Lucent Technologies Definity Audix System Administration Guide

							DEFINITY AUDIX System Administration  585-300-507  Issue 7
May 1999
Ongoing Preventive Maintenance 
4-3 Weekly Preventive Maintenance Tasks 
4
Weekly Preventive Maintenance Tasks
Perform the following  p reventive maintenanc e tasks eac h week: 
1. Back up appropriate data on a removable tape or MO disk. 
The c ritic al filesystems are b ac ked  up  automatic ally eac h nig ht or eac h 
week. Normally, you will not have to bac k up  any extra d ata. Refer to 
Chapter 6, ‘‘Ong oing  Data Ad ministration’’, und er ‘‘Bac king  Up  
Filesystems and Sub d irectories’’, for information ab out b ac kup  
suggestions for individual filesystems. 
2. Release 3.2 and earlier releases use a removable tape for the backup 
med ium. When a removab le tap e is full, the DEFINITY AUDIX system 
rewind s to the beg inning of the tape, and  d oes the ind ic ated  b ac kup (s), 
removing  
all p revious b ac kup s. To p revent all p revious b ac kup s from 
b eing  d eleted , you may want to swap  out this tap e with a new one b efore it 
fills up. Refer to Chapter 6, ‘‘Ong oing  Data Ad ministration’’ for instruc tions 
on replacing the removable tape when it becomes necessary.
Release 4.0 uses an MO d isk for the b ac kup med ium. This MO d isk c an 
also b ec ome full. However, when the d isk is full the DEFINITY AUDIX 
system attemp ts to reuse sp ac e from the old est b ac kup  of the same typ e 
as the one b eing  p erformed . It always leaves at least one b ac kup  of the 
same typ e on the MO d isk. If it c annot overwrite the same typ e of b ac kup , 
it rep orts an alarm. In this c ase you will need  to rep lac e the MO d isk. Refer 
to Chap ter 6, ‘‘Ong oing  Data Ad ministration’’ for instruc tions on rep lac ing  
the MO d isk.
3. If your DEFINITY AUDIX system is new or if you have rec ently ad d ed  a 
numb er of sub sc rib ers, monitor DEFINITY AUDIX port usag e and  c ap ac ity 
to d etermine if your system is p rovid ing  an ac c ep tab le g rad e of servic e. It 
is rec ommend ed  that you monitor port and  d isk usag e reg ularly and  p lot it 
over time to antic ip ate a need  for ad d itional ports or a larg er d isk. 
For more information about p ort c ap ac ities, refer to Chap ter 8, ‘‘Traffic  
Re p o r t s ’’.  
						

							DEFINITY AUDIX System Administration  585-300-507  Issue 7
May 1999
Ongoing Preventive Maintenance 
4-4 Monthly Preventive Maintenance Tasks 
4
Monthly Preventive Maintenance 
Ta s k s
Perform the following  p reventive maintenanc e tasks eac h month: 
1. Chec k system limits and  up d ate as nec essary. 
System limits, whic h d efine system-wid e p arameters suc h as the 
maximum numb er of subsc ribers allowed , the total numb er of messag es 
allowed  ac ross all sub sc rib er mailb oxes, and  the total numb er of lists 
allowed  p er sub sc rib er are d efined on the System-p arameters Limits
 
sc reen. 
System limits p arameter information should  b e up d ated  eac h month to 
reflec t your ac tual op eration, and  even more freq uently d uring  the initial 
months of system op eration when new sub sc rib ers and  features are 
ad d ed  to the system and  system ac tivity inc reases. You must monitor 
limits c arefully sinc e d isk sp ac e is limited . 
2. If you are not monitoring  DEFINITY AUDIX p ort and  d isk usag e and  
c ap ac ity on a weekly b asis, do so on a monthly b asis to d etermine if your 
system is p roviding  an ac c ep tab le grad e of servic e and  to p lan for future 
growth. 
3. With 3.2 and  earlier releases, c lean the removab le tap e on an as-need ed  
b asis. Your DEFINITY AUDIX system c ame with a tape-c leaning  kit that 
you c an use oc c asionally to keep  your tap e in g ood  shap e.  
						

							Ongoing Subscriber Administration 
5-1 Overview 
5
DEFINITY AUDIX System Administration  585-300-507  Issue 7
May 1999
5
Ongoing Subscriber Administration
This chapter describes subscriber administration that is performed as required 
d uring normal DEFINITY AUDIX system op eration. 
