Mitel SX 200 DIGITAL Pabx Shipping, Receiving, And Installation Information Manual

							Customer Data Entry (CDE)
4.177 Commands
6-QUIT: Pressing the QUIT softkey exits from the form.
8-SEL. OPTION: Pressing the SELECT OPTION 
softkey displays the Link
Descriptor Options 
subform for the descriptor on the command line.
O-REVIEW:Pressing the REVIEW softkey displays the Review List
subform for the descriptor on the command line.
Page 169 
						

							SECTION MITL9109-094-210-NALink Descriptor Options for Form 42
TABLE 4-64
LINK DESCRIPTOR OPTIONS FOR FORM 42
CDE TERMINAL DISPLAY
‘II :Ol PM 15-JAN-88alarm status = NO ALAIW
‘[ LINK DESCRIPTOR NWIBER : 11IN/CUT GOINGAlarm 
debounce timer(300 - 3200 ms)B8ZS zero code suppression
Slip rate - maintenance limit( 0 - 9000 ) /24 hrs
Slip rate - service limit( 0 - 9000 ) /24 hrs
Slip rate - network sync limit( 0 - 9000 ) /24 hrs
BER - maintenance limit(IO**-n , n = ( 3,4,5,6 )I / hour
BER - service limit(IO**-n , n = ( 3,4,5,6 )) / hour
Framing losses- maintenance limit- 9000 ) /24 hrs
Framing losses -sync source limitIi- 9000 ) /24 hrsRTS timer - service limit exceeded- 255 min )RTS timer -net slip limit exceededI :- 255 min )RTS timer- after alarm( 0 - 300 set )Alarm 
debounce timer(300 - 3200 ms)
I-2-3-4-
j-QUIT7-
8-9-
VALUE2500
YES
2557000
7
4
3
2555000
ii102500
5-
O-ENTER
ATTENDANT CONSOLE DISPLAY
[ LINK DESCRIPTOR Nl&lBER : I]IN/CUT GOINGVALUEAlarmdebouncetimer(300-3200ms)25001>2>3>4>6XUlT7>8>9>ZSENTER4.178 Field Description: The Header line displays the Link Descriptor
number and the direction of the link.
Value: This field lists the selected value for each parameter.
4.179 Commands
l-YES/NO: This 
softkey appears only when the command line dis-
plays the 
B8ZS Zero Code Suppression parameter. (All other param-
eters require numeric entries and have no softkeys). Pressing the
softkey changes the state of the parameter. If the parameter is set to
YES, the 
softkey is NO, if the parameter is set to NO, the softkey is
YES.6-CANCEL: This 
softkey appears after a programming error has oc-
curred. Pressing the CANCEL 
softkey returns the display to the level
where the programming error was made. The CANCEL 
softkey appears
with an error message. Refer to Table 5-1, Programming Error
Messages for a list of these error messages.
6-QUIT: Pressing the QUIT 
softkey returns the display to the Tl Link
Descriptors form.
Page 170 
						

							Customer Data Entry (CDE)
8-CONFIRM: This softkey appears when an option value has been
changed. Press the CONFIRM 
softkey to enter the change in the data-
base.
O-ENTER:Pressing the ENTER softkey (or the RETURN key on a
terminal) stores the changed parameter in the database.
4.180 Option Descriptions
Alarm 
Debounce Timer
The Alarm 
Debounce Timer defines the length of time a fault condition
must be present before it is reported to the main controller. The range
of the timer is 300 to 3200 ms.
The reportable fault conditions are:
8Failure of power supply
0Loss of incoming signals at 1544 Kbps
0Loss of frame alignment (syncronization)
0Alarm indication received from the remote end
B8ZS Zero Code Suppression
Special encoding is used when a data byte for a channel contains
consecutive bits of the same level. There are two of these line code
options available: Alternate Mark Inversion 
(AMI) and Bipolar 8 Zero
Substitution 
(B8ZS).In 
AMI, a 1 is transmitted as a pulse and a 0 is transmitted as no pulse.
Consecutive l’s are sent as pulses of opposite polarity. If a channel
data byte contains all O’s, bit 2 is forced to a 1.
In 
B8ZS encoding, consecutive l’s are sent as pulses of opposite
polarity, as in 
AMI. A block of eight O’s is replaced by a special eight
bit sequence.
Slip Rate Limits
Slip is the deletion or repetition of a single frame of information in a
digital bit stream. There are 3 slip rate limits: maintenance, service and
network. The slip rate limit is between 0 and 9000 slips over a 24 hour
period.
BER LimitsBER is the Bit Error Rate over the last hour. There are 2 BER rate limits:
maintenance and service. The bit error rate limit is between 
lo**-3 (1
error per 1000 bits) and
lO**-6(1 error per 1,000,000 bits) over a 24
hour period.
Page 171 
						

