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 irc uit p ac k is installed in the EPN and  
the red  LED stays on, remove the EPN Maintenanc e c irc uit p ac k 
b ec ause it may b e hold ing  the new EI c irc uit p ac k reset. 
This c an hap p en when there is a link prob lem to the EPN, and the 
EPN restarts several times.
nReinstall the maintenanc e c irc uit p ac k after the Exp ansion Interfac e 
c irc uit p ac k is p hysic ally inserted  and  the EI c irc uit p ac k’s red  LED 
is off.
Which EPN is survivable?
1. At the Release 7r terminal, typ e the list cabinet
 c ommand  and  press En t e r. 
Determine whic h EPN is “ watc hed”  b y Survivab le Remote eq uip ment b y 
looking  for the lower-c ase “s
”  b efore the letters “ EPN”  in the Type
 field  as 
shown in Fi g u re  2 -8
. 
Figure 2-8. List cabinet screen (Release 7r)
2. Onc e you have loc ated  the p hysic al eq uip ment, c hec k to see whether the 
Red  SURVIVE MODE ON LED is on, ind ic ating  that the system is in Survive 
Mod e.
EI interactions
Althoug h c omp lex to troub leshoot, the following  two interac tions with EI c irc uit 
p acks may b e present:
nAlarms log g ed  ag ainst an EPN that involve an Exp ansion Interfac e c irc uit 
pack ac ting as the Expansion Arc hangel
list cabinet                                                      SPE B
                               CABINET REPORT
No. Type Layout Room      Floor      Building    A     B     C     D     E
1    PPN 5-car  CS_1      1          ABC_DE    PN 01 PN 01 PN 01 PN 01 SN 01
2   sEPN 5-car  CS_1      1          ABC_DE    PN 02 PN 02 PN 02 PN 02 PN 02 
						

							DEFINITY® Enterprise Communications Server Release 7 Installation and 
Maintenance for Survivable Remote EPN  555-233-102  Issue 2
June 1999
SREPN Maintenance 
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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 go 
down.
— The EI c irc uit pac k rep orts slip  errors if sync hronization is not 
op erating  p rop erly.
— Examine the EI c irc uit p ac ks as a p ossib le c ause when d iagnosing 
sync hronization p rob lems.
For b oth topic s, refer to the EXP-INTF sec tion in Chapter 9 of 
DEFINITY ECS 
Release 7 — Maintenanc e for R7r
.
Testing the TN2301 function and wiring
If the SURVIVE MODE ON LED d oes not turn on when the PNC A and  B links are 
d own, then the TN2301 (SRSwitc h) d oes not d etec t the SRCntrl and SRCntrlRtn 
sig nals (see ‘‘
110 b loc k c ross-c onnec t p ins’’) from the Maintenanc e c irc uit p ac k 
(TN775C). Possible causes are the
nMaintenanc e c irc uit p ac k’s relay not c losing
nTN2301 d etec tion c irc uit malfunc tioning
nWiring  b etween the SRSwitc h (TN2301) and  the Maintenanc e (TN775C) 
circuit p ac ks is inc orrect.
To verify the d etec tion c irc uit and  wiring :
1. Momentarily short the c ross-c onnec t p ins 45 and  46 on the EPN Aux wall 
field . See ‘‘
110 b loc k c ross-c onnec t pins’’.
This should  forc e the TN2301 to switc h to Survive mod e.
2. If the red  SURVIVE MODE ON LED still d oes not lig ht, verify the wiring .
3. If the wiring  is g ood , rep lac e the TN2301 c irc uit p ac k. See ‘‘
Rep lac ing  the 
TN2301 c irc uit p ac k’’.
Health of Port Network Connections (PNC)
Dep end ing  on the c ond itions present when the system switc hed  from Normal to 
Survive mod e, it may b e in either Emergenc y Transfer or Survive mod e.
To d etermine the mod e in whic h the system is op erating :
1. Get on overall report on each cabinet’s PNC status (status health
) 
at b oth 
the Release 7r and  the SRP terminals
. Fi g u re  2 -9 shows the Release 7r 
sc reen, and Fig ure 2-10
 shows the SRP sc reen. 
						

