Lucent Technologies Definity Release 8.2 Atm Installation Manual

							DEFINITY ECS Release 8.2 ATM Installation,
Upgrades, and Administration  555-233-124  Issue 1
April 2000
Troubleshooting 
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nHas the ATM switc h b een b ooted  using  either a reset b utton or b y turning  
the p ower off then on ag ain?
nDid  the ATM switc h g o throug h a normal p ower up  seq uenc e, inc luding  
testing  all of the LEDs?
nAre any ATM switc h FAULT LEDs lit?
nAre the remaining  ATM switc h LEDs in a normal state?
nCan you log  into the ATM switc h c onsole using  the d iagnostic  ac c ount 
from the loc al c onsole terminal or throug h telnet? If so, c hec k the system 
status
a. If the c ustomer is p rovid ing  an Ethernet c onnec tion to the ATM 
switc h, d oes the Ethernet IP address
 field have the 
customer-provided Internet address?
NOTE:
You mig ht not b e able to administer the ATM switc h throug h a 
telnet c onnec tion over the Ethernet, b ut if you are ab le to, 
make sure the Ethernet ad dress is c orrec t.
b . If the c ustomer is p rovid ing  an Ethernet c onnec tion to the ATM 
switc h, d oes the Ethernet IP mask
 field have the 
customer-p rovid ed  mask (typ ically something  like 
255.255.255.0
, althoug h other values are valid )?
c . If the c ustomer is p rovid ing  an Ethernet c onnec tion to the ATM 
switc h, d oes the IP default router
 field have the 
customer-provided Internet address?
d . If the c ustomer is p rovid ing  an Ethernet c onnec tion to the ATM 
switc h and  intend s to up load  to or d ownload  from a TFTP server, 
d oes the TFTP server
 field  have the c ustomer-p rovided  Internet 
address?
e. Does the ATM address
 field have the c orrec t network prefix (the 
first 13 b ytes)?
f. On th ATM switc h, is the PVC ad ministered c orrec tly? 
						

							DEFINITY ECS Release 8.2 ATM Installation,
Upgrades, and Administration  555-233-124  Issue 1
April 2000
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Administration
Is DEFINITY ECS ATM-CES administered correctly?
D-channel problems. 
If the D-c hannel d oes not c ome up  following  CES 
ad ministration, use the following  step s to troubleshoot the c ause.
Table 6-5. Troubleshooting CES 
ÖStep Action Description
1. Verify PVC is c orrectly 
ad ministeredCheck VPI/VCI (change signaling-group
 siggrpnbr, 
screen 2)
2.Check channel 
numb erCheck that b oth end s of the emulated  c ircuit have the 
same numb er of c hannels (change signaling-group
 
siggrpnbr
, screen 2).
3. Check trunks Both end s of the emulated  circuit have the same numb er 
of trunks (change trunk-group 
trkgrpnbr, sc reen 6).
NOTE:
A trunk group  can c ontain either ISDN or ATM trunks 
b ut not b oth.
4. Check channels  Both end s of the emulated  circuit use the same channel 
numb ers (change signaling-group 
siggrpnbr, screen 2). 
Use the same c hannel numb ers for the p ort to c hannel 
map p ing  (p ag e 2) for the other end . See 
‘‘Changing the 
port-to-channel mapping’’ on page 5-22 for more 
information.
5. Chec k maximum 
numb er of emulated  
circuitsThe maximum numb er of emulated  c ircuits (signaling 
g roup s) on a sing le ATM c irc uit p ac k is 8. 
nEach circuit pack can have more than one signaling 
g roup  and  more than one D-c hannel
nThe D-channel from one emulated  c ircuit c annot 
sig nal for the bearer channels of another emulated  
circuit (no Nonfac ility Assoc iated Signaling for virtual 
circuits).
6. Check minimum ports 
for emulated  c irc uitA minimum of 7 p orts must b e administered  for eac h 
emulated c irc uit as follows:
nat least 6 bearer (B) c hannels
none signaling (D) c hannel (req uired)
Continued on next page 
						

