E1
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... [CCITT-G.703], [ITU-T-G.704], referred to as E1 for the rest of this
memo. J1 refers to the definition presented in [JT-G704 ...
... The various DS1, J1, and E1 line disciplines are similar enough that
separate MIBs are unwarranted, although there are some differences.
...
... J1.
Where it is necessary to distinguish between the flavors of E1 with
and without Cyclic Redundancy Check (CRC ...
... ifConnectorPresent Set to true(1) normally, except for
cases such as DS1/E1 over AAL1/ATM where
false(2) is appropriate.
...
... implementer use the objects
correctly. Treatment of E3 and E1 would be similar, with the number
of DS0s being different depending on the framing of the E1.
...
... E3 and E1 would be similar, with the number
of DS0s being different depending on the framing of the E1.
Assume that a DS3 ...
... signals.
For E1 links, in-frame occurs when a) in frame N the frame
alignment signal is correct and b) in frame N+1 the frame
...
... G.775, Section 5.4).
For E1 links, the 'all-ones' condition is detected at the line
interface ...
...
For D4 and E1-noCRC links, the presence of Bipolar Violations also
triggers an Errored Second ...
... 4.6.2.5).
For E1-CRC signals, a Severely Errored Second is a second with 832
or more Path Coding Violation ...
... received. The Loss of Multiframe failure can only be declared for
E1 links operating with G.732 [CCITT-G.732] framing (sometimes
...
... TS16 of frame 0 is received set to zero. The Far End
Loss of Multiframe failure can only be declared for E1 links
operating in "Channel ...
... application that receives SNMP messages and replies to them on
behalf of the devices that implement the actual DS1/E1 interfaces.
The proxy ...
... necessarily forward the requests to the actual DS1/J1/E1
interface. It is expected in such an application that there are
...
... DS2 and E2 has been added.
(7) Additional lineTypes for DS2, E2, and unframed E1
were added.
(8) The definition of valid ...
...
(19) An object has been added to indicate whether or
not this DS1/E1 is channelized.
(20) Line coding type of B6ZS has been added for DS2."
...
... J1 with No Framing
For clarification, the capacity for each E1 type
is as listed below:
dsx1E1Unframed - E1 ...
... E1 type
is as listed below:
dsx1E1Unframed - E1, no framing = 32 x 64k = 2048k
dsx1E1 or dsx1E1CRC - E1, with framing,
...
... dsx1E1Unframed - E1, no framing = 32 x 64k = 2048k
dsx1E1 or dsx1E1CRC - E1, with framing,
no signalling = 31 x 64k = 1984k
dsx1E1MF or dsx1E1CRCMF - E1 ...
... E1, with framing,
no signalling = 31 x 64k = 1984k
dsx1E1MF or dsx1E1CRCMF - E1, with framing,
signalling = 30 x 64k = 1920k"
REFERENCE
...
... "This variable represents the channel number of
the DS1/E1 on its parent DS2/E2 or DS3/E3. A
...
... STATUS current
DESCRIPTION
"Indicates whether this DS1/E1 or DS2 is
channelized or unchannelized.
...
... T1 and J1 lines, the
value is typically balanced100ohms(3). For E1
lines, the value is typically unbalanced75ohms(2)
and balanced120ohms(4). When this object does not
...
... control signals and performance
data. In E1, control and status
signals are carried using National
Bits ...
... control signals and performance
data. In E1, control and status
signals are carried using National
Bits ...
... control signals and performance
data. In E1, control and status
signals are carried using National
Bits ...
...
In the case of dsx1LineType, for example, both ends of a DS1/E1 must
have the same value in order for traffic to flow ...
... Nicklass, O., "Definitions of Managed Objects for the DS1, E1, DS2, and E2 Interface Types", RFC 3895prop(-> 4805prop) ...
... Fowler, D., "Definitions of Managed Objects for the DS1, E1, DS2 and E2 Interface Types", RFC 2495(-> 3895prop(-> 4805prop)) ...
... Baker, F. and J. Watt, "Definitions of Managed Objects for the DS1 and E1 Interface Types", RFC 1406(-> 2495(-> 3895prop(-> 4805prop))), January 1993. ...
... rules would apply for other DS1, DS2, and E1 interface variants. The
procedure guarantees that the statistical counters ...
... DS2 and E2 has been added.
(7) Additional lineTypes for DS2, E2, and unframed E1 were added.
(8) The definition of valid intervals has been clarified for the
...
... DS3) has been added.
(19) An object has been added to indicate whether or not this
DS1/E1 is channelized.
(20) Line coding type of B6ZS has been added for DS2.
...