Lucent Technologies DEFINITY Communications System Generic 2.2 And Generic 3 V2 DS1/CEPT1/ISDN PRI Reference Manual

							DEFINITY Communications System Generic 2.2 and Generic 3 V2 
DS1/CEPT1/ISDN PRI Reference  
555-025-107  Issue 1
July 1993
System Administration 
Page 6-57 G2.2 Administration 
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Field 7
This field  is used  for ad ministering  one of four fac ility test c od es. For most 
installations it is d esirab le to enab le or estab lish p ermission, thus allowing  
selec ted  maintenanc e software to test the DMI-MOS/ISDN-PRI transmission 
fac ility on a d emand  b asis.
Proc ed ure 648 c ontains several tests that may b e d one on a d emand  b asis (b y 
exec uting  p roc ed ure 648) whenever fac ility test c od es 1, 2, or 3 are 
administered.
The DMI-MOS/ISDN-PRI c ommunic ation p rotoc ol c onsists of three layers or 
levels. Level 1 is the p hysic al layer. Level 2 is the d ata link layer. Level 3 is the 
network layer [also c alled  the link ac c ess p roc ed ure on the D c hannel (LAPD)] .
Field encodes and their descriptions are:
Field 8
This field  ac c ep ts enc od es from 0 to 126. However, all p oint-to-p oint 
(nonswitc hed ) links, suc h as a System 85 R2V4 or Generic  2 DMI-MOS link to a 
host c omp uter, must b e ad ministered  with enc od e 0
 (the d efault value).
Field 9
The field  ac c ep ts enc od es from 0 throug h 255, whic h c orresp ond  to 1 sec ond  
intervals for a maximum elapsed  time of 4 minutes and  15 sec ond s. The d efault 
value for this T203 timer is 30 (30 sec ond s). This timer func tions to monitor the 
fac ility data link and  sp ec ifies the maximum time allowed  without frames b eing  
exc hanged  on a d ata link layer c onnec tion.0
Disab les or p rohib its maintenanc e testing  from being done on the 
sp ec ified  (mod ule, c ab inet, c arrier, and  slot) transmission fac ility.
1
Assig ns that a level-2 test may b e exec uted  via p roc ed ure 648.
Enc ode 1 should  b e translated  for all DMI-MOS to host c omp uter links.
2
Assig ns that only the level-3 network layer may b e tested .
3
Permits b oth level-2 and  level-3 tests to b e d one.
Enc ode 3 should  b e used  for all ISDN-PRI c onnec tions that terminate on a 
4 ESS if  t h e  Ge n e r i c  2  i s  e q u i p p e d  w i t h  a n  SN 2 6 1 C  a n a l o g / d ig i t a l  f a c il it y  
test c irc uit pac k. If an SN261C is not p resent, use enc ode 1 instead .
Field s 8-12 are assig ned  the d efault values when the ANN35/TN767 c irc uit 
p ac k is assig ned  in p roc ed ure 260. 
						

							DEFINITY Communications System Generic 2.2 and Generic 3 V2 
DS1/CEPT1/ISDN PRI Reference  
555-025-107  Issue 1
July 1993
System Administration 
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Field 10
The field  ac c ep ts enc od es from 0 throug h 255, whic h c orresp ond  to 0.1 sec ond s 
per inc rement for a maximum range of 25.5 seconds. The default value for this 
T200 timer is 10 (1 sec ond ). This timer func tions to monitor multip le frame 
op eration on the d ata link layer.
Field 11
This field  d efines a value for the N200 c ounter. The value d etermines the 
maximum numb er of frame retransmissions. Permitted  are 1 to 10, with 3 b eing  
the d efault value.
Field 12
This field  d efines a value for the K c ounter. The value d etermines the maximum 
numb er of outstand ing  or unac knowled ged  information I frames. Permitted  
values are 1 to 10, with 7 b eing  the d efault value.
Ad ministration values for these p roc ed ure 262 timers and  c ounters must b e 
c oordinated  with the other terminating  end . 
						