Overview
Ong oing  sub sc rib er ad ministration inc lud es ad ministrative ac tivities that you 
must c omp lete d aily as well as some that you must c omp lete only oc c asionally. 
Many of these p roc ed ures may have b een p erformed  alread y d uring  the initial 
ad ministrative p hase (for example, ad d ing  sub sc ribers to the system). 
Either you or Luc ent add  the initial set of sub sc rib ers to the system d uring  the 
initial p hase, b ut p ersonnel c hang es within your c omp any will req uire that you 
also ad d  and remove sub sc rib ers on a c ontinuing  b asis. There are also 
procedures described in this chapter that were not described in previous 
c hap ters (for examp le, c hanging  sub sc rib er names). 
There are two g eneral c ategories of ong oing  sub sc rib er administration — routine 
ad ministration and prob lem solving : 
nRoutine sub sc rib er ad ministration involves ac tivities suc h as ad d ing and  
removing subscribers and changing their passwords, names, and 
extensions. 
nProb lem solving  c an involve anything  from answering  simp le q uestions 
ab out using  the DEFINITY AUDIX system to d etermining  why a sub sc riber 
is not ab le to c reate messag es. 
A 
samp le sub scrib er chang e-request form is shown in Ap p end ix A, 
‘‘Communic ating  with Sub sc rib ers’’, to g ive you one way in whic h subsc rib ers 
c an c ommunic ate their p rob lems to you.  
						

							DEFINITY AUDIX System Administration  585-300-507  Issue 7
May 1999
Ongoing Subscriber Administration 
5-2 Adding New Subscribers 
5
Adding New Subscribers
After the initial group  of sub sc rib ers has b een add ed , you must still reg ularly ad d  
sub sc rib ers as new emp loyees join your c omp any or existing  emp loyees without 
DEFINITY AUDIX servic e are ad d ed . Ad d ing  a subsc riber involves assig ning  the 
individ ual a login and  (op tionally) a password , d efining  a set of p ermissions 
called 
class of service op tions that c ontrol the ind ivid ual’s DEFINITY AUDIX 
servic e, and  (op tionally) rec ord ing  the sub sc rib er’s name as it will b e sp oken b y 
the DEFINITY AUDIX system. 
Use your ad ministration terminal to ad d  sub sc rib er information (name, extension, 
p assword , and  servic e op tions) to the DEFINITY AUDIX system. 
Perform the following  step s to ad d  new sub sc rib ers: 
1. Inform the switc h ad ministrator that new sub sc rib ers are b eing  ad d ed  and  
that c all c overag e paths need  to b e estab lished for them. DEFINITY 
AUDIX system switc h ad ministration req uirements are d esc rib ed  in 
Chapter 2, ‘‘Prep aring  for DEFINITY AUDIX System Operation’’. 
2. Ad d  sub sc rib er information (name, extension, and  servic e op tions) to the 
DEFINITY AUDIX d ata filesystem. 
3. Assig n sub scrib ers an initial p assword  that is less than the minimum 
p assword  leng th d efined  on the System-Parameters Features
 sc reen. 
When the sub sc rib er log s on to the DEFINITY AUDIX system for the first 
time, he or she then will b e forc ed  b y the DEFINITY AUDIX system to enter 
a new p assword  that is at least as long  as the req uired  minimum. This is a 
g ood  way to ensure that subsc ribers d o not c ontinue using  the d efault 
p assword  you assign them initially. Also if the Password  Ag ing  feature is 
active, subscribers will be required to change their password according to 
the Password  exp iration interval d efined  on the System-Parameters 
Features sc reen. Use the Sub sc rib er sc reen to add  new sub sc rib ers to the DEFINITY AUDIX 
system. Refer to the
 DEFINITY AUDIX System Sc reens Referenc e for a 
c omp lete desc rip tion of this sc reen.
Alternatively, you may use the AUDIX Ad ministration and  Data Ac q uisition 
Pac kag e (ADAP) to enter new sub sc rib er information direc tly into the 
DEFINITY AUDIX d irec tory d atab ase. This is c onvenient for entering  a larg e 
numb er of sub sc rib ers sinc e you c an enter them as a g roup instead  of 
entering  them ind ividually on the Sub sc rib er sc reen. Refer to 
AUDIX 
Ad ministration and  Data Ac q uisition Pac kag e
, 585-302-502, for more 
information ab out using  ADAP.  
