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 
2-15 Maintenance procedure 
2
NOTE:
In an EPN the TN775C EPN Maintenanc e c irc uit pac k monitors the sanity of 
the Expansion Interfac e c irc uit p ac k. If the EI c irc uit p ac k should  c yc le 
b etween sane and  insane several times, the Maintenanc e c irc uit pac k 
hold s the EI c irc uit p ac k reset.
nIf a new Exp ansion Interfac e c...

DEFINITY® Enterprise Communications Server Release 7 Installation and 
Maintenance for Survivable Remote EPN  555-233-102  Issue 2
June 1999
SREPN Maintenance 
2-16 Maintenance procedure 
2
nEI and Tone/Cloc k sync hronization interac tions. Sync hronization is 
involved  in the link b etween two ac tive EI c irc uit p ac ks or between an 
ac tive EI c irc uit p ac k and  an ac tive SNI c irc uit p ac k. If the frequenc y of the 
clock is out of the specified range (“out of spec”), an EI fiber link c an...

DEFINITY® Enterprise Communications Server Release 7 Installation and 
Maintenance for Survivable Remote EPN  555-233-102  Issue 2
June 1999
SREPN Maintenance 
2-17 Maintenance procedure 
2
Figure 2-9. Status health screen (Release 7r)
Figure 2-10. Status health screen (SRP)
2. Under the PNC
 field  c olumn of the status health sc reen, read  whether the 
link is up
, dn
 (d own), or fe
 (far-end  on Release 7r Center Stag e systems) 
on both systems (b old  in b oth examp les) and  use Ta b l e  2 - 7...

DEFINITY® Enterprise Communications Server Release 7 Installation and 
Maintenance for Survivable Remote EPN  555-233-102  Issue 2
June 1999
SREPN Maintenance 
2-18 Maintenance procedure 
2
Administered links
1. To see how the links are ad ministered , enter list fiber-link at b oth the 
Release 7r and  the SRP terminals
. Fi g u re  2 - 1 1 (Release 7r) and  Fi g u re  
2-12 (SRP) show examp les of b oth fib er and  DS1 CONV links.
Figure 2-11. List fiber-link screen (Release 7r)
Table 2-7. Release 7r...

DEFINITY® Enterprise Communications Server Release 7 Installation and 
Maintenance for Survivable Remote EPN  555-233-102  Issue 2
June 1999
SREPN Maintenance 
2-19 Maintenance procedure 
2
Figure 2-12. List fiber-link screen (SRP)
2. Enter status sys-link UUCSS
 to ob tain status information and the c urrent 
or faulted  hard ware p ath (the list of hardware c omponents over whic h the 
link travels).
Figure 2-13. Status sys-link screen (Release 7r)
Tab le 2-8
 desc rib es when the c urrent or faulted...

DEFINITY® Enterprise Communications Server Release 7 Installation and 
Maintenance for Survivable Remote EPN  555-233-102  Issue 2
June 1999
SREPN Maintenance 
2-20 Maintenance procedure 
2
For more information on system links and  hard ware p aths, refer to:
nSYS-LINK Maintenanc e Ob jec t in Chap ter 9 of DEFINITY ECS 
Release 7 Maintenanc e for R7r
n‘‘Sy st e m  l in ks’’ on p ag e 2-44
3. Look for alarms on the c omp onents listed und er the ap p ropriate hard ware 
p ath. If any alarms are present,...

DEFINITY® Enterprise Communications Server Release 7 Installation and 
Maintenance for Survivable Remote EPN  555-233-102  Issue 2
June 1999
SREPN Maintenance 
2-21 Maintenance procedure 
2
Tab le 2-9 lists other alarmed  Maintenanc e Objec ts while in Survive mod e.
Repair the link connection
After d etermining  on whic h sid e (Release 7r or SREPN) the p roblem lies:
1. Test the fib er c onnec tion b y entering  test fiber-link 
number [a-pnc | 
b-pnc
] if duplicated, [short | long]. Fig ure 2-15 shows...

DEFINITY® Enterprise Communications Server Release 7 Installation and 
Maintenance for Survivable Remote EPN  555-233-102  Issue 2
June 1999
SREPN Maintenance 
2-22 Maintenance procedure 
2
c. Use the release fiber-link number [a-pnc | b-pnc] if duplicated, 
c ommand  to restore the fib er c onnec tions.
d . Test the fib er c onnec tion ag ain with the test fiber-link 
number 
[
a-pnc|b-pnc] if duplicated, [short | long] command.
e. If all tests on all c omp onents PASS, skip  to the ‘‘
Check system...

DEFINITY® Enterprise Communications Server Release 7 Installation and 
Maintenance for Survivable Remote EPN  555-233-102  Issue 2
June 1999
SREPN Maintenance 
2-23 Maintenance procedure 
2
Figure 2-16. Test fiber-link screen (SRP)
These Fail and  Ab ort results are ap p rop riate for Normal mod e.
2. After normal servic e is returned  to the SREPN, the SRP is in an alarmed 
state
. This is normal for the SRP and  ind ic ates that the TN2301 has 
d isc onnec ted  from the SREPN, and  the SRP is no long...

DEFINITY® Enterprise Communications Server Release 7 Installation and 
Maintenance for Survivable Remote EPN  555-233-102  Issue 2
June 1999
SREPN Maintenance 
2-24 Maintenance procedure 
2
-48V backup power to the TN2301 circuit pack
Loss of the -48V b ac kup  p ower from the wall field  to the TN2301 g enerates an 
alarm (major or minor, dep end ing  on ad ministration) ag ainst the EXT-DEV 
(External Devic e) Maintenanc e Objec t. Visually, this c ond ition is evid ent b y the 
TN2301’s red  BKUP LED...