							DEFINITY Communications System Generic 2.2 and Generic 3 V2 
DS1/CEPT1/ISDN PRI Reference  
555-025-107  Issue 1
July 1993
System Administration 
Page 6-59 G2.2 Administration 
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Field 13
NFAS-PRI only. Use to sp ec ify NFAS arrang ements (p op ulate the ISDN interfac e 
ID within the c hannel ID IE). This information must matc h exac tly on eac h end  of 
the fac ility and  the enc od e must c ome from the p remise switc h (as d esc rib ed  in 
Tec hnic al Pub lic ation 41459). Field  enc od es and  their d esc rip tions are:
Procedure 262 Word 2: ISDN-PRI 
D-Channel Backup
This p roc ed ure is c urrently only ap p lic ab le for c ertain ISDN-PRI c onnec tions. 
Sp ec ific ally, those B-c hannel g roup s that use NFAS. Eac h of these group s is 
id entified  b y a uniq ue numb er known as the D-Channel g roup  numb er. For 
NFAS, field s 2 throug h 5 d efine the D-c hannel for a signaling  g roup .
Field 1
Identifies a p artic ular D-c hannel g roup  numb er. The rang e of enc od es is 1 
throug h 255.
ISDN trunks are assig ned  to a sp ec ific  equip ment loc ation in p roc ed ure 116. 
Proc ed ure 116 is also used  to assig n ISDN-PRI c irc uits to the D-Channel g roup  
numbers.
Fields 2-5
Assig ns a p artic ular c irc uit p ac k as p rovid ing  the p rimary D-c hannel for the 
id entified  D-c hannel g roup  numb er. Tab le 6-4
 depicts the permitted equipment 
rang es.
The ISDN-PRI fac ility (slot) that is translated  as the primary must have also b een 
translated  for (23B +  1D) sig naling , p roc ed ure 260, field  7, must use enc od e 0
. –
(Dash) The only value for non-NFAS arrang ements.
Any numb er within the rang e of (0 throug h 31) for NFAS 
arrang ements. 
						

							DEFINITY Communications System Generic 2.2 and Generic 3 V2 
DS1/CEPT1/ISDN PRI Reference  
555-025-107  Issue 1
July 1993
System Administration 
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Fields 6-9
Assig ns a p artic ular c irc uit p ac k as p rovid ing  the b ac kup  D-Channel (whic h is 
op tional) for the id entified  D-Channel Group  Numb er. Tab le 6-4
 depicts the 
p ermitted  eq uip ment rang es.
A p rime ob jec tive for the d esig n of eac h D-c hannel g roup  is to have memb ers 
from two or more mod ules. By ac c ommod ating  this objec tive, it is hig hly 
rec ommend ed  that the Bac kup  D-Channel eq uipment loc ation be a d ifferent 
mod ule from that selec ted  as the Primary D-Channel. The ISDN-PRI fac ility (slot) 
that is translated  as the b ac kup  must b e translated  for (23B +  1D) sig naling , 
p roc ed ure 260, field  7, must have enc od e (0
).
Procedure 262 Word 3: ISDN-PRI 
Codeset Map Assignments
Dep end ing  on the terminating  switc h it may b e nec essary to administer a 
Cod eset Map  Assig nment and  c onvert from one c od eset or c od ep oint to a 
d ifferent c od eset or c od ep oint. This ad ministration assig nment is req uired  for 
ISDN-PRI links orig inating  on a Generic  2 and  terminating  on a System 85 R2V4.
Fields 1-4
Assig ns a p artic ular eq uipment loc ation/c irc uit p ac k to b e g iven a c od eset map  
number. Ta b l e  6 - 4
 depicts the permitted equipment ranges.
Field 5
Assig ns whether the c irc uit p ac k is BRI or PRI. d ash (–) is ap p rop riate for 
ISDN-PRI.
Field 6
Assig ns a c od eset map  numb er. The p ermitted  rang e is (0 throug h 15). Numb er 
selec tion is arb itrary, however; a sug g estion is start with 0 and  selec t hig her 
numb ers as need ed .
When Cod eset map  numb ers are translated  they are assig ned on a D-Channel 
Group  numb er b asis. All ISDN-PRI c irc uits within a D-Channel Group  must b e 
ad ministered  with the same Cod eset Map Numb er.
Field 7
Assig ns whether hyp erac tivity management will b e enab led  for the ISDN-PRI link. 
Hyp erac tivity is d efined  as erratic  b ehavior b y the D-sig naling  c hannel. Typ ic ally, 
a hyp erac tive link will g enerate an exc essive amount of meaning less traffic . 
Exc essive D-c hannel traffic  may overload  the mod ule p roc essor and  d egrade 
system p erformanc e. 
						