							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
 to answer 
these two q uestions:
nIs the link p rob lem on Release 7r or the SREPN sid e?
nIs the system in Emerg enc y Transfer or Survive mode?
 
status health                                                          SPE A
 PNC: A-PNC/auto B-PNC/functional   ALARMS: Maj:   2  Min:   2  Wrn:  104
 Pwr: comm Sync:loc l    Logins:2  BUSYOUT: Trk    0  Stn:   0  Oth:   18
 Cab EmTr  Mj Mn Wn PNC     Cab EmTr  Mj Mn Wn PNC      Cab EmTr  Mj Mn Wn PNC
  1  auto-  0| 0|47 up
  2  auto-  0| 0|12 up
status health                                                                   
ALARM SUMMARY                                  CABINET STATUS
       Major:    1                             Emerg  Alarms
       Minor:    0                         Cab Trans Mj Mn Wn PNC
     Warning:   10                           1 auto-  0| 0| 5 up
BUSY-OUT SUMMARY                             2 auto-  1| 0| 0 dn
      Trunks:    0                           3 n.a.   0| 0| 0 dn
    Stations:    0
      Others:    0
PROCESSOR OCCUPANCY STATUS
Static:   1%     SM:   4%  
    CP:   0%   Idle:  95%  
CRITICAL SYSTEM STATUS
  Active SPE: A/auto
  Duplicated? SPE:n
   SPE Power: commercial
 Time Source: local    
    # Logins: 1 
						

							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 
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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 and SRP link status
If the 
Release 7r
link isAnd the SRP
link isThen the 
SRP is in Where to look for problem
Down Up Survive mod e Between Release 7r and SREPN
Down  Down Emerg enc y Transfer mod e SREPN sid e (EI c irc uit p ac k, 
transceivers, or fibers)
Up Down Normal mode No prob lem
list fiber-link                                                 Page   1   SPE A
                          FIBER LINK ADMINISTRATION
FIBER -------- ENDPOINT 1 --------  -------- ENDPOINT 2 --------
LINK# TYPE A-PNC DS1   B-PNC DS1    TYPE A-PNC DS1   B-PNC DS1    DS1
           LOC   CONV  LOC   CONV        LOC   CONV  LOC   CONV   CONV
                 LOC         LOC               LOC         LOC    TYPE
 1    sni  01E03       01D03        ei   02A01       02B02              
                                                                               
 2    sni  01E02       01D02        ei   01E01       01D01              
                                                                               
 3    sni  01E04       01D04        ei   03A01       03B02              
                                                                               
 4    sni  01E19       01D19        ei   03E01       03D02              
                                                                               
 5    sni  01E20 01E21 01D20 01D21  ei   04A01 04A02 04B02 04B03  TN574 
Primary Facility:            A                             A                   
 9    sni  01E18 02B16 01D18 02C16  ei   09A01 09A02 09B02 09B03  TN1654
Primary Facility:B           B                 B           B             
						

							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 
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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  hard ware p ath d isp lays.
list fiber-link                                             Page 1 SPE A
                        FIBER LINK ADMINISTRATION
FIBER -------- ENDPOINT 1 --------  -------- ENDPOINT 2 --------
LINK# TYPE A-PNC DS1   B-PNC DS1    TYPE A-PNC DS1   B-PNC DS1   DS1
           LOC   CONV  LOC   CONV        LOC   CONV  LOC   CONV  CONV
                 LOC         LOC               LOC         LOC   TYPE
1     sni  01A17       01B17        ei   10E01 10D02
2     sni  01A18       01B18        ei   06E01 06D02
3     sni  01E20 01E21 01D20 01D21  ei   22A01 22A02 22B02 22B03 TN574
status sys-link 01e20                                    Page   1 of   2   SPE A
     Location: 01E2001       Type/Chan: INL            Alarms: none
 Current Path: present    Faulted Path: none       Last Fault:
        State: up  
                              Current Hardware Path
            Maintenance                      Maintenance
 Location    Name       Alarms                  Location    Name       Alarms
 01A1        PKT-INT    none   
 PN 01       PKT-BUS    none   
 01E01       EXP-INTF   none   
 2 A-PNC     FIBER-LK   none   
 01E02       SNI-BD     none   
 01E20       SNI-BD     none    
						

