| ds1CSUIndex |
.1.3.6.1.3.2.1.1.1 |
|
The index value which uniquely identifies the CSU
to which this entry is applicable.
|
| ds1Index |
.1.3.6.1.3.2.1.1.2 |
|
An index value that uniquely identifies an
interface to a ds1. The interface identified by a
particular value of this index is the same
interface as identified by the same value an
ifIndex object instance.
|
| ds1TimeElapsed |
.1.3.6.1.3.2.1.1.3 |
|
The number of seconds that have elapsed since the
beginning of the current error-measurement period.
Any fraction is rounded up.
|
| ds1ValidIntervals |
.1.3.6.1.3.2.1.1.4 |
|
The number of previous intervals for which valid
data was collected. The value will be 96 unless
the CSU device was brought online within the last
24 hours, in which case the value will be the
number of complete 15 minute intervals the CSU has
been online.
|
| ds1LineType |
.1.3.6.1.3.2.1.1.5 |
|
This variable indicates the variety of DS1 Line
implementing this circuit. The type of circuit
affects the number of bits per second that the
circuit can reasonably carry, as well as the
interpretation of the usage and error statistics.
The values, in sequence, describe:
TITLE: SPECIFICATION:
ds1ESF AT&T Extended SuperFrame DS1 [10]
ds1D4 AT&T D4 format DS1 [16], [17]
ds1ANSI-ESF ANSI Extended SuperFrame format [14]
ds1G704 CCITT Recommendation G.704 [12]
(section 2.1.3.2)
ds1G704-CRC CCITT Recommendation G.704 [12]
(section 2.1.3.1)
|
| ds1ZeroCoding |
.1.3.6.1.3.2.1.1.6 |
|
This variable describes the variety of Zero Code
Suppression used on the link, which in turn
affects a number of its characteristics.
ds1JammedBit refers the Jammed bit Zero Encoding,
in which the AT&T specification of at least one
pulse every 8 bit periods is literally implemented
by forcing a pulse in bit 8 of each channel.
Thus, only seven bits per channel, or 1.344 Mbps,
is available for data.
ds1B8ZS refers to the use of a specified pattern
of normal bits and bipolar violations which are
used to replace a sequence of eight zero bits (see
[14]). In this context, all eight bits in a
channel are technically available for data, but
care must be taken with D4 encoded data to avoid
having HDLC Flag streams imitate spurious Yellow
Alarm conditions. Typically, one bit per frame is
ignored to force flag streams to rotate, thereby
avoiding this error type. CCITT Recommendation
G.703 [11] may be referred to for further
definition of these.
ds1InvertedHDLC refers to the practice, common on
HDLC encoded DS1 data links, of inverting the data
between the serial interface chip and the CSU.
Since HDLC guarantees one zero every 6 bits in the
worst case, while the standards call for (in
effect) at least one pulse every eight, inverted
HDLC enjoys 4/24 one's density on the line, which
may improve the effective clock stability of a DS1
line. As with B8ZS, all eight bits in a channel
are technically available for data, but care must
be taken with D4 encoded data to avoid having HDLC
Flag streams imitate spurious Yellow Alarm
conditions. Typically, one bit per frame is
ignored to force flag streams to rotate, thereby
avoiding this error type.
ANSI Clear Channels may use ds1ZBTSI, or Zero Byte
Time Slot Interchange (see [14]).
G.704 links, with or without CRC, use ds1HDB3 (see
[11]).
|
| ds1Loopback |
.1.3.6.1.3.2.1.1.7 |
|
This variable represents the loopback state of
the CSU. Devices supporting read/write access
should return badValue in response to a requested
loopback state that the CSU does not support. The
values mean:
ds1NoLoop
Not in the loopback state. A device that is
not capable of performing a loopback on either
interface shall always return this as it's
value.
ds1LocalLoopbackLocalSide
Signal received from the local side of the
device is looped back at the local connector
(eg, without involving the CSU).
ds1LocalLoopbackRemoteSide
Signal received from the local side of the
device is looped back at the remote connector
(eg, through the CSU).
ds1RemoteLoopbackLocalSide
Signal received from the remote side of the
device is looped back at the local connector
(eg, through the CSU).
ds1RemoteLoopbackRemoteSide
Signal received from the remote side of the
device is looped back at the remote connector
(eg, without involving the CSU).
|
| ds1SendCode |
.1.3.6.1.3.2.1.1.8 |
|
This variable indicates what type of code is
being sent across the DS1 circuit by the CSU. The
values mean:
ds1SendNoCode sending looped or normal data
ds1SendSetCode sending a loopback request
ds1SendResetCode sending a loopback termination request
ds1SendQRSS sending the BERT pattern described in
ANSI T1.403-1989 section 5.6
ds1OtherTest sending a different BERT/BLERT pattern,
such as all zeroes, all ones, etc.
|
| ds1YellowAlarm |
.1.3.6.1.3.2.1.1.9 |
|
This variable indicates if a Yellow Alarm
condition exists.