							DEFINITY Communications System Generic 2.2 and Generic 3 V2 
DS1/CEPT1/ISDN PRI Reference  
555-025-107  Issue 1
July 1993
System Administration 
Page 6-61 G2.2 Administration 
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Field encodes and their descriptions are:
Procedure 280 Word 1: ISDN-PRI
Receive/Transmit Codeset Mapping
This p roc ed ure is used  to translate Cod eset Map ping  p arameters. Bec ause 
switc hes sometimes d iffer in the c od esets in whic h c ertain ISDN IEs are sent and 
also in the values of the op c od es of those IE, Generic  2 has the c ap ab ility to map  
the c od esets and  op c od es to ac c ommod ate these d ifferent imp lementations 
ac ross systems. For examp le, System 85 R2V4 imp lements the TCM IE in 
c od eset 7 whereas Generic  2 imp lements it in c od eset 6 b y d efault. If Generic  2 
must pass TCMs to or from a System R2V4, it must map  the TCM IE from c odeset 
6  t o  c o d e s e t  7 .  Wh e n  c o n n e c t e d  t o  a  4 ESS,  t h is  m a p p i n g  i s n e c e ss a r y o n ly  i f  a n  
R2V4 is p resent in an all-ISDN SDN network. Also note that the op c ode value of 
the TCM IE and  d isp lay d oes not need  to b e mapp ed  to a d ifferent value.
Cod eset map p ing is imp lemented  here as follows:
1. In field  1, assig n an ind ex in the rang e 0 to 15
2. In field  2, selec t Incoming
3. In field  3, selec t a c odeset to b e map ped  in the inc oming  d irec tion
4. In field  4, selec t an opc od e (IE) b elong ing  to the selec ted  c od eset
5. In field  5, selec t the c od eset on the Generic  2 to whic h the inc oming  
c od eset from field  3 is to be mapp ed
6. In field  6, selec t the op c od e on the Generic  2 to whic h the inc oming  
op c od e from field  4 is to b e map ped
7. Step s 2 throug h 6 c an be rep eated  up  to 256 times for the inc oming  c ase.
8. When Outgoing
 is selec ted  in field  2, rep eat step s 3 throug h 7. For every 
inc oming  map ping  there should  b e an identic al outg oing  map p ing .
9. All of the ab ove step s c an b e rep eated  up  to 16 times (the numb er of map  
numb ers availab le). –
(Dash) not applic able. This would be administered for all ISDN-BRI links.
0
Disab les hyp erac tivity manag ement for the p artic ular ISDN-PRI link (this 
is the rec ommend ed  op tion for SNC links).
1
Enab les hyp erac tivity manag ement (rec ommended  for all ISDN-PRI links 
exc ep t SNC links). This software (hyp erac tivity manag ement) func tions to 
monitor link performanc e, d etec t when c ertain error threshold s have been 
exc eed ed , b usyout the link on exc eed ing  the threshold , and  rec ord  the 
failure reason as FAULT CODE 337 in the maintenanc e log . 
						

							DEFINITY Communications System Generic 2.2 and Generic 3 V2 
DS1/CEPT1/ISDN PRI Reference  
555-025-107  Issue 1
July 1993
System Administration 
Page 6-62 G2.2 Administration 
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10. For eac h ANN35 or TN767 c ontaining a p rimary D-c hannel to whic h you 
want c od eset map p ing , assig n the map  numb ers in p roc ed ure 262, word  
3.
Different interfac es c an have d ifferent map  numb ers assig ned . For 
examp le, one interfac e c an map  the TCM to c od eset 7 while another 
interfac e c an map  the TCM to c od eset 0.
Tab le 6-3
 summarizes the c urrent c od eset map p ing  req uirements for Generic  2:
Field 1
Assig ns a c od eset map  numb er (suc h as d efined  in p roc ed ure 262, word  3). 
Field encodes and their descriptions are:
Dash (–), which disables codeset mapping.
Any numb er b etween 0 and  15 that is p reviously d efined with p roc ed ure 262, 
word  3.
Field 2
Sp ec ifies whether c od eset map p ing  is for inc oming  messag es or outg oing  
messag es. Field  enc od es and  their desc rip tions are:
From a Generic  2 p ersp ec tive, inc oming  means mapp ed  from Cod eset 6 to 
Codeset 7. While outgoing means Codeset 6 is mapped to Codeset 7. Two-way 
trunk g roup s will normally have a Cod eset Map  translated  for b oth inc oming  and  
outg oing .
Table 6-3. Codeset Mapping Requirements
IE Codeset Map Opcode Map When Required
TCM Map  from c od eset 6 to 
c od eset 7 outg oing . 
Map from codeset 7 to 
codeset 6 incoming.Map from op c od e 
8 to op c od e 8 in 
both directions.If a System 85 R2V4 is 
p resent in an end -to-end 
ISDN network with Generic  
2, this codeset mapping is 
req uired .
Disp lay Map  from c od eset 6 to 
c od eset 7 outg oing . 
Map from codeset 7 to 
codeset 6 incoming.Map from op c od e 
40 to op c ode 40 in 
both directions.If a System 85 R2V4 is 
p resent in an end -to-end 
ISDN network with a 
Generic  2, this c od eset 
mapping is required.
0
Assigns mapping for incoming messages.
1
Assig ns map p ing  for outg oing  messag es. 
						