							DEFINITY ECS Release 8.2 ATM Installation,
Upgrades, and Administration  555-233-124  Issue 1
April 2000
Troubleshooting 
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NOTE:
Port numb ers on eac h end  of the emulated  c irc uit d o not have to matc h.
Is the ATM switch administered correctly?
To verify that a sp ec ific  Luc ent ATM switc h was ad ministered  c orrec tly, refer to 
the ap p rop riate referenc e g uid e.
TN2305/TN2306 circuit pack 
Did the TN2305/TN2306 come up correctly?
1. Review the LED c ond itions for the TN2305/TN2306 (refer to the 
ap p rop riate maintenanc e b ook for LED ind ic ations):
nDo the TN2305/TN2306 LEDs ind ic ate a normal operational state 
(any of the following ):
— Ac tive in the PPN
— Stand b y in the PPN
— Arc hang el mod e in the EPN
7. Check D-channel 
ad ministrationThe D-c hannel is ad ministered  in a p ort numb ered  
009–032 (display signaling-group 
siggrpnbr, screen 2).
NOTE:
The D-channel is automatic ally p op ulated  in 
channel 24 (T1) and c hannel 16 (E1) and  this must 
match on b oth end s.
8. Check trunk limits DEFINITY trunk limits must not b e exceeded  (see 
Table 
6-6)
Table 6-6. DEFINITY ECS trunk capacities by model
Capacity c, csi, si r
Maximum trunks p er trunk g roup 99 255
Maximum numb er of trunk g roup s 99 666
Maximum numb er of trunks in the system 400 4000
Continued on next page
Table 6-5. Troubleshooting CES  — Continued
ÖStep Action Description
Continued on next page 
						

							DEFINITY ECS Release 8.2 ATM Installation,
Upgrades, and Administration  555-233-124  Issue 1
April 2000
Troubleshooting 
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— Stand b y in the EPN
— C ES in  a n y  PN
2. If after c irc uit pac k insertion or a d emand  reset:
nDo the TN2305/TN2306 LEDs ind ic ate that it is b ooting ?
nDo the TN2305/TN2306 LEDs ind ic ate it is d ownload ing  its DSPs?
nDo the TN2305/TN2306 LEDs ind ic ate that c irc uit p ac k is not 
c omp letely inserted ?
nDo the TN2305/TN2306 LEDs ind ic ate a maintenanc e alarm?
3. If the TN2305/TN2306 is inserted and  shows a vintag e numb er, typ e test 
board 
UUCSS and  p ress En t e r; Screen 6-1 d isp lays.
Screen 6-1. Screen output for test board 
number
nTh e  Result
 field should  show PASS
 for eac h test numb er. If any of 
the tests fail, refer to the ATM-TRK maintenanc e ob jec t in one of the 
following  books:
— DEFINITY Enterp rise Communic ations Server Release 8 
Maintenanc e for R8r
test board 1b11                                                        Page   1 
                                                                               
                                 TEST RESULTS
Port        Maintenance Name  Alt. Name Test No. Result            Error Code
01B11       ATM-TRK                     598      PASS                    
01B11       ATM-TRK                     1293     PASS              888   
01B11       ATM-TRK                     1259     PASS                    
01B11009    ATM-BCH           001/006   255      PASS    
01B11009    ATM-BCH           001/006   256      PASS           
01B11009    ATM-BCH           001/006   257      PASS                 
01B11010    ATM-BCH           001/001   255      PASS             
01B11010    ATM-BCH           001/001   257      PASS            
01B11011    ATM-BCH           001/002   255      PASS                   
01B11011    ATM-BCH           001/002   256      PASS                 
01B11011    ATM-BCH           001/002   257      PASS               
01B11012    ATM-BCH           001/003   255      PASS                    
01B11012    ATM-BCH           001/003   256      PASS                  
01B11012    ATM-BCH           001/003   257      PASS                  
01B11013    ATM-BCH           001/004   255      PASS                
01B11013    ATM-BCH           001/004   256      PASS                  
01B11013    ATM-BCH           001/004   257      PASS                  
01B11014    ATM-BCH           001/005   255      PASS                 
01B11014    ATM-BCH           001/005   256      PASS                 
01B11014    ATM-BCH           001/005   257      PASS                   
01B11200    ATM-BCH           001/007   255      PASS                    
01B11200    ATM-BCH           001/007   256      PASS                 
01B11200    ATM-BCH           001/007   257      PASS                    
01B11015    ATM-DCH                     643      PASS                    
1           ATM-SGRP                    636      PASS                    
1           ATM-SGRP                    1291                       
1           ATM-SGRP                    647  
						

