Cisco AS5800 매뉴얼 - 페이지 7
{카테고리_이름} Cisco AS5800에 대한 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Cisco AS5800 22 페이지. Access server channelized t1/e1 trunk cards
Cisco AS5800에 대해서도 마찬가지입니다: 매뉴얼 (16 페이지)
Indicator
Color
Description
LALM
Yellow Lights when an alarm condition is
(Local
detected on incoming data.
Alarm)
RALM
Yellow Lights when the associated E1
(Remote
port has detected loss of signal
Alarm)
(LOS) or out of frame (OOF)
errors. This occurs when the
remote LIU
sends a signal to indicate
presence of remote errors.
75 (Ohm)
Green E1 trunk card only. ON indicates
75 ohms, and OFF indicates
120 ohms.
NLOOP
Yellow Lights when the port is configured
(Network
in network loopback. This is useful
Loopback)
for testing purposes.
1
LIU = line interface unit (analog physical interface). Refers to circuitry that
interfaces a serial communications circuit to a transmission medium such as
coaxial cabling.
Trunk Card Bantam Jacks
Passive port monitoring is supported through two shared bantam jacks
located at the bottom of the trunk card front panel (see ). The bantam
jacks allow you to connect a network monitoring device to the trunk
card to detect T1 or E1 errors.
The 4character LCD indicates which of the 12 T1 or E1 lines are to be
monitored or inspected using the bantam jacks.
To enable the bantam jacks for port monitoring, follow these steps:
Step 1 Push and quickly release the pushbutton (labeled monitor #)
below the LCD to toggle to the port number you want to
display.
You must release the button within two seconds to advance
through the port numbers (from 0 to 11). After port 11, the
display returns to port 0. As you advance through the port
numbers, the portassociated LEDs reflect the configuration
status and alarm conditions of the port number displayed in
the LCD.
Step 2 Push and hold the monitor button for two or more seconds to
enable the bantam jack. To disable the bantam jack and
return to toggle mode, press the button again and hold it for
two or more seconds.
When you release the button, the port no longer toggles
through the port numbers, the letter "B" is displayed in the
LCD, and the bantam jacks are enabled.
Step 3 Repeat Step 1 and Step 2 to enable the bantam jacks for each
port you wish to monitor.
Figure 6 CT1 and CE1 Trunk Card Front Panel LCD and Bantam
Jacks
1
receives errors and