Multiservice Wan Access Router Module User's Guide

Troubleshooting X330W-2USP

Avaya X330WAN User’s Guide 83

Corrective Actions:

• Call the administrator of the remote module.

• Wait for the signal to return.

Troubleshooting X330W-2USP

You can obtain statistical information regarding module performance, error rates,

and DTE/DCE signal statuses using the

show interfaces command. X330W-2USP

does not indicate a failure via alarm LEDs.

X330W-2USP provides error messages in the following situations:

• Cable connection fault - When there is a fault with the cable connections or

when a DCE cable is connected. Check the cables and connections.

• Host communication fault - When the X330WAN can not establish a

connection with the host P330 switch. In this case, verify that the appropriate

software versions are installed in the host P330 switch.

If X330WAN (or the connected DCE) reports data errors (CRC, etc.), there might

exist a phase shift between the data and the accompanying clock. In this case use the

invert txclock command to invert the transmit clock signal (TxC) from the DCE.

Using Loopbacks

The X330W-2DS1 module supports the following loopback types:

• Diag Loopback (E1/T1) - The X330W-2DS1 CPU instructs the Line Framer to

create a loop towards the CPU. A Blue Alarm (AIS) is sent on the line to the peer

module. The Diag Loopback is illustrated in Figure 5.1.

Figure 5.1 Diag Loopback

• Local Line Loopback (E1/T1) - The X330W-2DS1 Line Framer creates a loop on

the line towards the peer module. The Local Line Loopback is illustrated in

Figure 5.2.

X330WAN

CPU

Line

Framer

WAN

Blue AlarmBlue Alarm