Vodavi Starplus Sts Key Systems Programming Operation Manual

T-1 Alarm Programming2-261
Features and Operation
T-1 Alarm Programming
Description
The T-1 Trunk card and the system software provide tools to help detect and isolate problems 
which may occur with the T-1 circuit. There are six LEDs mounted on the outside edge of the 
T-1 Trunk card which either light or flash to indicate a variety of conditions on the T-1 circuit. 
The Central Office Maintenance Center can send a command to place the CSU into Line Loop 
Back mode. If there is no CSU, the T-1 Trunk...

2-262T-1 Alarm Programming
Features and Operation
Enable/Disable (Carrier Loss Alarm)
Description
A Receive Carrier Loss (RCL) condition is declared when no bits have been received by the T-1 
Trunk card for 150ms. It causes an Out of Frame (OOF) condition, and 2.5 seconds later a RED 
Carrier Failure Alarm (CFA) state. During the time the RCL and RED alarm are declared, 
incoming and outgoing signal bits are frozen. Outgoing calls cannot be made.
Programming Steps
1. Press the CARRIER LOSS flexible...

T-1 Alarm Programming2-263
Features and Operation
4. Continue programming the Blue Alarm parameters using the steps provided earlier in 
this section for Clearing the alarm, Minor alarm, Major alarm, Time Period, and Attendant 
display.
DEFAULT … Blue Alarm is enabled for all T-1 Trunks.
Yellow Alarm
Description
The Yellow Alarm is recorded when the T-1 Trunk card detects a yellow Carrier Failure Alarm 
(CFA) signal from the distant end for a minimum 335 ms. The Yellow Alarm is transmitted by 
the remote...

2-264T-1 Alarm Programming
Features and Operation
4. Continue programming Red Alarm parameters using the steps provided in this section 
for Clearing the alarm, Minor alarm, Major alarm, Time Period, and Attendant display.
DEFAULT … Red Alarm is enabled for all T-1 trunks.
Bipolar Variations Alarm
Description
Excessive Bipolar Violations (BPV) are declared when a T-1 Trunk card detects a BPV rate in 
excess of 1x10+6 errors in 1000 seconds.
Programming Steps
1. Press the BIPOLAR VARIATIONS flexible...

T-1 Alarm Programming2-265
Features and Operation
3. Press HOLD button to save entry. A confirmation tone sounds and the display updates.
4. Continue to program the Frame Slip Alarm parameters using steps provided in this 
section for Clearing the alarm, Minor alarm, Major alarm, Time Period, and Attendant 
display.
DEFAULT … Frame Slip is enabled on T-1 trunks.
Data Errors Alarm
Description
Data errors are illegal bit formations. If the Data Errors Alarm is enabled, an error message is 
sent to the...

2-266T-1 Alarm Programming
Features and Operation
Minor Alarm
Description
If the error counter for an Alarm Code reaches the number programmed as a Minor Alarm 
within the time (in minutes) entered in the Time Period, the system reports a Minor Alarm 
condition. The Minor Alarm threshold setting is variable from 00 to 99 minutes.
Programming Steps
1. Press the MINOR ALARM flexible button (FLASH 47, Button #13). Button #13 LED is lit 
steady. The following message displays:
2. Enter a valid number (00-99)...

T-1 Alarm Programming2-267
Features and Operation
Time Period
Description
The Time Period option represents the length of time set for Minor and Major alarm 
conditions to occur.
Programming Steps
1. Press the TIME PERIOD flexible button (FLASH 47, Button #15). Button #15 LED is lit 
steady. The following message displays:
2. Enter a valid number (00-99) on the dial pad which represents the time period limit.
3. Press the HOLD button to save the entry. A confirmation tone sounds and the display...

2-268T- 1  Tr u n k i n g
Features and Operation
T- 1  Tr u n k i n g
Description
The T-1 trunk card can be used to connect 24 lines (24 channels per T-1 circuit) from a CO to 
the system. These lines can be any mix of inbound WATS, outbound WATS, standard DDD 
lines, DID lines, or TIE lines. The system also supports Fractional T-1 Service.
T- 1  S i g n a l i n g  Ty p e
Description
The T-1 trunk card provides the STS Systems with the ability to connect to T-1 trunk circuits. 
The T-1 trunk card...

T- 1  Tr u n k i n g2-269
Features and Operation
5. Press the T-1 SIGNALING flexible button (FLASH 40, Page B, Button #1). The following 
message displays:
6. Enter a valid number (0-7) on the dial pad that corresponds to one of the following types:
7. Press the HOLD button. A confirmation tone sounds and the display updates.
DEFAULT … T-1 Signal Type option is Loop Start.
T-1  SIGNAL  TYPE 0-7
LO OP  START
Table 2-22: T-1 Signaling Options
Signaling Option Description
[0] = None None is used for...

2-270T- 1  Tr u n k i n g
Features and Operation
T- 1  R i n g b a c k  O p t i o n
Description
The T-1 Ringback option supports T-1 channels which require ringback tone to be 
transmitted to the caller while a call is ringing. Some carriers require the system to generate 
the ringback tone, this feature allows the system to provide this option. Ringback tone is not 
used with the DISA, TIE Line, or DID signal options.
Programming Steps
1. Press the RINGBACK OPTION flexible button (FLASH 40, Page B,...