Lucent Technologies DEFINITY Enterprise Communications Server Release 8.2 Installation And Maintenance For Survivable Remote EPN Manual

DEFINITY® Enterprise Communications Server Release 7 Installation and 
Maintenance for Survivable Remote EPN  555-233-102  Issue 2
June 1999
SREPN Maintenance 
2-25 Fault isolation procedures 
2
TN2301 has d isc onnec ted  from the SREPN, and  the SRP is no 
long er in c ontrol. Connec tions have b een re-estab lished  b etween 
the EI in the SREPN and  its EI/SNI c ounterp art in the Release 7r. 
Fault isolation procedures
Use the following  p roc ed ure to isolate faults on a fib er link. This sec tion...

DEFINITY® Enterprise Communications Server Release 7 Installation and 
Maintenance for Survivable Remote EPN  555-233-102  Issue 2
June 1999
SREPN Maintenance 
2-26 Fault isolation procedures 
2
3. Type pnc
 in the Category
 field , then c hoose En t e r.
NOTE:
Sinc e the system is in Survive mod e, the Release 7r thinks it has lost 
its c onnec tions to the EPN. Therefore, alarms may b e p resent, even 
thoug h the p rob lem has been diag nosed  and  fixed .
4. Look for any 
on-b oard alarms other than...

DEFINITY® Enterprise Communications Server Release 7 Installation and 
Maintenance for Survivable Remote EPN  555-233-102  Issue 2
June 1999
SREPN Maintenance 
2-27 Fault isolation procedures 
2
c . After rep lac ing  an SNI c irc uit p ac k, c lear alarms b y exec uting  test 
board UUCSS long clear
 for all alarmed  EXP-INTF c irc uit p ac ks. 
Wait 5 minutes for any SNI-BD or SNI-PEER alarms to c lear.
NOTE:
You c an sp eed  this p roc ess with clear firmware counters 
[a-pnc
|b-pnc
] for the repaired...

DEFINITY® Enterprise Communications Server Release 7 Installation and 
Maintenance for Survivable Remote EPN  555-233-102  Issue 2
June 1999
SREPN Maintenance 
2-28 Fault isolation procedures 
2
NOTE:
Test #759 may fail if SNI c irc uit pac ks are p resent.
15. If 
all of the tests p ass, c lear the alarms b y exec uting  test board UUCSS 
long clear
 f o r  a l l a la r m e d  EXP- I N TF c i rc u i t  p a c ks .  Wa it  5  m i n u t e s f o r  a n y 
SNI-BD, SNI-PEER, FIBER-LK, or DS1C-BD alarms to c...

DEFINITY® Enterprise Communications Server Release 7 Installation and 
Maintenance for Survivable Remote EPN  555-233-102  Issue 2
June 1999
SREPN Maintenance 
2-29 Fault isolation procedures 
2
6. If No, Did  SNI Test #756 fail? 
a. If 
Ye s, rep lac e the SNI c irc uit pac k and  the lig htwave transc eiver (if 
p resent) and  g o bac k to Step  12 in the ‘‘
Gather information’’ 
p roc ed ure ab ove.
7. If 
No, Did  EXP-INTF Test #240 fail?
a. If 
Ye s, rep lac e the EI c irc uit p ac k and  g o b ac k...

DEFINITY® Enterprise Communications Server Release 7 Installation and 
Maintenance for Survivable Remote EPN  555-233-102  Issue 2
June 1999
SREPN Maintenance 
2-30 Fault isolation procedures 
2
13. Did  the test return Board not inserted 
for the near-end  c irc uit p ac k 
(nearest the SPE),  o r  f o r  t h e  f a r- e n d  c irc u i t  p a c k i n  a  s im p l e x  PN C ?
a.  If 
Ye s, replac e the c abling  b etween the DS1C c irc uit p ac k and  the 
SNI or EI c irc uit p ac k.
b . Wait 1 minute...

DEFINITY® Enterprise Communications Server Release 7 Installation and 
Maintenance for Survivable Remote EPN  555-233-102  Issue 2
June 1999
SREPN Maintenance 
2-31 Fault isolation procedures 
2
Fiber direct-connect system
Fi g u re  2 - 1 7 shows the loopbacks performed on the SNI and EI circ uit packs.
Figure 2-17. Fiber fault isolation tests for SNI and EI circuit packs
Fi g u re  2 - 1 7
 shows that:
nTest #756 rep orts the result of the off-b oard  loop b ac k
nTest #757 rep orts the result of the...

DEFINITY® Enterprise Communications Server Release 7 Installation and 
Maintenance for Survivable Remote EPN  555-233-102  Issue 2
June 1999
SREPN Maintenance 
2-32 Fault isolation procedures 
2
DS1 CONV system
Ad d itional DS1-CONV loop b ac k tests c an further isolate the p rob lem as shown in 
Fi g u re  2 - 1 8
.
Figure 2-18. DS1 CONV loopback tests
Fi g u re  2 - 1 8
 shows that:
nIf Test #799 fails at LB1, the p rob lem is with DS1C #1, CSU #1, or the 
c onnec tions b etween them.
nIf Test #799 p...

DEFINITY® Enterprise Communications Server Release 7 Installation and 
Maintenance for Survivable Remote EPN  555-233-102  Issue 2
June 1999
SREPN Maintenance 
2-33 Fault isolation procedures 
2
2. If this test p asses from b oth sid es, b ut other tests fail, suc h as Test #241, 
this c ond ition ind ic ates either a faulty lig htwave transc eiver or a faulty fib er 
c ab le. To d etermine if either a lig htwave transc eiver or the fib er itself has 
failed, exec ute the Exp ansion Interfac e ‘‘
Manual...

DEFINITY® Enterprise Communications Server Release 7 Installation and 
Maintenance for Survivable Remote EPN  555-233-102  Issue 2
June 1999
SREPN Maintenance 
2-34 Fault isolation procedures 
2
5. If the system has a two-level switc h node c arrier c onfig uration, that is (all 
must ap p ly)
nSNI-SNI fib er links exist
nThe SNIs and  SNCs in the sec ond  switc h nod e c arrier only (the 
switc h nod e c arrier that has no SNI c onnec ted  to the PPN EI) are 
not inserted
nAt least two SNI-SNI fib er...