Motorola DIMETRA MTS 2 Installation, Configuration And Basic Service Manual page 383

MTS 2 and MTS 4 Installation, Configuration and Basic Service Manual
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E1 Interface
If the site link interface had been configured to use an E1 interface, the state of the E1
interface may be determined by inspection of the front panel LEDs on the Site Controller.
E1 error conditions are indicated using its LEDs:
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The LEDs labeled as "1", "2", on E1 port indicate the physical E1 port that had been configured
for the Site Link using the .e1config MMI command.
If the LED is indicating LOS (Loss of signal) error is illuminated, this indicates that there is no E1
framing signal being detected on the configured port. This may be due to external cabling issues,
the lack of a connection to remote E1 equipment, or simply connecting the E1 feed to the wrong E1
connector on the Site Controller. If the LED is AMBER, this indicates that:
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The information provided by status bsl for an E1 interface is as follows:
SC) status bsl
Primary Site Link –
State:DOWN
HDLC Statistics:-
Good frames
Overruns | Underruns
C Line | I Line lost
CRC/framing errors
No buffers avail
Buffer overflows
6802800U74-N September 2009
Verify that the 'Current I Line and C Line states' are shown as 'ON' and that
the 'Current Clock state' is shown as 'OK'.
If LED is AMBER – FE, CRC, BPV, PD
If LED is RED – LOS
Contact your local Motorola representative or Technical Support to obtain password.
there are E1 framing errors currently being detected, this condition is usually transitory,
however, if persistent, it indicates a configuration mismatch of the E1 framing
method in use. Both ends should be either using E1 multi-frame, or double- frame,
but not a mix of the two framing modes –FE/CRC error
the remote equipment is detecting errors on the traffic it is receiving on its E1 interface -
again, this may be caused through transitory errors, or a mismatched configuration
electrical noise on the E1 connection, though this may also be caused by
faulty remote equipment –BPV error
Speed:
----Rx----
: 30
: 0
: 0
: 0
: 0
: 0
64000 bps
E1 Interface
Rear port:E1–1
----Tx----
10
0
0
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