Lucent Technologies Definity Audix System Digital Networking Guide

							DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
Introduction to Digital Networking 
1-9 Example of a Basic Network 
1
Figure 1-1. Three-Machine Basic Network Example
Before the mac hines c an exc hang e messag es, eac h mac hine must c ontain 
some information ab out the other mac hine. The following  list desc rib es the b asic  
information req uired  b y eac h mac hine.
Mac hine Name The name given to the loc al and remote mac hines.  Eac h 
mac hine has a unique name.  The mac hine name is used  
when initiating  c ommunic ations and  inc reases the sec urity 
of the system.
Mac hine Typ e Either aud ix for DEFINITY AUDIX or Intuity AUDIX or r1aud  
for AUDIX R1
Loc ation The loc ation is loc al or remote.
Extension Leng th The extension leng th of the remote mac hine.
Prefixes:
Subscribers:Prefixes:
Subscribers:
Prefixes:
Subscribers: DenverColumbus
New Jersey 37 (DR)
303555
1000
299922 (CB)
614555
3000
4999
65 (NJ)
908555
5000
6999 
						

							DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
Introduction to Digital Networking 
1-10 Example of a Basic Network 
1
The following tab le c ontains the information entered  for eac h mac hine in the 
three-machine example. Prefix The c od e used  to id entify the remote mac hine.  Part of the 
overall ad d ressing  sc heme, the p refix is entered  b y loc al 
subscribers when they address messages to remote 
sub sc rib ers.  Sub sc rib ers first enter the p refix then the 
remote sub sc rib er extension.  Prefixes may b e req uired  if 
the ranges overlap.  You do not have to use prefixes.
For examp le, for a mac hine named  “ Denver,”  the p refix 
c ould  b e “ DR.”  To ad d ress mail to a remote sub sc rib er on 
the Denver mac hine, local subscribers enter “DR”  
(touc h-tones 3 and  7) on the touc h-tone keyp ad  and  then 
the remote sub sc rib er’s extension. For extension 2600 in 
Denver, the local subsc riber enters            .
Eac h remote mac hine c an have a maximum of 10 p refixes if 
you wanted  to use more than one p refix. For examp le, if you 
wanted  to b e able to ad d ress voic e messag es b y using a 
more familiar p refix, suc h as an area c od e or exc hang e, you 
could set up multiple prefixes. In the Denver example, you 
c ould  set up  303, the area c od e, and  555, the exc hang e, as 
p refixes. By setting  up  multip le p refixes, loc al subscribers 
c an use c omplete telep hone numb ers to ad d ress voic e 
messag es.
Add ress Rang e The p refix, the starting  (or lowest) extension, and  the end ing  
(or hig hest) extension assig ned  to a remote sub sc rib er. 
When a loc al sub sc rib er rec ord s a messag e and  enters the 
address, DEFINITY AUDIX digital networking checks the 
ad d ress with the d atab ase ad d ress rang es to d etermine 
whic h mac hine may c ontain the sub sc rib er. A maximum of 
16 mac hines may share an ad d ress rang e. Rememb er, an 
ad d ress rang e d oes not always uniq uely identify a mac hine.
Dial String The telep hone numb er of the remote mac hine used  to 
initiate c alls to a remote mac hine.
Data Rate The d ata rate of the networking c onnec tion b etween two 
AUDIX systems.
Messag e 
Transmission 
Sc h e d u leThe rang e of times and  intervals when the loc al mac hine 
attemp ts to d eliver voic e messag es to remote mac hines.
372600 
						

							DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
Introduction to Digital Networking 
1-11 Example of a Basic Network 
1
Sending a Message to an Administered
Remote Subscriber
Onc e the network ad ministration is finished , sub sc rib ers c an exc hang e voic e 
mail. The following examp le uses a loc al sub sc rib er at extension 2000 on 
mac hine DR who wants to send  a messag e to the ad ministered  remote 
sub sc rib er at extension 6000 in New Jersey. All the user need s to d o is enter the 
remote subsc rib er’s ad d ress. DEFINITY AUDIX d ig ital networking performs the 
p roc esses d esc ribed  in the examp le in a matter of sec ond s. The user d oes not 
know that any of the p roc esses are oc c urring .
1. The local sub sc rib er record s a messag e and  ad d resses the messag e to 
an ad ministered  remote sub sc rib er at extension “ 656000”  (“ NJ6000” ).
2. The loc al mac hine c hec ks to see if “ 656000”  is a loc al sub sc rib er and  
returns an answer of “ no.”
3. The loc al mac hine c hec ks the d atab ase to see if “ 656000”  falls within a 
valid  ad d ress rang e on any of the administered  remote mac hines. The 
loc al mac hine find s that the ad d ress is valid  on a mac hine named NJ.
4. Using  the ad d ress and  the mac hine information, the loc al mac hine c hec ks 
the remote subsc riber d atab ase on the loc al mac hine for any information 
on a sub sc rib er at ad d ress “ 656000.”  The loc al mac hine disc overs 
information on an ad ministered  remote sub sc rib er for the ad d ress and  
sp eaks the name, if rec ord ed , of the remote sub sc rib er.
5. The loc al mac hine sc hed ules and  delivers the messag e d uring the next 
valid  send  time.
Table 1-1. Example Information for a Three-Machine Network
Machine Name DR CB NJ
Mac hine Typ e DEFINITY AUDIX AUDIX R1 Intuity
Mac hine Loc ation Denver Columb us Linc roft
Extension Leng th 4 4 4
Prefixes DR (37) CB (22) NJ (65)
614555 303555 908555
Ad d ress Rang es 1000-2999 3000-4999 5000-6999
Mac hine Dial String 13035551000 16145553000 19085555000
Messag e Transmission 
Sc h e d u le24hrs/d ay
every 5 minutes24hrs/d ay
every 5 minutes24hrs/d ay
every 5 minutes
Sub sc rib ers 1500 4000 6000 
						

							DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
Introduction to Digital Networking 
1-12 Example of a Basic Network 
1
Sending a Message to a Non-Administered
Remote Subscriber
DEFINITY AUDIX d ig ital networking  easily hand les the p roc ess of send ing  voic e 
mail to no-profile, non-ad ministered  remote sub sc rib ers when an ad d ress falls 
within a rang e that c orresp ond s to one or more mac hines. The following  examp le 
uses extension 223500 as a no-p rofile, non-administered  remote sub sc rib er.
1. The loc al sub sc rib er in Denver rec ord s a messag e and  ad d resses the 
messag e to a remote sub sc rib er at “ 223500”  (“ CB3500” ). The loc al 
mac hine has never exc hang ed  voic e messag es with a remote sub sc rib er 
at “ 223500.”  At this p oint, the remote sub sc rib er is c onsid ered  a 
no-p rofile, non-ad ministered remote sub sc rib er.
2. The loc al mac hine c hec ks to see if “ 223500”  is a loc al sub sc rib er and  
returns an answer of “ no.”
3. The loc al mac hine c hec ks the d atab ase to see if “ 223500”  falls within a 
valid  ad d ress rang e. The ad d ress is valid  and  the loc al mac hine uses the 
d atab ase to d etermine whic h mac hines c orresp ond  to that ad d ress. One 
mac hine, CB, c orresp onds to the ad d ress. At this p oint, the remote 
sub sc rib er is c onsid ered  a non-verified , non-ad ministered  remote 
sub sc rib er. A p rofile has b een c reated  in the d atab ase for the remote 
sub sc rib er.
4. Using  the ad dress and  the information ob tained  in the p revious step , the 
loc al mac hine c hec ks the remote sub sc rib er d atab ase on the loc al 
mac hine for any information on a sub sc rib er at ad d ress “ 223500.”  The 
mac hine d oes not find any information.
5. The loc al mac hine attemp ts to deliver the messag e to mac hine CB d uring 
the next valid  send time, using  the ad d ress information.
6. CB ac c ep ts and  d elivers the messag e to the sub sc rib er at extension 
3500.
7. After suc c essfully sending  the messag e, the loc al mac hine c reates a 
rec ord  for the remote sub sc rib er that c ontains that remote sub sc riber’s 
extension and  mac hine name. At this p oint, the remote sub sc rib er is 
c onsid ered a verified , non-ad ministered  remote sub sc riber.
The loc al mac hine now knows the verified , non-ad ministered  remote sub sc rib er 
exists and  knows the sub sc rib er’s mac hine name and  extension. The next time a 
messag e is ad d ressed  to the remote sub sc rib er at extension 3500 on mac hine 
CB, the loc al mac hine sends the message d irec tly to CB; b ec ause the loc al 
mac hine has a rec ord  of a suc c essful d elivery for the remote sub sc rib er. 
						

							DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
Introduction to Digital Networking 
1-13 Digital Networking Feature Overview 
1
Digital Networking Feature Overview
You should be familiar with the following digital networking features:
nRemote Up d ates
nNetwork Turnaround
nSc heduling
nRetry Strateg ies
nAd ministration Log
Remote Updates
The DEFINITY AUDIX system offers an automatic  method  of ad ministering  
remote sub sc rib ers c alled  
remote upd ates. Remote upd ates allow the loc al 
DEFINITY AUDIX system to exc hang e sub sc rib er information with eac h 
DEFINITY AUDIX, Intuity, and AUDIX R1V5 or later remote system ad ministered 
on the loc al system.
During  a c omp lete up d ate, all sub sc rib er information is exc hang ed  b etween 
systems. For examp le, when a new system is ad d ed  to the network, eac h 
existing  system should  req uest a c omp lete up d ate from the new system to ad d 
the new subsc rib ers to the network. Comp lete up d ates may involve many 
thousand s of users and  req uire heavy system resourc es. Ad d itionally, the loc al 
DEFINITY AUDIX system c an automatic ally sc hed ule a non-p rime-time c omp lete 
up d ate from a remote system if the loc al system find s d isc repanc ies b etween 
databases. 
Partial up d ates oc c ur on a reg ular b asis, suc h as weekly or nig htly, to ad d  or 
change information for subscribers. Partial updates would occur, for example, 
when a new sub sc rib er is ad d ed  to a remote or loc al system. If all systems in the 
network are ad ministered  to allow p artial up d ates, any time a sub sc rib er is 
ad d ed  to, d eleted  from, or c hang ed on a system, that system will notify eac h 
system in the network of the c hang e.
Refer to Chap ter 10, ‘‘Ong oing  Ad ministration’’
, for c omplete information on the 
Remote Up d ates feature.
Network Turnaround
The network turnaround feature allows one system to c all another and  exc hang e 
voic e messag es, send  up d ated  sub sc rib er information, and  req uest upd ated  
sub sc rib er information. When the system that originated  the c all finishes, network 
turnaround  allows the c alled  system to perform the same ac tions using  the same 
c onnec tion. The feature red uc es toll c harg es and  inc reases the effic ienc y of the 
system. It is g enerally rec ommend ed  that you use network turnaround . 
						

							DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
Introduction to Digital Networking 
1-14 Digital Networking Feature Overview 
1
Scheduling
Messag es are d elivered  to a remote system on a sc hed ule set up  on the loc al 
system for eac h remote system. The sc hed ule inc lud es the start and  end  time 
d uring the d ay when messag es will b e transmitted  to the remote system and  the 
interval for transmitting  messag es. The minimum interval is every five minutes.
If the c onnec tion to the remote system fails or p roc essing  req uests fail, the 
system d rop s the c all and  retries again, d ep ending  on the failure reason. The 
numb er of retries dep end s on the following :
nReq uest typ e
nFailure reason
nResc hed uling  c ount (System Parameters Features sc reen)
If the req uest is for a test (Test Mac hine sc reen), the loc al DEFINITY AUDIX 
system only tries onc e to make the c onnec tion.
If the req uest is not for a test and  the failure reason is one of the following,
nReceive busy tone
nRec eive interc ep t tone (while d ialing  the p ort)
nRec eive reord er tone
nDialing  timeout
nRec eive disc onnec t from the far end while d ialing  or proc essing
the loc al DEFINITY AUDIX system retries three more times with a one-minute in ter v al 
b etween eac h c all. If the fourth attemp t (or the first if this is a test c all) still fails, 
then a DEFINITY AUDIX aud it (whic h takes p lac e within at most the next eig ht 
minutes) resc hed ules all req uests to the remote system for sub seq uent 
transmission b ased on the transmission sc hed ule for that system (remote 
Mac hine Profile sc reen).
Administration Request
If the Up d ate Out field  on the remote Mac hine Profile sc reen is set to yes, and  
there is a c hang e to send  to remote system, the loc al DEFINITY AUDIX system 
retries over and over until the remote system g ets the up d ate or the Up d ate Out 
field  is set to no.
Voice Mail Request
After one d ay of retries, the resc hed uling  c ount for all the messages b eing  sent to 
the remote system is inc remented  b y 1 (at most the resc hed uling  c ount c an b e 
10, then the loc al DEFINITY AUDIX system will retry for ten d ays). When the 
resc hed uling  c ount maximum is reac hed , then all the messag es b ec ome 
undeliverable. 
						

							DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
Introduction to Digital Networking 
1-15 Digital Networking Feature Overview 
1
Status Request
The DEFINITY AUDIX system retries over and  over ag ain.
Administration Log
Prob lems that req uire the system ad ministrator’s attention ap p ear in the 
ad ministration log . These ad ministration errors (suc h as notific ation of full 
mailb oxes and  nond eliverab le messag es) should  b e c orrec ted  to op timize 
networking operation. 
The system d isp lays an alarm messag e (alarms: A
) on the DEFINITY AUDIX 
ad ministration sc reen status line when it log s ad ministration errors. Use display 
administration log
 to d isp lay ad ministration errors. The DEFINITY AUDIX system 
ad ministrator should  c hec k the ad ministration log  eac h morning . You c an c orrec t 
sub sc rib er p rob lems id entified  on the ad ministration log  using  reg ular 
ad ministrative p roc ed ures (suc h as notifying  a sub sc rib er of an und eliverab le 
messag e).
The ad ministration alarm on the status line is c leared  when you ac c ess the 
ad ministration log . 
						

							DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
Introduction to Digital Networking 
1-16 Digital Networking Feature Overview 
1 
						

							DEFINITY AUDIX Digital Networking Considerations 
2-1  
2
DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
2
DEFINITY AUDIX Digital 
Networking Considerations
DEFINITY AUDIX d ig ital networking  allows loc al DEFINITY AUDIX sub sc rib ers to 
exc hang e voic e messag es with other DEFINITY AUDIX systems, INTUITY AUDIX 
systems, and  AUDIX R1 systems (AUDIX systems). These systems can b e 
loc ated  on the same site or sp read out over several loc ations in the same or 
different c ities and  c ountries.
A DEFINITY AUDIX system may c onnec t with a maximum of up  to 100 other voic e mail 
systems (digital networking  and  AMIS) and  su p p o r t a  max i mum  of 1 00,0 00  loc al 
sub sc rib ers and  administered  and  nonad ministered  remote sub sc rib ers.
However, the total numb er of networked  systems and  loc al and  remote 
sub sc rib ers dep end s on several fac tors, suc h as:
nThe numb er of networking  p orts
nThe amount of availab le storag e for remote sub sc riber d ata
nThe speed  of d ata transp ort b etween systems
‘‘Disk Sizing  for Loc al and  Remote Sub sc ribers’’
 d escrib es how the size of the 
hard  d isk d etermines the numb er of p ossib le loc al and  remote sub sc rib ers.
In ad dition, reg ardless of d isk size, a DEFINITY AUDIX with one d ig ital 
networking  p ort with low-speed  c onnec tivity should  b e limited  to a network with 
10 other voic e mail systems and  will supp ort only 100 loc al or 10,000 remote 
sub sc rib ers. 
						

							DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
DEFINITY AUDIX Digital Networking Considerations 
2-2 Number of Networking Ports 
2
Number of Networking Ports
DEFINITY AUDIX Release 3.2 sup p orts a maximum of 2 d ig ital networking  
c hannels. DEFINITY AUDIX Release 4.0 sup p orts 1 d ig ital networking  c hannel.
The DEFINITY AUDIX system works by emulating  a switc h station p ort c irc uit 
p ac k. In all switc hes, the DEFINITY AUDIX system c an emulate a TN754, 8-p ort 
d ig ital station c irc uit p ac k. In G3V2, and  later switc h releases, the DEFINITY 
AUDIX system c an emulate a TN2181, 16-p ort d ig ital station c irc uit p ac k. The 
DEFINITY ProLog ix switc h c an sup p ort either the TN754 or TN2181 emulation. 
The TN754 and  TN2181 are the only c irc uit p ac k emulations that c an be used  
with d ig ital networking . TN746 emulation is not an option with d ig ital networking . 
For a c omp lete d esc rip tion of c irc uit p ac k emulations for the DEFINITY AUDIX 
System, see 
Switc h Administration for the DEFINITY AUDIX System, 
585-300-509, or 
Installation and  Switc h Ad ministration for the DEFINITY AUDIX 
System Release 4.0,
 555-300-122.
Tab le 2-1
 summarizes the DEFINITY AUDIX network and  voic e p ort c ap ac ity by 
DEFINITY AUDIX c irc uit-p ac k typ e, and  c irc uit p ac k emulation when a system 
has d igital networking .
Disk Sizing for Local and Remote 
Subscribers
The numb er of loc al and  remote sub sc rib ers sup p orted  b y the DEFINITY AUDIX 
system d ep end s, among other c onsid erations, on the d isk size. Remote 
sub sc rib ers inc lud e b oth d ig itally networked and  AMIS analog  sub sc rib ers. The 
numb er of hours of voic e storag e that need s to b e p urc hased  d epend s on the 
numb er of voic ed names, messag es, and  g reeting s. Either a 40-hour d isk or a 
100-hour d isk is p rovid ed  with a Release 3.2. Release 4.0 p rovid es only a 
100-hour d isk. The following  table d esc rib es the maximum numb er of loc al and  
remote sub sc rib ers b y d isk size. The numb er of networking  p orts and the sp eed  
of d ata transp ort may dec rease these numb ers.
Table 2-1. Voice Port Limits with Digital Networking by Circuit Pack Emulation
Maximum Number of Ports with Digital Networking
Switch Circuit Pack 
EmulationTN566B MFB TN567 MFB TN568
Voice Network Voice Network Voice Network
TN2181 (16 Port DCP)  10  2 16 2 8 1
TN754 (8 Port DCP)  8 2 8 2 8 1