						

							DEFINITY AUDIX System Administration  585-300-507  Issue 7
May 1999
Ongoing Subscriber Administration 
5-3 Adding New Subscribers 
5
4.If none of the p red efined  c lasses of servic e meet a p artic ular sub sc rib er’s 
need s, you c an c ustomize the sub sc rib er’s servic e options b y assig ning  a 
c lass of servic e and  then c hang ing  information via the Sub sc rib er
 sc reen. 
The sub sc rib er’s servic e op tions then are ind ep end ent of the assig ned  
c lass of servic e and  will not b e up d ated  b y c hang es made to any Class of 
Servic e sc reen. For more information ab out c lasses of servic e, see 
‘‘Evaluating  Sub sc rib er Classes of Servic e’’ in this c hapter. 
5. Either you or the sub sc rib er must make a voic e rec ord ing  of the 
sub sc rib er’s name for use as a voic e frag ment that the DEFINITY AUDIX 
system sp eaks d uring  c all answering . If the Name Rec ord  By Sub sc rib er 
feature is used , the DEFINITY AUDIX system will p romp t sub sc rib ers to 
sp eak their own names the first time they log  in. It is rec ommended  that 
you ac tivate this feature sinc e it will sig nific antly d ec rease your workload . 
Otherwise, you must rec ord  all of the sub sc riber names yourself. Refer to 
‘‘Creating and Changing Subscriber Name Recordings’’ b elow for 
instruc tions on rec ord ing  sub sc rib er names. 
6. If you enter a larg e numb er of sub sc rib ers, you may want to manually 
b ac k up  the names filesystem when you are finished. This d ata is normally 
b ac ked  up automatic ally eac h Sund ay, b ut you may want to p rotec t your 
work in the interim if you have rec ord ed  name frag ments for a larg e 
numb er of users. To p erform a d emand  b ac kup  of the sub sc rib er names 
d ata, exec ute the save weekly
 c ommand . You also may want to b ac k up  
system d ata, thoug h your exp osure to d ata loss is not as g reat b ec ause 
the system d ata filesystem is b ac ked up  automatic ally eac h nig ht. 
However, to p erform a demand  bac kup  of system d ata, exec ute the save 
nightly
 c ommand. Refer to ‘‘Backing Up Filesystems and Subdirectories’’ 
in Chap ter 6, ‘‘Ong oing  Data Ad ministration’’, for more information ab out 
manually b ac king  up  data. 
NOTE:
The next step  is not nec essary if you are using  the CL switc h 
integ ration method . 
7. If you are using the Display Set mode of switch integration, run the 
switc h-names audit onc e you have ad d ed  all of the new sub sc ribers. This 
aud it c an take anywhere from 5 to 30 minutes and  will not impac t system 
p erformanc e in any sig nific ant way. The aud it matc hes eac h voic e name 
with a valid  loc al or remote sub sc rib er on the switc h. For more information 
ab out audits, refer to Chap ter 7, ‘‘Alarms, Log s, and  Audits’’
. 
You may add  eac h sub sc rib er as the request to d o so c omes in, or you may 
p refer to wait until you have several req uests and  then ad d  a g roup  of 
sub sc rib ers. In any c ase, you should  notify new sub sc rib ers onc e they have 
b een g iven servic e and , if you have assig ned a d efault p assword , inform eac h 
sub sc rib er of the p assword .  
						

							DEFINITY AUDIX System Administration  585-300-507  Issue 7
May 1999
Ongoing Subscriber Administration 
5-4 Creating and Changing Subscriber Name Recordings 
5
Creating and Changing Subscriber 
Name Recordings
Even if Luc ent p ersonnel add ed subsc rib ers d uring  the initial ad ministration 
p hase, you (or the sub sc rib er) must still rec ord  voic ed  name frag ments for eac h 
subsc riber. Lucent does not make these rec ordings during initial administration. 
The sub sc rib er name rec ord ing is the sp oken name you rec ord  for eac h 
DEFINITY AUDIX sub sc rib er. This frag ment is sp oken b y the DEFINITY AUDIX 
system during call answering, such as “Your call is being answered by AUDIX. 