							SECTION MITL9109-094-210-NAFraming Loss Limits
Framing loss occurs when the digital trunk cannot find the proper
framing bit sequence in the incoming bit stream. It is thus unable to
ensure correct decoding of the channels. There are 2 framing loss
limits maintenance and service. The framing loss error rate is between
0 and 9000 losses over a 24 hour period.Limit Definitions
Maintenance:When a maintenance limit is exceeded, the system
generates a maintenance log.
Service:When a service limit is exceeded, the system generates a
maintenance log and removes the link from service.Slip Rate
- Network Sync Limit: When this limit is exceeded, the
system generates a maintenance log and selects a new sync source.
RTS Timer 
- Service Limit ExceededThis timer specifies the minimum time for which the link is removed
from service after a service limit has been exceeded. When the timer
expires, the link is returned to service only if the error rate on the linkis less than 
1/24th the maintenance limit. The range of the timer is 1
to 255 minutes.RTS Timer 
- Net Slip Limit Exceeded
This timer specifies the minimum time for which the link is removed as
the sync source after the net slip limit has been exceeded. When the
timer expires, the link is again available to the system as a sync source
only if the number of slips on the link is less than the net slip limit. The
range of the timer is 1 to 255 minutes.RTS Timer 
- After Alarm
This timer specifies how long the link will remain unavailable after an
alarm condition has cleared.
Page 172 
						

							Customer Data Entry (CDE)
Review List for Form 42
4.181 The review form provides a list of users for each descriptor,identified by their physical location. There are no fields that the
programmer can edit.TABLE 4-65
II:01 PM 15-JAN-88REVIEW LIST FOR FORM 42
CDE TERMINAL DISPLAY
alarm status = NO ALARM: LINK DESC NO:
011BAYSLOTCOMMENTS2-3-
4-5-
i-WIT7-8-9-O-ENTER
ATTENDANT CONSOLE DISPLAY
4.182 Field Description:
The header line identifies the link descriptor
being reviewed.BAY, SLOT: These fields list the bay and slot location of the 
Tl trunk
cards using this link descriptor.Comments: The text in this field comes from the Comments field of
Form 43, Tl Link Assignment.
Page 173 
						

							SECTION MITL9109-094-210-NAForm 43 
- Tl Link Assignment
4.183 This form assigns one of the ten link descriptors to each link.
TABLE 4-66
FORM 43 
- Tl LINK ASSIGNMENT
CDE 
TERMII\!AL DISPLAY
11 : 01FM15-JAN-88alarmstatus=NO ALARM
TRUUK TYPEBAYSLOTLINK DESC Nlhl
COMMENTS
l-2-3-4-5-
6-QUIT7-8-9-0-EMERATTENDANT CONSOLE DISPLAY
TRUUK TYPEBAY
SLOTLINK DESC NWl
COMMENTS
[BLANK]
I>2>3>4>6xlJlT7>8>9>FGNTER4.184 Field Description
TRUNK TYPE: This field cannot be edited.
BAY, SLOT: This field lists the Bay and Slot location of the 
Tlcards in the system.trunk
LINK DESC NUM: This field lists the Link Descriptor that applies to
each 
Tl trunk card.
COMMENTS: The comments field can store 20 characters.
4.185 Commands
6-QUIT: Pressing the QUIT 
sof-tkey returns the user to the main menu.
Refer to Table 4-2, Available Forms.
8-CONFIRM: This 
softkey appears when an option value has been
changed. Press the CONFIRM 
softkey to enter the change in the data-Page 174 
						

							Customer Data Entry (CDE)base.O-ENTER: This 
softkey appears after the programmer has entered a
Link Descriptor Number for a Tl trunk card.Page 175 
						

							SECTION MITL9109-094-210-NAForm 44
- Tl Network Sync
4.186 This form determines the order in which the links will be used
as the network synchronization clock source. When the error
threshold of the first clock source is crossed, the second clock is used
as the sync source, etc.
TABLE 4-67
FORM 44 
- Tl NETWORK SYNC
CDE TERMINAL DISPLAY
II:01 PM 15-JAN-88alarm status = NO ALARM
DESCR I PTORBAY
SLOTCOMMENTSFirst clock source
Second clock source
Third clock source
Fourth clock source
Fifth clock source
Sixth clock source
Seventh clock source
Eighth clock source
First clock source
I-2-
i-W IT7-3-4-
8-9-ATTENDANT CONSOLE DISPLAY5-
O-ENTER
First clock source
BAYSLOTCXBMENTS
3>4>5>8>9>O>ENTER4.187 Field Description
DESCRIPTOR: This field lists the clock sources, first through eighth, for
system synchronization to the 
Tl network. This field cannot be edited.
BAY, SLOT: This field lists the Bay/Slot location of the 
Tl trunk cards
in the system.
LINK DESC NUM: This field lists the Link Descriptor that applies to
each 
Tl trunk card.
COMMENTS: The comments field can store 20 characters.
4.188 Commands
6-QUIT: Pressing the QUIT 
softkey returns the user to the main menu.
Refer to Table 4-2, Available Forms.
Page 176 
						

							Customer Data Entry (CDE)
8-CONFIRM: This softkey appears when an option value has been
changed. Press the CONFIRM 
softkey to enter the change in the data-
base.O-ENTER: This 
softkey appears after the programmer has entered a Tltrunk card Bay/Slot location as a clock source.
Page 177 
						

							SECTION MITL9109-094-210-NAPage 178