							DEFINITY Communications System Generic 2.2 and Generic 3 V2 
DS1/CEPT1/ISDN PRI Reference  
555-025-107  Issue 1
July 1993
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Field 3
Sp ec ifies a map p ed  from c od eset numb er. Permitted  enc od es are 0 to 7. These 
numb ers c orresp ond  to the resp ec tive c od esets on a numb er-p er-number b asis.
Currently, c od eset 1 throug h c od eset 5 are reserved  for future use. Thus, only 
enc odes 6 and  7 are app lic ab le for the c od eset fields.
If field  2 is translated  (0
) for inc oming  then enc od e (7
) is ap p rop riate for field  3.
If field  2 is translated  (1
) for outgoing then enc od e (6
) is appropriate for field 3.
Field 4
Identifies the IE code to be mapped from. Field encodes and their descriptions 
are:
Tab le 6-4
 identifies c urrent IE d ifferenc es b etween c od eset 6 and  c od eset 7.
number
Any numb er within the rang e of (0 throug h 127).
Field 5
Sp ec ifies a map p ed -to c od eset number. Permitted  enc od es are numb ers within 
the rang e (0 through 7) These numb ers c orresp ond  to the resp ec tive c odesets 
on a number-p er-numb er b asis.
If field  2 is translated  one for inc oming , then enc od e seven is ap p rop riate for field  
5.–
(Dash) is available b ut not rec ommend ed. If a d ash were translated , all 
IEs would  b e map p ed  from one c od eset to the other c odeset on a 
one-to-one b asis. Bec ause some c od eset 7 IEs are d ifferent from their 
numeric al eq uivalent in c od eset 6, it is g enerally NOT d esirab le to map  
on a one-to-one b asis.
Tab le 6-4. Cod eset Differenc es
IE Name Codeset 6 Codeset 7
Traveling  Class Mark 8 8
Log ic al Link Id entific ation 26 4
Disp lay 40 40
Pac ket Layer Parameters 62 2
Link Layer Parameters 64 1 
						

							DEFINITY Communications System Generic 2.2 and Generic 3 V2 
DS1/CEPT1/ISDN PRI Reference  
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Field 6
Identifies the IE c od e to b e map p ed  to. Permitted  enc od es are the same as 
field 4.
Field 7
Eac h c od e set map  numb er may c ontain up to a maximum of 255 inc oming  and  
255 outg oing  map p ings. This d isp lay-only field  shows the numb er of map p ing s 
that remain (the numb er of unassig ned  map p ings).
Procedure 354 Word 3: NPA-NXX 
Digits Assignment
This word  and  p roc ed ure are used  to ad minister the ISDN numb ering p lan. 
Dep end ing  on the switc h c onfiguration, there may b e more than one ISDN 
numb ering  p lan. Contents of these field s make up  a p art of the station 
identification number (SID). The SID is transmitted in the calling number IE (part 
of the setup  messag e) or c onnec t p arty number (p art of the c onnec t messag e).
This word  need  not b e translated  unless the ap p lic ation req uires that SID or the 
c onnec ted  numb er b e transmitted  to the network. If the SID is to b e p assed  
throug h the ISDN network, then it must also b e administered  here and  in 
p roc ed ure 000, word  4.
Field 1
This field  should  b e translated  for b oth p rivate and  p ub lic  network c onnec tions. 
The NPA-NXX d esig nator is a 2-d ig it field  and  within the rang e of 1 throug h 99.
Field 2
This 3-d ig it field  should  c ontain the Numb ering  Plan Area (NPA), whic h is also 
c alled  the area c od e. The NPA is the area c ode in whic h the switc h resid es. 
Assig nment is therefore d ep end ent on the p artic ular loc ation and  ap p lic ation.
Field 3
This 3-d ig it field  should  sp ec ify the NXX, whic h is also c alled the offic e c ode of 
the loc al exc hang e c omp any. Permitted  values must b e those numb ers within the 
rang e of 200 throug h 999 and  must b e the offic e c od e of the loc al exc hang e.
Field 4
This 1-d ig it field  spec ifies the thousands d ig it. When not used , it should  c ontain 
(–). When used , d ig its 0 throug h 9 may b e assig ned . Use this field  only with 
three-d ig it d ial p lans. Do not use it with four- or five-d ig it d ial p lans. 
						