John Jones is not availab le.”  The first frag ment (
Your call is being answered by 
AUDIX.
) and  the third  frag ment (is not availab le.) are DEFINITY AUDIX system 
frag ments; the sec ond  frag ment (
John Jones) is the sub sc rib er’s rec ord ed  name 
frag ment. 
You have two options for rec ord ing  sub sc rib er name frag ments: 
nHave sub sc rib ers rec ord  their own name rec ord ing s — the rec ommend ed  
op tion.
The name rec ord  b y sub sc rib er feature must b e ac tivated  on the 
System-Parameters Features
 sc reen. When this feature is ac tive, 
sub sc rib ers will b e p romp ted  the first time they log  on to voic e their name 
for use as a name frag ment. However, if you c hoose to rec ord  sub sc rib er 
names b efore they log  in for the first time, they will not b e promp ted  to 
rec ord  their name but will have the option of d oing  so using  the DEFINITY 
AUDIX sub sc rib er ad ministration voic e menu. 
nRec ord  them yourself in a voic e that sound s similar to the one in whic h the 
DEFINITY AUDIX system frag ments were rec ord ed .
Rec ord  subsc riber names using the extension that has announc ement 
control p ermission. 
1. Log  in to the DEFINITY AUDIX system using  your touc h-tone 
telep hone. 
2. Ac c ess the ad ministrative menu. 
3. Id entify the sub sc rib er’s extension. 
4. Sp eak the name in response to DEFINITY AUDIX voic e p romp ts. 
The p roc ed ure for c hang ing  sub sc rib er name rec ord ing s is the same as 
for c reating  the rec ord ing : you simp ly rec ord  over the old  rec ord ed  name 
using the same p roc ed ure. If the Name Rec ord  b y Sub sc rib er feature is 
ac tivated , sub sc ribers c an selec t op tions from the DEFINITY AUDIX voic e 
menu to re-rec ord their names. Typ ic ally, you would  d o this when a 
sub sc rib er has married  and  c hang ed  her name, for examp le, or when a 
sub sc rib er is not satisfied  with the pronunc iation or q uality of the name 
rec ord ing . Ad ditionally, a sub sc rib er mig ht like to re-rec ord  his/her name 
to inc lud e c ertain status information like, “ John Jones on vac ation until 
Oc tob er 10,”  or “ Mary Smith out on b usiness until Novemb er 1.  
						

							DEFINITY AUDIX System Administration  585-300-507  Issue 7
May 1999
Ongoing Subscriber Administration 
5-5 Removing Subscribers 
5
If you d o not use the Name Rec ord  By Sub sc rib er feature (or want to rec ord  the 
names initially even thoug h you will allow sub sc rib ers to c hang e the rec ord ing ), 
p erform the following  step s to c reate or c hang e a subsc riber’s name rec ord ing : 
1. Dial the DEFINITY AUDIX system extension. 
2. Enter your extension (the one that has announc ement c ontrol p ermission) 
followed  b y the p ound  sig n   when p romp ted . 
3. Enter your p assword  followed  b y the pound  sign   when p romp ted . 
4. Press   to p erform system ad ministration. 
5. Press   to rec ord  a sub sc rib er’s name. 
6. Enter the extension of the sub sc rib er whose name you are ab out to rec ord  
followed  b y the p ound  sig n   when p romp ted . 
7. Sp eak the sub sc rib er’s name c learly when p romp ted . 
8. Press   to sig nify the end of the rec ording . 
9. When you are finished  with this sub sc rib er, c hoose one of the following : 
nRep eat steps 6 — 8 for eac h ad ditional sub sc rib er to b e add ed . 
nPress     to return to the ac tivity menu, or just hang  up  to exit 
from the DEFINITY AUDIX system. 
Removing Subscribers
Removing  a sub sc rib er means deleting  the sub sc rib er’s name and  extension 
from the system d irec tories and  the sub sc riber’s name frag ment from the names 
filesystem. You need  to remove sub sc rib ers any time they leave your c omp any or 
no longer require DEFINITY AUDIX service. This process requires fewer steps 
than ad d ing  a sub sc rib er b ec ause b oth the name frag ment and  the sub sc rib er’s 
name and  extension rec ord s c an b e removed  in one step . 
