User's Guide

Nortel Networks Confidential
39
About the iBTS
Front panel description
The connectors of the front panel are the following:
one “ATM” test port (RJ--45 connector)
two “Port 1” and “Port 2” Ethernet ports (10/100 Base T and 10 Base T connectors) used for Ethernet
access and TIL connection
one “E1/T1” connector (44--pin D--sub female connector) used for E1/T1 connection
three timing reference ports (SMB connector) for iBTS commissioning labelled “10 MHz”, “ES Out”
(Even Second Output), and “ES In” (Even Second Input)
The leds on the front panel are the following:
two corporate leds indicating the CCM status:
Green
rectangular
LED
Red triangular
LED
Status
OFF OFF BISTs results NOK, Sleep, unpowered or not inserted
ON ON Power up self--test underway
ON OFF Module should not be removed
ON BLINK Module is partially faulty
OFF ON Module may be removed, alarm state
OFF BLINK Module is waiting for Boot
BLINKING OFF, ON, or
BLINK
Downloading in progress
two synchronization status indicators: “Lock” (green led) and “Holdover” (yellow led)
one “Activity” led which indicates the module status
eight PCM status leds which indicate if the PCM link is OK (green led), if the PCM is in alarm (red
led), or if the PCM is in tri--state (amber led)
The CCM front panel also has a display witch indicates the synchronization source. The dot on the right
of the indication allows to differentiate the synchronized state.
Display
1,2,3,4,5,6,7, 8 PCM number
aorb GPS 0 or GPS 1
A active CCM
E even second external input
H holdover mode