS 21 4 2 1 LAN Statistics 22 4 2 2 WAN Statistics 23 4 2 3 ATM statistics 24 4 2 4 ADSL Statistics...

Страница 4: ...6 7 DNS 70 6 7 1 DNS Server 70 6 7 2 Dynamic DNS 71 6 8 DSL 73 6 9 PORT MAPPING 74 CHAPTER 7 DIAGNOSTICS 75 CHAPTER 8 MANAGEMENT 78 8 1 SETTINGS 78 8 1 1 Configuration Backup 79 8 1 2 Tools Update Se...

Страница 5: ...APPENDIX C SPECIFICATIONS 100 APPENDIX D SSH CLIENT 102 3...

Страница 6: ...roadband network The CT 5621 supports up to 16 contiguous virtual connections allowing for multiple simultaneous Internet connections 1 1 Features z UPnP z IP MAC address filtering z Static route RIP...

Страница 7: ...1 2 Application The following diagram depicts the application of the CT 5621 5...

Страница 8: ...rnet Link is established Off An Ethernet Link is not established LAN 4x 1x Green Blink Data transmitting or receiving over LAN Green On A USB link is established Off A USB link is not established USB...

Страница 9: ...an be used Connection to USB port Connect the USB port to a PC with a standard USB cable Connection to PWR Power Connect the Power jack to the shipped power cord Attach the power adapter to the wall o...

Страница 10: ...t and Vista 32 bit For those using Windows XP 64 bit the driver needs to be installed manually please see section 2 3 below for details and the driver is also enclosed on the CD ROM To connect the rou...

Страница 11: ...STEP 2 The following screen will be displayed Click the Next button to continue STEP 3 When the screen displays as below wait until the drivers are fully installed 9...

Страница 12: ...STEP 4 Click the Finish button when the screen displays as below STEP 5 Installation is complete 10...

Страница 13: ...pports Windows XP 64 bit To connect the router to a PC using the USB interface you need to use a standard USB cable and install the USB interface software Follow the steps below STEP 1 Connect the USB...

Страница 14: ...d and click the Next button Note This screen won t be displayed if the USB Driver has been previously un installed STEP 3 If you are installing the software from a disk insert the disk Note When the a...

Страница 15: ...STEP 4 Select the location of the file using the Browse button Normally the file is on the CD ROM shipped with the device STEP 5 Locate the Vista folder and click the OK button 13...

Страница 16: ...STEP 6 When the screen displays as below click the NEXT button 14...

Страница 17: ...STEP 7 Click the Finish button when the screen displays as below STEP 8 Installation is complete 15...

Страница 18: ...1 IP Address The default IP address of the CT 5621 LAN port is 192 168 1 1 and the default private address range provided by the ISP server in the router is 192 168 1 2 192 168 1 254 To configure the...

Страница 19: ...steps below STEP 1 Start your Internet browser Type the IP address for the router in the Web address field For example if the IP address is 192 168 1 1 type http 192 168 1 1 STEP 2 You will be prompte...

Страница 20: ...onfiguration option in the Restore Settings screen The following default settings are present when setting up the router for the first time The PC running the browser can be attached by Ethernet or US...

Страница 21: ...Chapter 4 Device Info After login the Device Info Summary screen appears as shown Note The selections available on the left side menu are based upon user permissions 19...

Страница 22: ...onnection ID Category Shows the ATM service classes Service Shows the name for WAN connection Interface Shows connection interfaces Protocol Shows the connection type such as PPPoE PPPoA etc IGMP Show...

Страница 23: ...4 2 Statistics Selection of the Statistics screen provides statistics for the Network Interface of LAN WAN ATM and ADSL All statistics screens are updated every 15 seconds 21...

Страница 24: ...ows interface statistics for ATM AAL5 interface Ethernet and USB interfaces The Network Statistics screen shows the interface statistics for the LAN interface Here provides byte transfer packet transf...

Страница 25: ...I Protocol Shows the connection type such as PPPoE PPPoA etc Interface Shows connection interfaces Received Transmitted Bytes Pkts Errs Drops Rx TX receive transmit packet in Bytes Rx TX receive trans...

Страница 26: ...f cells with undefined PTI values are discarded they are also counted here In Hec Errors Number of cells received with an ATM Cell Header HEC error In Invalid Vpi Vci Errors Number of cells received w...

Страница 27: ...Number of received AAL5 AAL0 CPCS PDUs discarded due to an input buffer overflow condition Out Discards This field is not currently used ATM AAL5 LAYER STATISTICS FOR EACH VCC OVER ADSL INTERFACE Fie...

Страница 28: ...tistics The following figure shows the ADSL Network Statistics screen Within the ADSL Statistics window a bit Error Rate Test can be started using the ADSL BER Test button The Reset button resets the...