							DEFINITY Communications System Generic 2.2 and Generic 3 V2 
DS1/CEPT1/ISDN PRI Reference  
555-025-107  Issue 1
July 1993
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Procedure 000 Word 3: Line-Side 
BCCOS Designator
This p roc ed ure assig ns a BCCOS in field  5 to the extension shown in field 1. One 
imp lic ation of this COS is the pattern or p referenc e selec ted  for this extension on 
outg oing  c alls (see the Proc ed ure 309 Word  5 and  Proc ed ure 321 Word  5 
sec tions later in this c hap ter).
The 10 BCs are d efined  in field  16 of p roc ed ure 014, word  1. This definition 
c od es the BC information element (IE) in the setup  messag e when the extension 
(that is, the extension in field  1 of p roc edure 000, word 3) ac c esses an ISDN-PRI 
trunk for an outgoing c all.
Procedure 000 Word 4:  NPA-NXX 
Index Designator
Dep end ing  on how the switc h is used , p roc ed ure 000, word  4, may or may not 
b e translated . Sp ec ific ally, word  4, field  4, is used  for partitioning , ISDN, or both, 
and  must b e translated  when:
1. The switc h transmits SID or c onnec ted  number to the network
2. The switc h p rovid es uniq ue extension numb er p artitions
Field  4 of p roc ed ure 000, word  4, need not be translated  when: the switc h d oes 
not transmit SID or c onnec ted  number to the network (p ub lic  or p rivate).
If the switc h c ontains more than one offic e c od e, multip le NPA/NNX d esig nators 
may b e need ed .
Field 1
Assig ns a single extension numb er or the first extension numb er for a b loc k of 
numbers. The single number or block of numbers will be unique in terms that 
they relate to a sing le extension p artition id entific ation.
Field 2
Assig ns the last extension numb er for a b loc k of numb ers.
Field 3
Assig ns the extension p artition id entific ation for the tenant servic es feature. This 
numb er assoc iates the sing le or b loc k of extension numb ers to a partic ular ISDN 
fac ility (NPA-NXX Desig nator). 
						

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Field 4
Assoc iates an NPA-NXX Desig nator with the previously d efined  extension.
Procedure 210 Word 2: LDN, NPA, 
and NNX Attendant Partition Assignments
This p roc ed ure is used  to c onfig ure the attendant c onsoles into g roup s known as 
attendant p artitions. Also, LDN and  NPA-NXX assig nments are c omp leted , thus 
relating  these assig nments to a p artic ular attendant c onsole or attend ant 
p artition.
Field 1
Translates a c onsole numb er. Permitted enc od es are any 2-d ig it numb er within 
the rang e of 1 throug h 40.
This c onsole must b e p reviously assig ned  in p roc ed ure 210, word  1.
Field 2
Assig ns the attend ant p artition numb er. Permitted  enc od es are any unused  
numb er within the rang e of 0-40.
Field 3
Assig ns the one c onsole in the attend ant p artition that will b e the c ontrolling 
c onsole. All other memb ers of this g roup  must have c ontrol d enied . Field  
enc odes and  their d esc rip tions are:
Field 4
Assig ns or assoc iate the LDN with a p artic ular c onsole or c onsole p artition. The 
numb er is d ep end ent on the switc h or p rivate network numb ering plan.
Field 5
Assig ns or assoc iate the NPA-NNX d esig nator with the c onsole or c onsole 
p artition. The enc od e must b e the same as that d efined  in p roc ed ure 354, 
word 3.0
For all b ut the c ontrolling c onsole
1
Only for the c ontrolling  c onsole