Chapter 1: Understanding ISDN and the Express XL/XLT
61200.070L1-1
Express XL/XLT User Manual
17
WAN Indicators
LNK
Flashes when the link is being negotiated; solid when the link
is active.
B1
Flashes when a call on the B1 channel is in progress; solid
when a call is connected.
B2
Flashes when a call on the B2 channel is in progress; solid
when a call is connected.
Loop
Indicates ISDN layers status. Indicator is off when layer 1 is
down. A fast flash indicates layer 1 is up and layer 2 is down.
A slow flash indicates layer 2 is up and layer 3 is down. A sol-
id illumination indicates all layers are up.
PWR
Flashes when self-test has failed; solid when unit is powered
on and self-test has passed.
Test Indicators
ERR
Illuminates when self-test or front panel test has failed.
B1/B2
Indicates test selected by front panel buttons.
Figure 1-6
Express XL/XLT LEDs
Pushbutton Tests
The echo request test can be executed by pressing the
SELECT
button one time
and pressing
TEST
. A ping test is executed by pressing the
SELECT
button
twice and pressing
TEST
. The IP address pinged comes from the previously
pinged address set in the menu. If it is blank, the default gateway is used. If
the default gateway is blank, an error is indicated. The
ERR
indicator illumi-
nates if any pings are not returned. The dial self-test is invoked from the front
panel if the
SELECT
button is pressed three times. The LDN(s) must be al-
ready programmed for this test to work.
RX
TX
LI
COL JAB
ERR
LNK
B1
B2
TEST
Express XL
LOOP PWR
SELECT
TEST
Содержание Express XL 1200070L1
Страница 14: ...List of Figures x Express XL XLT User Manual 61200 070L1 1...
Страница 16: ...List of Tables xii Express XL XLT User Manual 61200 070L1 1...
Страница 22: ...Quick Startup Guide 6 Express XL XLT User Manual 61200 070L1 1...
Страница 42: ...Chapter 2 Installation 26 Express XL XLT User Manual 61200 070L1 1...
Страница 122: ...Chapter 3 Terminal Menu Operation and Structure 106 Express XL XLT User Manual 61200 070L1 1...
Страница 130: ...Chapter 4 Troubleshooting 114 Express XL XLT User Manual 61200 070L1 1...
Страница 154: ...Appendix B Log Messages 138 Express XL XLT User Manual 61200 070L1 1...
Страница 158: ...Appendix C SNMP 142 Express XL XLT User Manual 61200 070L1 1...
Страница 164: ...Appendix E Terminal Mode Commands 148 Express XL XLT User Manual 61200 070L1 1...
Страница 174: ...Glossary 158 Express XL XLT User Manual 61200 070L1 1...
Страница 186: ...Index 170 Express XL XLT User Manual 61200 070L1 1...