Страница 29: ...you would obtain Rate Kbps Current sync rate Super Frames Total number of super frames Super Frame Errors Number of super frames received with errors RS Words Total number of Reed Solomon code errors...

Страница 30: ...4 2 5 Route Choose Route to display the routes that the route information has learned 4 2 6 ARP Click ARP to display the ARP information 28...

Страница 31: ...4 2 7 DHCP Click DHCP to display the DHCP information 29...

Страница 32: ...ection selection depends on whether the LAN side device typically a PC is running a PPPoE client or whether the CT 5621 is to run the PPPoE client The CT 5621 can support both cases simultaneously z I...

Страница 33: ...The auto quick setup requires the ADSL link to be up The ADSL router will automatically detect the PVC You only need to follow the online instructions that you are prompted 1 Select Quick Setup to dis...

Страница 34: ...checkbox to enable manual configuration of the connection type Un tick this checkbox to enable manual setup and display the following screen STEP 2 Enter the Virtual Path Identifier VPI and Virtual C...

Страница 35: ...put a number for the VLAN ID Click Next STEP 4 Click Next to display the following screen Choosing different connection types pops up different settings requests Enter appropriate settings that are re...

Страница 36: ...ies are dependent on the particular requirements of the ISP or the ADSL service provider The WEB user interface allows a maximum of 256 characters in the PPP user name and a maximum of 32 characters i...

Страница 37: ...N interface through DHCP Only one PC on the LAN can be connected to the remote since the DHCP server within the ADSL router has a single IP address to assign to a LAN device z NAPT and firewall are di...

Страница 38: ...cast proxy IGMP Internet Group Membership Protocol is a protocol used by IP hosts to report their multicast group memberships to any immediately neighboring multicast routers Enable WAN Service checkb...

Страница 39: ...the user would like this ADSL router to assign dynamic IP addresses DNS server and default gateway to other LAN devices select the radio box Enable DHCP server on the LAN to enter the starting IP add...

Страница 40: ...ave Reboot the router will save the configuration to the flash memory and reboot The Web UI will not respond until the system is brought up again After the system is up the Web UI will refresh to the...

Страница 41: ...P settings Notice DHCP can be enabled for PVC in MER mode if Obtain an IP address automatically is chosen Changing the default gateway or the DNS effects the whole system Configuring them with static...

Страница 42: ...is selected the Security submenu on the left side main panel will be displayed after system reboot The user can then configure firewall features after the system comes up If firewall is not used this...

Страница 43: ...nter the starting IP address and end IP address and DHCP lease time This configures the router to automatically assign IP addresses default gateway address and DNS server addresses to each of your PCs...

Страница 44: ...lick Back if you wish to modify the settings After clicking Save Reboot the router will save the configuration to the flash memory and reboot The Web UI will not respond until the system is brought up...

Страница 45: ...s provided by the ISP and click Next 4 Select the IP over ATM IPoA radio button and click Next The following screen appears Notice that DHCP is not supported over IPoA The user must enter the IP addre...

Страница 46: ...es after the system comes up If firewall is not used this checkbox should be de selected to free up system resources for better performance When system comes back after reboot the Security submenu wil...

Страница 47: ...ateway address and DNS server addresses to each of your PCs Note that the router s default IP address is 192 168 1 1 and the default private address range provided by ISP server in the router is 192 1...

Страница 48: ...lash memory and reboot The Web UI will not respond until the system is brought up again After the system is up the Web UI will refresh to the Device Info page automatically The CT 5621 is ready for op...

Страница 49: ...e following screen appears To use the bridge service tick the checkbox Enable Bridge Service and enter the service name 5 Click the Next button to continue Enter the IP address for the LAN interface T...

Страница 50: ...t and the following screen will be displayed The WAN Setup Summary screen presents the entire configuration summary Click Save Reboot if the settings are correct Click Back if you wish to modify the s...

Страница 51: ...WAN LAN Routing DSL and Port Mapping Note Shown below for your reference are the available menu options for each different configuration This screenshot is for MER and IPoA encapsulations This screen...

Страница 52: ...This screenshot is for Bridge encapsulation 50...

Страница 53: ...ction 4 1 WAN VlanID This function means one can add an 802 1Q VLAN tag on PPPoE MER or Bridge mode It means the packets are sent to WAN and a specific VlanID 802 1Q tag will be added in the Ethernet...

Страница 54: ...data and reboots the router to make the new configuration effective IP Address Enter the IP address for the LAN port Subnet Mask Enter the subnet mask for the LAN port T o configure a secondary IP ad...

Страница 55: ...rvers ber used by the server on the LAN side A maximum 32 entries an be configured Virtual Server allows you to direct incoming traffic from WAN side identified by Protocol and External port to the In...