Note that G.704 interfaces do not support Yellow
Alarms. Accordingly, such agents should return
the value ds1NoYellowAlarm.
|
| ds1RedAlarm |
.1.3.6.1.3.2.1.1.10 |
|
This variable indicates if a Red Alarm condition
exists.
Note that G.704 interfaces do not support Red
Alarms. Accordingly, such agents should return
the value ds1NoRedAlarm.
|
| ds1CircuitIdentifier |
.1.3.6.1.3.2.1.1.11 |
|
This variable contains the transmission vendor's
circuit identifier, for the purpose of
facilitating troubleshooting.
|
| ds1IntervalIndex |
.1.3.6.1.3.2.2.1.1 |
|
The index value which uniquely identifies the CSU
to which this entry is applicable. The interface
identified by a particular value of this index is
the same interface as identified by the same value
an ds1CSUIndex object instance.
|
| ds1IntervalNumber |
.1.3.6.1.3.2.2.1.2 |
|
A number between 1 and 96, where 1 is the most
recently completed 15 minute interval and 96 is
the least recently completed 15 minute interval
(assuming that all 96 intervals are valid).
|
| ds1IntervalESs |
.1.3.6.1.3.2.2.1.3 |
|
The counter associated with the number of Errored
Seconds, as defined by ANSI Draft Standard
T1M1.3/90 - 027R2[15], encountered by a DS1 CSU
during one of the previous 96 fifteen minute
intervals.
|
| ds1IntervalSESs |
.1.3.6.1.3.2.2.1.4 |
|
The counter associated with the number of
Severely Errored Seconds, as defined by ANSI Draft
Standard T1M1.3/90 - 027R2[15], encountered by a
DS1 CSU during one of the previous 96 fifteen
minute intervals.
|
| ds1IntervalSEFSs |
.1.3.6.1.3.2.2.1.5 |
|
The counter associated with the number of
Severely Errored Framing Seconds, as defined by
ANSI Draft Standard T1M1.3/90 - 027R2[15],
encountered by a DS1 CSU during one of the
previous 96 fifteen minute intervals.
|
| ds1IntervalUASs |
.1.3.6.1.3.2.2.1.6 |
|
The counter associated with the number of
Unavailable Seconds, as defined by ANSI Draft
Standard T1M1.3/90 - 027R2[15], encountered by a
DS1 CSU during one of the previous 96 fifteen
minute intervals.
|
| ds1IntervalCSSs |
.1.3.6.1.3.2.2.1.7 |
|
The counter associated with the number of
Controlled Slip Seconds, as defined by ANSI Draft
Standard T1M1.3/90 - 027R2[15], encountered by a
DS1 CSU during one of the previous 96 fifteen
minute intervals.
|
| ds1IntervalBPVs |
.1.3.6.1.3.2.2.1.8 |
|
The counter associated with the number of Bipolar
Violations, as defined by ANSI Draft Standard
T1M1.3/90 - 027R2[15], encountered by a DS1 CSU
during one of the previous 96 fifteen minute
intervals.
|
| ds1IntervalCVs |
.1.3.6.1.3.2.2.1.9 |
|
The counter associated with the number of Code
Violation Error Events, as defined by ANSI Draft
Standard T1M1.3/90 - 027R2[15], encountered by a
DS1 CSU during one of the previous 96 fifteen
minute intervals.
Note that D4 and G.704 (section 2.1.3.2)
interfaces do not support Code Violation Error
Events. Accordingly, such agents may treat this
object as having an ACCESS clause value of not-
accessible.
|
| ds1CurrentIndex |
.1.3.6.1.3.2.3.1.1 |
|
The index value which uniquely identifies the CSU
to which this entry is applicable. The interface
identified by a particular value of this index is
the same interface as identified by the same value
an ds1CSUIndex object instance.
|
| ds1CurrentESs |
.1.3.6.1.3.2.3.1.2 |
|
The counter associated with the number of Errored
Seconds, as defined by ANSI Draft Standard
T1M1.3/90 - 027R2[15], encountered by a DS1 CSU in
the current 15 minute interval.
|
| ds1CurrentSESs |
.1.3.6.1.3.2.3.1.3 |
|
The counter associated with the number of
Severely Errored Seconds, as defined by ANSI Draft
Standard T1M1.3/90 - 027R2[15], encountered by a
DS1 CSU in the current 15 minute interval.