							DEFINITY ECS Release 8.2 ATM Installation,
Upgrades, and Administration  555-233-124  Issue 1
April 2000
Troubleshooting 
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— DEFINITY Enterp rise Communic ations Server Release 8 
Maintenanc e for R8si
— DEFINITY Enterp rise Communic ations Server Release 8 
Maintenance for R8csi
Possible causes
1. The TN2305/TN2306 c irc uit p ac k is in a slot d ifferent from the DEFINITY 
ad ministration.
2. The TN2305/TN2306 was not c omp letely inserted .
ATM signaling architecture
Troub leshooting  interop erability b etween the DEFINITY ECS switc h and  the ATM 
switc h involves understand ing  the arc hitec ture of ATM sig naling (Figure 6-1
). A 
Luc ent Cajun A500 is used to show this c onc ep t.
Figure 6-1. ATM signaling architecture
The following list shows the ATM-stack layers d iscussed  in this sec tion:
nPhysical layer
nSONET/SDH layer
nCall processing (CaPro) Layer
Physical layer
Is there an optical signal between the TN2305/TN2306 and the ATM switch?
1. Id entify the OC-3/STM-1 p orts on the ATM switc h that have DEFINITY p ort 
networks attac hed .
TN230X DEFINITY
PPNDEFINITY
EPNFiber Fiber
iodatrb LJK 052899
A500
ATM call control
Port boardsSwitch
processor
Switch
fabric
Q.93B
Q.SAAL
AT M
SONET
PhysicalQ.93B
Q.SAAL
AT M
SONET
PhysicalCaPro
TN230X 
						

							DEFINITY ECS Release 8.2 ATM Installation,
Upgrades, and Administration  555-233-124  Issue 1
April 2000
Troubleshooting 
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nBe aware that c ustomers may use other p orts on the ATM switc h for 
ap p lic ations unrelated  to DEFINITY (LAN traffic  or multimed ia 
ap p lic ations, for examp les). 
nThese other applications may manifest themselves in the output of 
the troub leshooting  c ommand s you run on the ATM switc h. 
DEFINITY p ort networks must be id entified by their ATM switc h p ort 
numb ers. 
NOTE:
The following  examples show DEFINITY p ort networks 
c onnec ted  to ATM switc h p orts A1.1 and A1.2.
2.Does the TN2305/TN2306’s YELLOW LED flash 100 ms on and  100 ms off, 
indic ating a loss of sig nal on the fiber? Rec all that the TN2305/TN2306 
d etec ts c ontinuity p rob lems with either the transmit (b ottom) or the rec eive 
(top ) fib ers.
If the fib er shows a loss of signal, refer to the “ Fiber Fault Isolation 
Proc ed ure”  in DEFINITY ECS Maintenanc e for R8r.
3. Is the ATM switc h port’s LED ind ic ating  a loss of sig nal on the fib er? Note 
that the ATM switc h may d etec t c ontinuity p roblems only with the rec eive 
fib er; the state of the transmit fib er mig ht not b e d etec ted .
4. Refer to your ATM switc h’s q uic k referenc e g uid e for troub leshooting  
commands.
Possible causes. 
Check the following  list for possible c auses.
nThe fib er is d isc onnec ted  from the ATM switc h and /or the TN2305/TN2306 
circuit pack.
nThe transmit and  rec eive fib ers are swap p ed  at the ATM switc h or the 
TN2305/TN2306 c irc uit p ac k (b ut not b oth).
nThere is a b reak in the fib er.
nThe TN2305/TN2306 is not transmitting  a c arrier (not inserted , not 
p owered , or not ad ministered ). See the ATM-TRK maintenanc e 
ob jec t in one of the following  b ooks:
— DEFINITY Enterp rise Communic ations Server Release 8 
Maintenanc e for R8r
— DEFINITY Enterp rise Communic ations Server Release 8 
Maintenanc e for R8si
— DEFINITY Enterp rise Communic ations Server Release 8 
Maintenance for R8csi
nHard ware safety interloc ks on optic al transc eivers may c ut transmitter 
p ower if no c arrier is rec eived , so lac k of a rec eive c arrier c ould  ind ic ate a 
transmitter p rob lem at the same end . 
						