Страница 56: ...select Custom Server When a servi are automatically configured Protocol User can select from TCP TCP UDP or UDP Enter the internal port starting number when you select Custom Server When a serv are a...

Страница 57: ...the firewall when an application on the LAN initiates a TCP UDP connection to a remote party using the Triggering Ports The Router allows the remote party from the WAN side to establish new connectio...

Страница 58: ...mber when you select custom application When an application is selected the port ranges are automatically configured Trigger Protocol User can select from TCP TCP UDP or UDP Open Port Start Enter the...

Страница 59: ...WAN that do not belong to any of the applications configured in the Virtual Servers table to the DMZ host computer Enter the computer s IP address and click Apply to activate the DMZ host Clear the I...

Страница 60: ...an IP phone SIP or VoIP gateway SIP behind the ADSL router the SIP ALG can help VoIP packet passthrough the router NAT enabled Note SIP Session Initiation Protocol RFC3261 is the protocol of choice f...

Страница 61: ...new filter name and at least one condition below All of the specified conditions in this filter rule must be satisfied for the rule to take effect Click Save Apply to save and activate the filter Out...

Страница 62: ...P address Enter source IP address Source Subnet Mask Enter source subnet mask Source Port port or port port Enter source port number Destination IP address Enter destination IP address Destination Sub...

Страница 63: ...Incoming traffic is BLOCKED To ALLOW incoming traffic an IP filter must be added To add a filtering rule simply click the Add button The following screen will be displayed To configure the parameters...

Страница 64: ...parental control simply click the Add button The following screen will be displayed Username Input Internet access user name MAC Set the MAC address to access the Internet Mon Tue Wed Thu Fri Sat Sun...

Страница 65: ...r frames will be FORWARDED except those matching with any of the specified rules in the following table BLOCKED means that all MAC layer frames will be BLOCKED except those matching with any of the sp...

Страница 66: ...Address Define the destination MAC address Source MAC Address Define the source MAC address Frame Direction Select a direction of the frame WAN Interface Selects the interface that the MAC filter rule...

Страница 67: ...6 5 Quality of Service To display the Security function you need to enable the QoS feature in the WAN Setup Choose Add to configure network traffic classes The following screen will be displayed 65...

Страница 68: ...from ENET ENET 1 4 USB or Wireless Protocol User can select from TCP TCP UDP UDP or ICMP Source IP Address Enter the source IP address Source Subnet Mask Enter the subnet mask for the source IP addre...

Страница 69: ...will accept the first received default gateway assignment from one of the PPPoA PPPoE or MER DHCP enabled PVC s If the checkbox is not selected enter the static default gateway AND OR a WAN interface...

Страница 70: ...ic routes and allows configuring static routes Choose Add or Remove to configure the static routes To add static route click the Add button to display the following screen Enter the destination networ...

Страница 71: ...l RIP Mode To configure an individual interface select the desired RIP version and operation followed by placing a check in the Enabled checkbox for the interface Click the Save Apply button to save t...

Страница 72: ...DNS assignment from one of the PPPoA PPPoE or MER DHCP enabled PVC s during the connection establishment If the checkbox is not selected enter the primary and optional secondary DNS server IP address...

Страница 73: ...s a dynamic IP address to a static hostname in any of the many domains allowing your DSL router to be more easily accessed from various locations on the Internet To add a dynamic DNS service simply cl...

Страница 74: ...S provider from the list Hostname Enter the name for the dynamic DNS server Interface Select the interface from the list Username Enter the username for the dynamic DNS server Password Enter the passw...

Страница 75: ...e T1 413 Enabled Sets the T1 413 if you want the system to use only T1 413 mode ADSL2 Enabled The device can support the functions of the ADSL2 AnnexL Enabled The device can support enhance the long l...

Страница 76: ...eate mapping groups with appropriate LAN and WAN interfaces using the Add button The Remove button will remove the grouping and add the ungrouped interfaces to the Default group As shown below when yo...

Страница 77: ...up name and then select from the available interfaces on the list Chapter 7 Diagnostics The Diagnostics menu provides feedback on the connection status of the CT 5621 and the ADSL link The individual...

Страница 78: ...ort of your DSL Router Fail Indicates that the DSL Router does not detect the Ethernet interface on your computer USB connection Pass Indicates that the USB interface from your computer is connected t...

Страница 79: ...elephone company Fail indicates that the DSL modem does not detect a signal from the telephone company s DSL network The WAN LED will stop blinking and the LED will stop illuminating i e go blank Test...

Страница 80: ...he following maintenance functions and processes Settings System Log SNMP Agent Internet Time Access Control Update software Save Reboot 8 1 Settings The Settings option allows you to back up your set...