							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, follow the maintenanc e p roc ed ures for the 
alarmed  c omp onents to c lear those alarms first.
4. To help c orroborate the information that you have gathered, inspec t the 
Release 7r Alarm and Error logs (Fig ure 2-14
). 
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 .
Figure 2-14. Display alarms screen (Release 7r)
Table 2-8. Current and faulted hardware paths
If link isCurrent hardware 
path displays?Faulted hardware 
path displays?Focus attention on 
path
up Y N current
d own N Y faulted
display alarms                                            Page   1 of   2   SPE A
                                 ALARM REPORT
Port       Maintenance On   Alt     Alarm   Svc    Ack?  Date        Date
           Name        Brd? Name    Type    State  1 2   Alarmed     Resolved
01E02      SNI-PEER    n            MAJOR                03/09/00:21 00/00/00:00
01E20      SNI-CONF    n            MAJOR                03/09/00:26 00/00/00:00
PN02       EXP-PN       n            MAJOR                03/09/00:30 00/00/00:00
PN02       EXP-PN       n            MAJOR                03/09/00:30 00/00/00:00
2 A-PNC   FIBER-LK     n            MAJOR                03/09/00:30 00/00/00:00
2 A-PNC   FIBER-LK    n           MAJOR               03/09/00:30 00/00/00:00
2 A-PNC   FIBER-LK    n           MAJOR               03/09/00:30 00/00/00:00 
						

							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 
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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 an examp le of the 
test results.
For this examp le, the fib er c onnec tion on the Release 7r sid e is b ad.
Figure 2-15. Test fiber-link screen (Release 7r)
2. If any of the test results shown in Fig ure 2-15
 fail, isolate the p rob lem:
a. Busyout the susp ec ted  fib er c onnec tion with the busyout fiber-link 
number [a-pnc | b-pnc] if duplicated, command.
b . Ensure a reliab le fib er c onnec tion to the Release 7r. See ‘‘
Fault 
isolation p roc ed ures’’ later in this c hap ter for a flowc hart of step s to 
isolate and  test fib er c onnec tions.
Table 2-9. Maintenance Objects alarmed in Survive mode
Maintenance
Object Description
DS1 CONV-BD DS1 CONV c irc uit p ac ks
EXP- L IN K Exp a ns io n  Li nk
EXP- I N TF Exp a ns io n  In t e r f ac e
DS1 CONV-BD DS1 CONV c irc uit p ac ks
SNI-BD Switc h Nod e Interfac e c irc uit pac ks
test fiber-link 2 a-pnc                                   Page 1 SPE A
                              TEST RESULTS
Port      Maintenance Name  Alt. Name  Test No.  Result            Error Code
2 A-PNC   FIBER-LK                    777       FAIL
2 A-PNC   FIBER-LK                    759       FAIL             135
2 A-PNC   FIBER-LK                    989       FAIL             241
2 A-PNC   FIBER-LK                    237       ABORT           2100
2 A-PNC   FIBER-LK                    238       ABORT           2100 
						

							DEFINITY® Enterprise Communications Server Release 7 Installation and 
Maintenance for Survivable Remote EPN  555-233-102  Issue 2
June 1999
SREPN Maintenance 
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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 
status’’ sec tion.
3. If nec essary, refer to FIBER-LK Maintenanc e ob jec t in Chap ter 9 of 
DEFINITY ECS Release 7 Maintenanc e for R7r for more information.
Reconnect the Release 7r to the EPN
!CAUTION:
Ensure that the links are rep aired  b efore proc eed ing  with the next sec tion. 
See ‘‘
Fault isolation p roc ed ures’’ for troub leshooting  help .
To rec onnec t the SREPN to the Release 7r:
1. Set the switc h on the TN2301 c irc uit p ac k to the RSTR p osition for at least 
1 sec ond  and  return the switc h to the AUTO p osition.
OR
From a remote d ial-in c onnec tion to the SRP, use the restore 
survivable-remote-link
 c ommand  to reset the SRP. See the ‘‘
Restore from 
remote loc ation’’ sec tion later in this c hap ter.
2. Check for the following LED status:
nRed  (SURVIVE MODE ON) is off 
nGreen (AUTO) is on stead y, meaning  that the SREPN is read y to 
assume proc essor c ontrol for the EPN should  another link failure 
oc c ur.
3. Wait at least 3 minutes while the EPN g oes throug h its c old  restart.
4. Chec k the status of the link c onnec tions (status health
) 
at b oth the 
Release 7r and  the SRP terminals
 to d etermine whether the link b etween 
the Release 7r and  the EPN is up  (Fi g u re  2 - 9
).
Post-reset check
Chec k to see that the following  c ond itions are met b efore leaving  the c ustomer 
p remises:
1. The EI c irc uit pac k in the SRP should  b e fast flashing . 
This is ap p rop riate 
for Normal mod e
, bec ause the links are c onnec ted  from the SREPN to the 
Release 7r. Fig ure 2-16
 sh o w s  t h e  SREPN  EI  b o a rd  t e st  re s u l t s . 
						