							DEFINITY ECS Release 8.2 ATM Installation,
Upgrades, and Administration  555-233-124  Issue 1
April 2000
Troubleshooting 
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nThe ATM switc h d oes not rec og nize that a port c irc uit p ac k is in the slot. 
You may need  to re-ad minister the ATM switc h p ort b oard s. Refer to your 
ATM switc h’s q uic k referenc e g uid e for further information.
Recommended Action. 
1. Plug  in, swap , rep air, or rep lac e the fib er as nec essary.
2. Verify that the port c irc uit p ac k is c omp letely inserted .
SONET/SDH layer
Are SONET/SDH frames reaching the ATM switch?
Is the ATM switch port’s LED indicating no cell traffic?
nChec k the transmit and rec eive c ell c ount field s. Eac h field ’s values 
should  b e inc reasing  if the TN2305/TN2306 is ac tively send ing  and 
rec eiving  c ells to and from the ATM switc h.
nChec k for SONET/SDH layer alarms, LOP, LOF, LOS, and  so on.
nIf neither field  is inc reasing , the ATM switc h p ort may be d own. Verify that 
the ad min status is up .
nIf the rec eive c ell c ount is inc reasing  b ut the transmit c ell c ount is not 
inc reasing , this may b e b ec ause the p ort was ad ministered  with no UNI 
signaling. Ensure that signaling is UNI3.1.
nAlthoug h the error c ounters may not b e zero, they should  not b e larg e 
either c omp ared  with the rec eive and transmit c ell c ounters. If the 
c ounters are larg e and  inc reasing , c hec k the fib er integ rity. Make sure the 
fib er p airs are sec urely p lugg ed into b oth the TN2305/TN2306 c irc uit p ac k 
and  the ATM switc h.
nIf the fib er has b een p ulled  and  reinserted as p art of fault diag nosis, the 
nonzero loss of sig nal error c ounter may b e c orrec t.
Call processing (CaPro) Layer
Are control channels being established from the PPN to the EPN?
Diagnostics. 
nDo you g et a d ial tone on a set on the port network in q uestion?
nCan you ring  a set on the EPN d ialing  from the PPN and  vic e-versa? 
						

							DEFINITY ECS Release 8.2 ATM Installation,
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1. Type list sys-link
 and press En t e r. Screen 6-2 shows the sc reen outp ut.
Screen 6-2. System links information
Ensure that the field s have the values ind ic ated b elow.
2. On the ATM switc h c onsole, look at the switc h c irc uit. 
The VBRnrt (Variab le Bit Rate) virtual c irc uits b etween the ATM switc h PPN 
and  EPN ports are used  for sig naling between the PPN and  eac h EPN.
nThese are established once when initialized under control of DEFINITY 
Call Proc essing. They rep resent the ATM Control Link (ACL) and  
Exp ansion Arc hang el Link (EAL).
nVBRnrt virtual c irc uits are also used  for ISDN c hannels b etween DEFINITY 
p ort networks.
nOther VBRnrt virtual c irc uits may exist b etween ATM switc h p orts that are 
not assoc iated  with DEFINITY p ort networks. A c ommon use of VBRnrt 
c irc uits is multimed ia and  vid eo-c onferenc ing  systems.
Are talk paths being established between port networks?
Diagnostics. 
nCan you talk b oth ways on a set on one p ort network d ialed  from another 
port network and vice versa?
— The CBR (Constant Bit Rate) virtual c irc uits (VCs) b etween ATM 
switc h PPN p ort and  ATM switc h EPN p ort are used for talk p aths 
b etween p ort networks (PPN to EPN, EPN to PPN, or EPN to EPN).
— They are estab lished  when c alls are first setup between p ort 
networks. Eac h virtual c irc uit rep resents one p arty of a c omp lete 
multip arty talk p ath.
Link Type/ 
ChannelOne PACL to each TN2305/TN2306 in either a PPN or an 
EPN, and one EAL to eac h TN2305/TN2306 in an EPN.
 State up
list sys-link                                                                   
                                                                               
                           SYSTEM LINKS INFORMATION
Location  Link Type/    State   Current      Faulted    Last Fault
          Channel               Path         Path       Recorded
02A0101   EAL           up      present      present    12/06/1997 16:20 
01B0202   PACL          up      present      present    12/06/1997 16:17 
02A0102   PACL          up      present      present    12/06/1997 16:20  
						

