Verilink APS 2000 T1 Line Protection (880-502411-001) Product Manual - Manual (Page 69)

Diagnostics
Verilink APS 2000 User Manual 5-5
Figure 5-4 Diagnostics Menu
Status Messages The status messages which may appear on the Diagnostics Menu
are listed in
Table 5-1 below:
Table 5-1 Diagnostic Menu Status Messages
APS DIAGNOSTIC -- FW Rev 4.0 HW Fab 0.8 Type TAC 2110 -- APS DIAGNOSTIC -- FW Rev 4.0 HW Fab 0.8 Type TAC 2110 -- APS DIAGNOSTIC -- FW Rev 4.0 HW Fab 0.8 Type TAC 2110 -- APS DIAGNOSTIC -- FW Rev 4.0 HW Fab 0.8 Type TAC 2110 --
|-----------------------| ALARM |-----------------------| ALARM |-----------------------| ALARM |-----------------------| ALARM
| | FRAME LOSS
| | FRAME LOSS | | FRAME LOSS | | FRAME LOSS
-------<< eq <<-------|----------|f|----------|-------<< net <<-------
-------<< eq <<-------|----------|f|----------|-------<< net <<------- -------<< eq <<-------|----------|f|----------|-------<< net <<------- -------<< eq <<-------|----------|f|----------|-------<< net <<-------
| |r| | SIGNAL LOSS
| |r| | SIGNAL LOSS | |r| | SIGNAL LOSS | |r| | SIGNAL LOSS
| |a| |
| |a| | | |a| | | |a| |
| |m| | CRC ERRORS
| |m| | CRC ERRORS | |m| | CRC ERRORS | |m| | CRC ERRORS
PULSES | |e| |
PULSES | |e| | PULSES | |e| | PULSES | |e| |
------->> eq >>-------|----------|r|----------|------->> net >>-------
------->> eq >>-------|----------|r|----------|------->> net >>------- ------->> eq >>-------|----------|r|----------|------->> net >>------- ------->> eq >>-------|----------|r|----------|------->> net >>-------
| |
| | | | | |
|-----------------------|
|-----------------------| |-----------------------| |-----------------------|
X) exit menu Y) enable loops Z) reset alarm T) test time (15 SEC)
X) exit menu Y) enable loops Z) reset alarm T) test time (15 SEC) X) exit menu Y) enable loops Z) reset alarm T) test time (15 SEC) X) exit menu Y) enable loops Z) reset alarm T) test time (15 SEC)
__eq loops__ __err counter__ __net signals__ __net loops__ __eq loops__ __err counter__ __net signals__ __net loops__ __eq loops__ __err counter__ __net signals__ __net loops__ __eq loops__ __err counter__ __net signals__ __net loops__
(D&I_56K)
(D&I_56K) (D&I_56K) (D&I_56K)
R) repeater A) show cntr 1) qrss L) line
R) repeater A) show cntr 1) qrss L) line R) repeater A) show cntr 1) qrss L) line R) repeater A) show cntr 1) qrss L) line
E) equip B) clear cntr 2) 3 in 24 P) payload
E) equip B) clear cntr 2) 3 in 24 P) payload E) equip B) clear cntr 2) 3 in 24 P) payload E) equip B) clear cntr 2) 3 in 24 P) payload
N) end tests 3) 1 in 8
N) end tests 3) 1 in 8 N) end tests 3) 1 in 8 N) end tests 3) 1 in 8
i) re-establish FE 4) 511 _send net loop code_
i) re-establish FE 4) 511 _send net loop code_ i) re-establish FE 4) 511 _send net loop code_ i) re-establish FE 4) 511 _send net loop code_
(D&I_56K)
(D&I_56K) (D&I_56K) (D&I_56K)
U) inband up
U) inband up U) inband up U) inband up
D) inband down
D) inband down D) inband down D) inband down
[1,1] NEAR TAC 2110 >
[1,1] NEAR TAC 2110 > [1,1] NEAR TAC 2110 > [1,1] NEAR TAC 2110 >
Message Meaning
ALARM Yellow Alarm (RAI). The CSU is receiving a Remote Alarm Indication Signal on the port.
This signal is sent by a device in a red alarm condition, such as AIS, LOS or LOF.
FRAME LOSS Out Of Frame (OOF). The CSU does not detect a valid framed signal on the port. If
pulses are also present, may indicate receipt of unframed all ones, Alarm Indication
Signal (AIS), which is often used as a Keep Alive signal on T1 circuits.
SIGNAL LOSS Loss Of Signal (LOS). The CSU does not detect any pulses on the port, this is the worst
possible alarm condition on a T1 port, ignore other alarms and resolve the cause of
the LOS first.
CRC ERRORS Cyclic Redundancy Check errors (CRC-6). The CSU detects errors using the CRC-6
feature of ESF framing, applies only to T1 circuits or equipment using ESF framing.
LOW DENSITY The T1 signal on the port does not meet the required average ones density of 12.5%.