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210-0000025 rev04
0db (Default)
Receivers on most newer T1 equipment (repeaters, switches, etc.) can automatically adjust
for incoming amplitude, allowing them to run at zero attenuation regardless of distance.
-7.5db, -15db or -22db
Some older T1 equipment (repeaters, switches, etc.) cannot automatically adjust for
incoming amplitude, in which case, it may be necessary to set attenuation manually
(through NMS) from the choices above.
Timing
Local (Default)
The transmit clock source will originate from an oscillator onboard the TAM1500-12.
Loop
The transmit clock source will originate from the remote T1 modem.
ADDITIONAL INFORMATION
LED Indicators
LED State Indication Additional Information
PWR (Power) solid green unit is operational If the Power LED is not illuminated, it is
unlikely the TAM1500-12 is receiving power
and none of the LEDs will be illuminated.
T1 LK (Link) solid green T1 connection is established A T1 link exists and the port may be
transmitting data but it is not receiving any
packets from the remote T1 modem.
pulsing
green
T1 connection is established and
active
The port is receiving valid data or status
packets from the remote T1 modem.
no
illumination
Red Alarm
The incoming connection to the port
has been lost; no data is being
received.
If the outgoing connection from the port
has also been lost then the remote T1
modem will be in Red Alarm as well.
T1 RX
(Receiving)
flashing
amber
T1 activity The port is either receiving data from the
remote T1 modem or statistical packets
from the IP DSLAM management.
solid amber heavy Rx traffic The port is receiving large amounts of data
from the remote T1 modem.
no
illumination
no activity A link may exist but the port is not
receiving any data from the remote T1
modem.