							DEFINITY ECS Release 8.2 ATM Installation,
Upgrades, and Administration  555-233-124  Issue 1
April 2000
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— These virtual c irc uits may p ersist b eyond  the d uration of a p hone 
call. The DEFINITY Call Processing  software saves virtual circuits 
for a few sec ond s after the end  stations have hung  up in c ase the 
VC c an b e used  ag ain for another c all b etween the same two p ort 
networks.
— There may b e other CBR virtual c irc uits between ATM switc h p orts 
that are not assoc iated  with DEFINITY p ort networks. A c ommon 
CBR ap p lic ation is Circ uit Emulation, in whic h T-1, T-3, and  so forth 
c irc uits are c arried  over ATM.
Unusual ATM trouble conditions 
A few failure mod es in the DEFINITY ECS/ATM switc h c omb ination are 
p artic ularly d iffic ult to d iag nose. One examp le mig ht b e that you c annot make a 
completely succ essful c all even though most indications from DEFINITY ECS and 
the ATM switch look good. 
This sec tion d oc uments some hints and  c lues that may help d iag nose the 
following  failure mod es:
nIncorrectly typed or omitted EPN route or end system identifier (ATM 
switch)
nSwapped routes, end system identifiers, or fiber between a PPN and an 
EPN
Incorrectly typed or omitted EPN route or 
end system identifier (ATM switch)
Symptoms
Talk p aths are one-way, from the PPN to the EPN: you c an hear tones from the 
PPN end  station to the EPN end  station b ut not vic e versa. Bec ause the sig naling  
c hannels are b id irec tional virtual c irc uits (VCs) estab lished from the PPN to the 
EPN, these c an b e routed  c orrec tly and  c ome up  just fine. Talk p aths are two 
unid irec tional virtual c irc uits, so a sing le c all has one VC from the PPN to the EPN 
(whic h is routed  c orrec tly) and  one VC from the EPN to the PPN (whic h c annot b e 
routed ).
Diagnostics
1. At the ATM switc h, c hec k the ATM ad dresses.
2. Look for a c ause c od e 3 (No route to destination
).
Action
1. Correc t the ATM ad d ress translations in the ATM switc h. 
						

							DEFINITY ECS Release 8.2 ATM Installation,
Upgrades, and Administration  555-233-124  Issue 1
April 2000
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Swapped routes, end system identifiers, or fiber
between a PPN and an EPN
Symptoms
nAn inc orrec tly c onnec ted EPN TN2305/TN2306 c irc uit p ac k is not 
c omp letely inserted . 
nDial tone is p resent on end  stations on the PPN and  on c orrec tly 
c onnec ted  EPNs, b ut no d ial tone is p resent on the affec ted  EPN end  
stations.
nCalls c annot b e mad e b etween the PPN and  the c orrec tly c onnec ted  
EPNs b ec ause talk p aths c annot b e routed  c orrec tly.
Diagnostics
1. Chec k to see if the ATM switc h shows VBR c ontrol c hannels from the ATM 
switc h p ort intend ed for the inc orrec tly c onnec ted  EPN (b ut ac tually 
c onnec ted  log ic ally or p hysic ally to the PPN) that should  not exist.
Action
1. Correc t the ATM ad d resses (or swap  fibers) on the ATM switc h b etween 
the inc orrec tly c onnec ted  PPN and  EPN.
DEFINITY ECS ATM-CES troubleshooting
commands 
If ATM-CES is enab led (change system-parameters customer-options
), 2 
c ommand s b ec ome availab le:
nchange/display signaling-group siggrpnbr 
lets you d etermine the 
numb er of c hannels and  lets you know their slot loc ation.
nchange trunk-group trkgrpnbr 
lets you d etermine the numb er of trunks.
Troubleshooting ATM-PNC 
This sec tion d esc rib es the p roc ess for troubleshooting  the DEFINITY ECS 
ATM-PNC interfac e with the ATM switc h.
nInspecting LEDs—Desc rib es the p ossib le LED states on the
nTN2305/TN2306 ATM interfac e c irc uit p ac ks
nATM  s w i t c h
nTroubleshooting synchronization (400A only)—
nConnected through an ICSU
nConnected through a DSU/CSU