After the sub sc rib er is removed , all rec ord s p ertaining to the sub sc rib er are 
d eleted  automatic ally b y DEFINITY AUDIX audits that are exec uted  every Frid ay 
night. For more information ab out aud its, see Chap ter 7, ‘‘Alarms, Log s, and 
Aud its’’.  Use the Sub sc rib er sc reen to remove DEFINITY AUDIX sub sc rib ers. Refer to 
the 
DEFINITY AUDIX System Sc reens Referenc e for a c omp lete d esc rip tion of 
this sc reen.
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							DEFINITY AUDIX System Administration  585-300-507  Issue 7
May 1999
Ongoing Subscriber Administration 
5-6 Reassigning Subscriber Default Passwords 
5
Reassigning Subscriber Default 
Passwords
If sub sc rib ers forg et their p assword s, you must reassign a d efault p assword  to 
allow them to ag ain log  in to the DEFINITY AUDIX system. The sub sc rib er then 
should  c hang e the d efault p assword  to a unique, p ersonal password . 
Althoug h reassig ning  a d efault p assword  is simp le, it is time-c onsuming  for you. 
Therefore, ask sub sc rib ers to c hoose p assword s that are easy for them to 
rememb er (b ut not easy to d ec od e by others). 
Unlocking Locked Subscriber Logins
For sec urity p urp oses, the DEFINITY AUDIX system ac c ep ts only three 
unsuc c essful log in attemp ts p er sub sc rib er session (c all to the DEFINITY AUDIX 
system) b efore d isc onnec ting . The DEFINITY AUDIX system also monitors the 
numb er of unsuc c essful c onsec utive log in attempts p er sub sc riber. If this 
numb er exc eed s the numb er d efined  on the System-Parameters Features 
sc reen, the DEFINITY AUDIX system 
locks out that sub sc rib er’s log in ID, thus 
p reventing  further system ac c ess. The sub sc rib er c annot ac c ess the DEFINITY 
AUDIX system until you unloc k the sub sc riber’s login. 
NOTE:
If a sub sc rib er is rep eated ly b eing  loc ked  out of the DEFINITY AUDIX 
system, some unauthorized  p erson may b e attemp ting to tamp er with that 
sub sc rib er’s mailb ox. Rep ort this to the sub sc rib er’s manag er or to your 
c omp any sec urity offic e before unloc king  the log in ID. In ad d ition, if the 
unsuc c essful log in attempts have b een mad e from an extension other than 
that of the owner of the mailb ox, the Administration Log  will c ontain 
information ab out the b reak-in attemp ts.  Use the Sub sc rib er sc reen to reassig n d efault p assword s. Refer the 
D EFINITY 
AUDIX System Sc reens Referenc e
 for a c omp lete d esc rip tion of this sc reen.
Use the Sub sc rib er sc reen to unloc k sub sc rib er log ins. Refer to the 
DEFINITY 
AUDIX System Sc reens Referenc e
 for a c omp lete d esc rip tion of this sc reen. 
						

							DEFINITY AUDIX System Administration  585-300-507  Issue 7
May 1999
Ongoing Subscriber Administration 
5-7 Changing a Subscriber’s Name or Extension 
5
Changing a Subscriber ’s Name or 
Extension
Sub sc rib ers may req uest that their names b e c hang ed  in the system d irec tory for 
a variety of reasons, or they may b e assig ned a d ifferent extension. 
If you c hang e a sub sc rib er’s name, you or the sub sc rib er must rec ord  a new 
name frag ment over the sub sc rib er’s existing  name frag ment to reflec t this 
c hang e. Refer to 
Creating and  Chang ing  Sub sc riber Name Rec ord ing s earlier in 
this c hap ter for instruc tions. 
Names or extensions may b e c hang ed  without disrup ting  mailing  lists. A unique 
sub sc rib er ID that is unrelated  to the name or extension is assoc iated  with the 
sub sc rib er’s mailb ox for lists and  p ersonal d irec tories. Lists are automatic ally 
up d ated  for name c hang es. For examp le, if Jane Doe is on a mailing  list and  her 
name has b een c hang ed  to Jane Smith, then the list will b e upd ated  
automatic ally to reflec t the c hang e. 
