Using a Dedicated T1/PRI ISP Link

Last Updated : Jul 04, 2013 |

This section shows an example of a dedicated WAN PPP link to an Internet Service Provider (ISP) over a set of T1 or T1 PRI line channels. The ISP must support this mode of connection and will need to provide details of the required settings. If multiple channels are to be used, then the ISP must support Multilink PPP.

Tasks for Using a Dedicated T1/PRI ISP Link

About this task

Procedure

  1. Create a New WAN Service
  2. Create the Virtual WAN Port
  3. Create an IP Route
  4. T1 PRI Trunk

Create a New WAN Service

About this task

A service is used to define connection settings such as name, password, bandwidth, etc.

Procedure

  1. Select Service to display the existing services.
  2. Click on and select WAN Service.
  3. Select the Service tab.
  4. In the Name field enter an appropriate name, such as “Internet”.

    Note that the system will also automatically create User record and a RAS record with the same name.

  5. Enter the Account Name, Password and Telephone Number details provided by the ISP.
  6. For the Firewall Profile select the firewall created previously.
  7. Click the Bandwidth tab.
    1. Set the Maximum No. of Channels to the maximum number of channels that the service should use.

      In this example, 12 channels were used.

    2. Leave all the other records at their default values.
    3. If the ISP has allocated IP address details these are entered through the IP tab.

      If the IP Address and IP Mask define a different domain from the system LAN, then NAT is automatically applied.

  8. Click the IP tab.
    1. In the IP Address field enter the IP address specified by the ISP.
    2. In the IP Mask field enter the IP Mask specified by the ISP.
    3. The settings shown are typical.

      The actual settings must match those required by the ISP. For example, if Cisco routers are being used then IPHC needs to be ticked.

  9. Click the PPP tab.

    Ensure that the following options are selected. Leave all other options at their default settings.

    • Multilink.

    • Compression Mode: Disable.

    • Callback Mode: Disable.

    • Access Mode: Digital64

  10. Click OK.

Create the Virtual WAN Port

About this task

In this stage, a WAN port is defined that actually uses T1 or T1 ISDN trunk channels.

Procedure

  1. Select WAN Port to display existing ports.
  2. Click on and select WAN Port.  
  3. In the Name field, enter either LINEx.y  where:

    • LINE must be in uppercase.

    • x is the line number. For a trunk card in Slot A, this will be 1. For a trunk card in Slot B, this will be 5.

    • y is the lowest numbered channel number to be used by the WAN link minus 1. For example, if the lowest channel to be used is channel 1 then y = 1 - 1 = 0.

  4. In the Speed field, enter the total combined speed of the maximum number of channels sets in the Service.

    In this example, 12 channels x 64000 bits = 76800.  

  5. Set the Mode to SyncPPP.
  6. In the RAS Name field, select the name used for the Service.
  7. Click OK.

Create an IP Route

About this task

By creating an IP route with blank IP address details, it becomes the default route for outgoing IP traffic.

Procedure

  1. Select IP Route to display existing routes.
  2. Click on and select IP Route.
  3. Leave the IP Address and IP Mask fields blank.
  4. In the Destination field, select the WAN service.
  5. Leave the Metric at default value of 1.
  6. Click OK.
  7. Configure the Line Channels This stage of the process differs according to the type of trunk being used.
  8. T1 Trunk Use the following for a T1 trunk.
  9. Click Line to display the existing lines.
  10. Double-click on the line previously entered in the WAN Port settings.
  11. Check that the Channel Allocation order matches that required by the ISP.

    Cisco routers typically use 1|24.

  12. Select the channels to be used in the WAN PPP link and change their Channel Type to “Clear Channel 64k”.

     

  13. Click OK.
  14. Click OKagain.
  15. Send the configuration to the system and reboot.

T1 PRI Trunk

About this task

Use the following for a T1 PRI trunk.

Procedure

  1. Click on Line to display the list of existing lines.
  2. Double-click on the line previously entered in the WAN Port settings.
  3. Check that the Channel Allocation order matches that required by the ISP.

    Cisco routers typically use 1|23.

  4. Select the channels to be used in the WAN PPP link and change their Admin to “Out of Service”.
  5. Click OK.
  6. Click OKagain.
  7. Send the configuration to the system and reboot.
Related information
Overview of Data Routing