|
| ds1CurrentSEFSs |
.1.3.6.1.3.2.3.1.4 |
|
The counter associated with the number of
Severely Errored Framing Seconds, as defined by
ANSI Draft Standard T1M1.3/90 - 027R2[15],
encountered by a DS1 CSU in the current 15 minute
interval.
|
| ds1CurrentUASs |
.1.3.6.1.3.2.3.1.5 |
|
The counter associated with the number of
Unavailable Seconds, as defined by ANSI Draft
Standard T1M1.3/90 - 027R2[15], encountered by a
DS1 CSU in the current 15 minute interval.
|
| ds1CurrentCSSs |
.1.3.6.1.3.2.3.1.6 |
|
The counter associated with the number of
Controlled Slip Seconds, as defined by ANSI Draft
Standard T1M1.3/90 - 027R2[15], encountered by a
DS1 CSU in the current 15 minute interval.
|
| ds1CurrentBPVs |
.1.3.6.1.3.2.3.1.7 |
|
The counter associated with the number of Bipolar
Violations, as defined by ANSI Draft Standard
T1M1.3/90 - 027R2[15], encountered by a DS1 CSU in
the current 15 minute interval.
|
| ds1CurrentCVs |
.1.3.6.1.3.2.3.1.8 |
|
The counter associated with the number of Code
Violation Error Events, as defined by ANSI Draft
Standard T1M1.3/90 - 027R2[15], encountered by a
DS1 CSU in the current 15 minute interval.
Note that D4 and G.704 (section 2.1.3.2)
interfaces do not support Code Violation Error
Events. Accordingly, such agents may treat this
object as having an ACCESS clause value of not-
accessible.
|
| ds1TotalIndex |
.1.3.6.1.3.2.4.1.1 |
|
The index value which uniquely identifies the CSU
to which this entry is applicable. The interface
identified by a particular value of this index is
the same interface as identified by the same value
an ds1CSUIndex object instance.
|
| ds1TotalESs |
.1.3.6.1.3.2.4.1.2 |
|
The counter associated with the number of Errored
Seconds, as defined by ANSI Draft Standard
T1M1.3/90 - 027R2[15], encountered by a DS1 CSU in
the previous 24 hour interval
|
| ds1TotalSESs |
.1.3.6.1.3.2.4.1.3 |
|
The counter associated with the number of
Severely Errored Seconds, as defined by ANSI Draft
Standard T1M1.3/90 - 027R2[15], encountered by a
DS1 CSU in the previous 24 hour interval.
|
| ds1TotalSEFSs |
.1.3.6.1.3.2.4.1.4 |
|
The counter associated with the number of
Severely Errored Framing Seconds, as defined by
ANSI Draft Standard T1M1.3/90 - 027R2[15],
encountered by a DS1 CSU in the previous 24 hour
interval.
|
| ds1TotalUASs |
.1.3.6.1.3.2.4.1.5 |
|
The counter associated with the number of
Unavailable Seconds, as defined by ANSI Draft
Standard T1M1.3/90 - 027R2[15], encountered by a
DS1 CSU in the previous 24 hour interval.
|
| ds1TotalCSSs |
.1.3.6.1.3.2.4.1.6 |
|
The counter associated with the number of
Controlled Slip Seconds, as defined by ANSI Draft
Standard T1M1.3/90 - 027R2[15], encountered by a
DS1 CSU in the previous 24 hour interval.
|
| ds1TotalBPVs |
.1.3.6.1.3.2.4.1.7 |
|
The counter associated with the number of Bipolar
Violations, as defined by ANSI Draft Standard
T1M1.3/90 - 027R2[15], encountered by a DS1 CSU in
the previous 24 hour interval.
|
| ds1TotalCVs |
.1.3.6.1.3.2.4.1.8 |
|
The counter associated with the number of Code
Violation Error Events, as defined by ANSI Draft
Standard T1M1.3/90 - 027R2[15], encountered by a
DS1 CSU in the previous 24 hour interval.
Note that D4 and G.704 (section 2.1.3.2)
interfaces do not support Code Violation Error
Events. Accordingly, such agents may treat this
object as having an ACCESS clause value of not-
accessible.
|
| ds1FracIndex |
.1.3.6.1.3.2.5.1.1 |
|
The index value which uniquely identifies the CSU
to which this entry is applicable. The interface
identified by a particular value of this index is
the same interface as identified by the same value
an ds1CSUIndex object instance.
|
| ds1FracNumber |
.1.3.6.1.3.2.5.1.2 |
|
The channel number for this entry.
|
| ds1FracIfIndex |
.1.3.6.1.3.2.5.1.3 |
|
An index value that uniquely identifies an
interface to a ds1. The interface identified by a
particular value of this index is the same
interface as identified by the same value an
ifIndex object instance.
|