Listing Subscribers by Name or 
Extension
DEFINITY AUDIX sub sc ribers and  their extension numb ers c an b e listed  on your 
d isp lay sc reen, either alp hab etic ally b y name or numeric ally b y extension. When 
listed  alp hab etic ally, the assig ned  c lass of servic e name or numb er also is 
d isp layed  for eac h sub sc rib er. Use the Sub sc rib er sc reen to c hang e sub sc rib er names or extensions in the 
DEFINITY AUDIX d irec tory. Refer to the 
D EFI N I TY AU D I X Sys t e m  Sc re e n s  
Re f e re n c e
 for a c omplete d esc rip tion of this sc reen.
Alternatively, you may use ADAP to c hang e sub sc riber information d irec tly in 
the DEFINITY AUDIX d irec tory datab ase. Refer 
to AUDIX Ad ministration and 
Data Ac q uisition Pac kag e, 
585-302-502, for more information ab out using  
ADAP.
Use the list Sub sc rib er sc reen to list DEFINITY AUDIX sub sc rib ers 
alphab etic ally or the list Extensions sc reen to list DEFINITY AUDIX extensions 
numeric ally. Refer to the 
DEFINITY AUDIX System Sc reens Referenc e for a 
c omp lete d esc rip tion of these sc reens. 
						

							DEFINITY AUDIX System Administration  585-300-507  Issue 7
May 1999
Ongoing Subscriber Administration 
5-8 Evaluating Subscriber Classes of Service 
5
Evaluating Subscriber Classes of 
Service
Eac h sub sc rib er’s c lass of servic e is c ontrolled  b y servic e op tions that you 
ad minister to b est meet individ ual sub sc rib er req uirements. These servic e 
op tions c ontrol features suc h as ad dressing  mod e (b y name or b y extension) and  
the ord er in whic h messag es are read  out to the sub sc rib er. 
The Class of Servic e sc reen c ontains fields that, tog ether, rep resent the full set of 
ad ministrab le servic e op tions. After d efining  c lasses of servic e, you then c an 
assig n a p artic ular c lass of servic e to eac h sub sc rib er you ad d to the DEFINITY 
AUDIX system with the Sub sc rib er
 sc reen. The DEFINITY AUDIX system then 
automatically assigns the subscriber all of the service options predefined by that 
c lass of servic e. 
Your system inc lud es 12 c lass of servic e names (
c lass0 - class11). All 12 c lasses 
of servic e are available for you to mod ify and  rename as req uired  to d efine 
c lasses of servic e whic h meet different typ es of subsc rib er req uirements within 
your org anization. The default c lass of servic e is c lass0. Initially, the other 11 
c lasses of servic e are p op ulated  with the same values as 
class0 until you d ec id e 
how to c ustomize them to suit sub sc rib er need s. 
The p artic ular servic e op tions that sub sc rib ers within your org anization will 
req uire may not b e immed iately ob vious. Initially, you may want to assig n all 
sub sc rib ers the d efault c lass of servic e. Or, you may want to mod ify one of the 
other c lasses of servic e and  then assig n it to all sub sc rib ers. Either method  will 
p rovid e sub sc rib ers with ad eq uate interim servic e. Onc e you b ec ome familiar 
with the need s of your org anization, you will b e better ab le to id entify the c lasses 
of servic e that are most useful. Then you c an use the Class of Servic e sc reen to 
meet these need s. 
If you mod ify c ertain field s for a p artic ular c lass of servic e after sub sc rib ers have 
b een assig ned  that c lass of servic e, those sub sc rib ers will automatic ally have 
the same field s upd ated  on their subsc rib er rec ord s. For examp le, if you c hang e 
the INCOMING MAILBOX Order
 field  from “ fifo”  to “ lifo”  for the c lass of servic e 
named  
class8 (c os 8), then all sub sc rib ers with either class8 or 8 in the cos
 field  
on their Sub sc rib er
 sc reen also will have the INCOMING MAILBOX Order
 field  
changed automatically. 
For further explanation of the Class of Servic e sc reen, refer to the 
DEFINITY 
AUDIX System Sc reens Referenc e
.  Use the Class of Servic e sc reens to d isp lay and  c hang e ind ivid ual c lasses of 
servic e, and  the list c os c ommand  to list all servic e c lasses. Refer to the 
DEFINITY AUDIX System Sc reens Referenc e for a c omp lete d esc rip tion of 
these sc reens.