							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 
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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 er in c ontrol. 
Connec tions are re-estab lished  b etween the EI in the SREPN and  its 
EI/SNI c ounterp art in the Release 7r PPN, and the system is now in its 
orig inal Release 7r-EI c onfiguration.
Power alarms
Carrier power failure
A c arrier p ower failure g enerates a MAJOR alarm ag ainst the CARR-POW 
Maintenance Ob ject. This condition is evid ent b y:
nA CARR-POW alarm in the Alarm or Error log s on the R7si system (SRP). 
nThe LEDs in the SRP c ab inet are all d ark exc ep t for the yellow LED on the 
TN2301 c irc uit p ac k.
 To troub leshoot this alarm:
1. Refer to the CARR-POW Maintenanc e Ob jec t in Chap ter 10 of 
DEFINITY 
ECS Release 7 Maintenanc e for R7si
 for information on resolving  this 
alarm.
NOTE:
When p ower is restored , the system c omes up  in Normal mod e. If the 
p ower outag e is long er than the hold over time of the EPN b attery b ut 
shorter than the hold over time for the SRP battery, the R7si system (SRP) 
c an c ome up  in Survive mod e.
test fiber-link                                           Page 1 SPE A
                              TEST RESULTS
Port      Maintenance Name  Alt. Name  Test No.  Result            Error Code
01A01    EXP-INTF                     237       FAIL
01A01    EXP-INTF                     238       FAIL
01A01    EXP-INTF                     240       FAIL            1032
01A01    EXP-INTF                     241       ABORT           1033
01A01    EXP-INTF                     589       ABORT           1033
01A01    EXP-INTF                     316       PASS 
						

							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 
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-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 on stead y. To troub leshoot this alarm:
1. Review the ‘‘
MDF c onnec tions’’ section in Chap ter 1 to familiarize yourself 
with the c ab ling and  c onnec tions b oth to and  from the c ross-c onnec t wall 
field .
2. Chec k the c onnec tions to the c ab inet and wall field  b efore rep lac ing  the 
b oard. Chec k for -48V ac ross p ins 41 and  42 of the c ross-c onnec t field . 
See ‘‘
110 b loc k c ross-c onnec t p ins’’ for more information.
3. If p ower in all c ab inets is g ood, the -48V c onnec tions on the c irc uit p ac k 
may b e b ad . Rep lac e the c irc uit p ac k using  the p roc ed ures outlined  in the 
‘‘
Rep lac ing  the TN2301 c irc uit p ac k’’ section.
System resets
Resetting  the Release 7r with either the reset system 4
 or reset system 5
 
c ommands breaks d own and then re-estab lishes the PPN-to-EPN links d uring  the 
reset sequenc e. Sinc e these links may b e d own long er than 3 minutes, the 
SREPN maintenanc e c irc uit p ac k (TN775C) sig nals the TN2301 c irc uit p ac k to 
b eg in the transfer seq uenc e to Survivab le Remote Mod e. This sequenc e is 
d etailed  earlier in Ta b l e  2 - 4
.
1. Ensure that the Release 7r reset seq uenc e is c omp lete before p roc eed ing .
2. Chec k the status of the link c onnec tions (status health
) 
at b oth the 
Release 7r and  the SRP terminals
 to d etermine whether the link b etween 
the Release 7r and  the EPN is up  (Ta b l e  2 - 7
). 
3. Test the fib er c onnec tions:
a. Enter test fiber-link 
 [a-pnc | b-pnc] if duplicated, 
[short | long]  for either fib er or DS1 CONV c onnec tions.
b . If the test fails, c ontinue to troub leshoot the c onnec tion p roblem; if it 
p asses, c ontinue with Step  4.
4. Set the switc h on the TN2301 c irc uit p ac k to the RSTR p osition for at least 
1 sec ond  and  return the switc h to the AUTO p osition.
OR
From a remote d ial-in c onnec tion to the SRP, enter restore 
survivable-remote-link
  to reset the SRP. For more information see the 
‘‘
Restore from remote location’’ sec tion later in this c hap ter.
NOTE:
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