Страница 81: ...ve your router configurations to a file on your PC Click BACKUP Settings in the main window You will be prompted to define the location of the backup file to save After choosing the file location clic...

Страница 82: ...8 1 2 Tools Update Settings The Update option under Management Settings update your router settings using your saved files 80...

Страница 83: ...t to default button If the reset button is continuously pushed for more than 5 seconds the boot loader will erase the entire configuration data saved on the flash memory NOTE Restoring system settings...

Страница 84: ...ation button is selected the following screen appears Close the DSL Router Configuration window and wait for 2 minutes before reopening your web browser If necessary reconfigure your PC s IP address t...

Страница 85: ...or to configure the System Log options The default setting of system log is disabled Follow the steps below to enable and view the system log 1 Click Configure System Log to display the following scr...

Страница 86: ...condition Notice normal but insignificant condition Informational provides information for reference Debugging debug level messages Emergency is the most serious event level whereas Debugging is the l...

Страница 87: ...s follows 8 3 SNMP Agent Simple Network Management Protocol SNMP allows a management application to retrieve statistics and status from the SNMP agent in this device Select or enter the desired values...

Страница 88: ...ime The Internet Time option under Management menu bar configures the Modem s time To automatically synchronize with Internet time servers tick the corresponding box displayed on the screen Then click...

Страница 89: ...8 5 Access Control The Access Control option under Management menu bar configures the access related parameters including three parts Services IP Address and Passwords 87...

Страница 90: ...ts or opens the access services over the LAN or WAN These services are provided FTP HTTP ICMP SNMP SSH Security Socket Share TELNET and TFTP Enable the service by checking the item in the correspondin...

Страница 91: ...Control Mode is enabled only the allowed IP addresses can access the router Before you enable it configure the IP addresses by clicking the Add button Enter the IP address Subnet Mask and select the I...

Страница 92: ...estricted access to change and view configuration of your DSL Router support is used to allow an ISP technician to access your DSL Router for maintenance and to run diagnostics user can access the Rou...

Страница 93: ...ormed using the following screen Step 1 Obtain an updated software image file from your ISP Step 2 Enter the path to the image file location in the box below or click the Browse button to locate the i...

Страница 94: ...option saves the configurations and reboots the router Close the DSL Router Configuration window and wait for 2 minutes before reopening your web browser If necessary reconfigure your PC s IP address...

Страница 95: ...is created Enable Firewall must be checked Navigate to Advanced Setup Security IP Filtering web page Outgoing IP Filtering Helps in setting rules to DROP packets from the LAN interface By default if...

Страница 96: ...er packets will be Accepted 2 Filter Name Out_Filter2 Protocol UDP Source Address 192 168 1 45 Source Subnet Mask 255 255 255 0 Source Port 5060 6060 Dest Address 172 16 13 4 Dest Sub Mask 255 255 255...

Страница 97: ...Destination Port This can take on either a single port number or a range of port numbers Packets having a destination port equal to this value or falling within the range of port numbers portX portY w...

Страница 98: ...ltering of traffic at the Layer 2 MAC Filtering is only effective on ATM PVCs configured in Bridge mode After a Bridge mode PVC is created navigate to Advanced Setup Security MAC Filtering web page Gl...

Страница 99: ...h this rule is applied Examples 1 Global Policy Forwarded Protocol Type PPPoE Dest MAC Addr 00 12 34 56 78 Source MAC Addr NA Frame Direction LAN WAN WAN Interface Selected br_0_34 nas_0_34 Addition o...

Страница 100: ...o be applied to a device other than the one on which the browser is running the MAC address of that LAN device is entered Days of the Week Days of the week when the restrictions are applied Start Bloc...

Страница 101: ...finition Pin Definition 1 4 ADSL_TIP 2 5 3 ADSL_RING 6 Pin Assignments of the RJ11 Port LAN Port RJ45 Pin Definition Pin Definition 1 Transmit data 5 NC 2 Transmit data 6 Receive data 3 Receive data 7...

Страница 102: ...tation Ethernet Standard IEEE 802 3 IEEE 802 3u 10 100 BaseT Auto sense MDI MDX support Yes ATM Attributes RFC 2364 PPPoA RFC 2684 RFC 1483 Bridge Route RFC 2516 PPPoE RFC 1577 IPoA Support PVCs 16 AA...

Страница 103: ...TP L2TP IPSec VoIP Yahoo messenger ICQ RealPlayer NetMeeting MSN X box etc Power Supply External power adapter 110 Vac or 220 Vac Environment Condition Operating temperature 0 50 degrees Celsius Relat...

Страница 104: ...the router WEB UI to enable SSH access from LAN default is enabled type ssh l admin 192 168 1 1 From WAN In the router use WEB UI to enable SSH access from WAN type ssh l support router WAN ip address...

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