Configuring the T1/E1 Module

The 1-port T1/E1 Module provides the connection of a T1 or E1 (digitally multiplexed telecommunications carrier system) circuit to a SonicWall appliance using an RJ-45 jack.

The SonicWall T1/E1 module fully supports Point-to-Point Protocol (PPP) and Cisco HDLC encapsulation, and can connect to Cisco routers and HP ProCurve devices.

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NOTE: Only one T1/E1 module can be configured on each appliance.
To configure the T1/E1 Module:
1
Click on the Edit icon in the Configure column for the Interface of the expansion module you want to configure. The Edit Interface dialog displays.

The General tab allows you to set up the type of encapsulation: PPP or HDLC, as well as the management interface type and level of user security login. The Zone setting is disabled.

2
Select the desired type of encapsulation: PPP, HDLC, or Cisco HDLC. If you select a type of encapsulation other than PPP, you will need to assign the IP address and netmask.
3
If HDLC or Cisco HDLC is selected, assign the IP address and subnet mask for the network mask assigned to the subnet.These are auto-filled for you, but you can change them if desired.

If you want to enable remote management of the SonicWall security appliance from this interface, select the supported management protocol(s): HTTP, HTTPS, SSH, Ping, SNMP, and/or SSH. You can also select HTTP for management traffic. However, bear in mind that HTTP traffic is less secure than HTTPS. You can also set the level of security (HTTP or HTTPS) at this time.

4
Click on the Advanced Tab.

You will see two radio buttons, one for T1 and one for E1. Only one button should be selected at a time. Different Line Coding, Framing and Encapsulation configuration choices are offered, depending on the button.

5
Select the Clock Source: Internal or External. This selection is the same for both T1 and E1.
6
Select the Line Coding option:
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When T1 is selected, the choices are: B8ZS, AMI
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When E1 is selected, the choices are: HDB3, AMI
7
Select the Framing configuration:
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When T1 is selected, the choices are: D4 (SF), ESF
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When E1 is selected, the choices are: FAS, MFAS
8
Select the DSO speed: 56 KB or 64KB (default).

If desired, you can specify the Data DSO range.

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For T1, the range is 1 to 24 (default)
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For E1, the range is 1 to 31

Each number can be individually set. For example, “5 to 15”, “1 to 1”, 1 to 20” are valid settings.

9
Line Build Out is available with T1. The options are: 0.0 dB, -7.5 dB, -15 dB, -22.5 dB.

CRC is configured with an enable/disable check-box. When T1 is selected, the check-box is labeled CRC6, when E1 is selected the check-box is labeled CRC4.

You can also choose to enable multicast.

10
When finished with configuration, click OK.

The T1/E1 module interface will be added to the pool of available WAN interfaces