Specifications

XMU+ Installation and Maintenance Guide rev.07 123
If XMU+ Is Not Answering
To check operating modes
The operating modes specified for each XMU+ line card control the signaling to and from the
PBX. See About XMU+ Operating Modes for more information.
1. Identify the correct operating mode for each line card.
See The XMU+ Delivery Checklist on page 21.
2. Follow Steps 1 to 6 of To set line card operating modes on page
102.
3. Ensure that the appropriate operating mode is displayed for the
first line card (R, for example, as shown to the right).
4. If the correct operating mode is not displayed, set the operating
mode by completing Steps 7 to 10 of To set line card operating
modes on page 102.
5. Repeat Steps 2 and 3 for every line card.
6. If the correct operating mode is displayed on all line cards,
proceed to the next troubleshooting task - To check line status.
To check line status
The Status Check feature checks the lines to ensure that a card is installed, and to show the
status of each card (for example, idle, ringing, etc.).
1. Press Enter to access the Main Menu.
2. Press the Right Arrow to reach Card on the Main Menu, and
press Enter.
3. Press the Right Arrow to select the appropriate Card #, and
press Enter.
4. Press the Right Arrow to reach Status, and press Enter.
The XMU+ will display one of the following status indicators:
 -------- - no card is installed. See To install a new line card on
page 109 to install the card.
 EEEEEEEE - a configuration problem exists. See To p er for m
an integrity check on page 125.
 YYYYYYYY - card is ready. Proceed to Step 5.
 NNNNNNNN - card is not ready (offline). Proceed to
Step 6.
5. If a T1 line card is installed, press Enter again. The XMU+
displays a T1 interface status indicator. Proceed to the next
troubleshooting task - To per for m a line check on page 124.
6. If the card fails the status check, complete the following troubleshooting tasks.
 Ensure a starting message is assigned. See Test ing XMU+ Line
Connections on page 100.
 Ensure operating mode is set correctly. See To set line card operating
modes on page 102.
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