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參數(shù)資料
| 型號： | MT9071 |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | Quad T1/E1/J1 Transceiver(多端口 T1/E1/J1幀調(diào)節(jié)器（集成四個獨立幀調(diào)節(jié)器）) |
| 中文描述： | 四T1/E1/J1收發(fā)器（多端口的T1/E1/J1幀調(diào)節(jié)器（集成四個獨立幀調(diào)節(jié)器）） |
| 文件頁數(shù)： | 135/217頁 |
| 文件大?。?/td> | 686K |
| 代理商： | MT9071 |
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Preliminary Information
MT9071
135
Bit
Name
Functional Description
15-14
13
(##)
KLVE
Not Used
Keep Alive.
If one, indicates that the AIS status bit (of this register) has been one for at least
100ms. This bit is zero when AIS is zero. Refer to I.431.
Loss of Signal Status Indication.
If one, indicates the presence of a loss of signal condition
on the received PCM30 link. A loss of signal condition occurs after the detection of 192 or 32
consecutive zeros as set by the control bit L32Z detailed in Table 81 - E1 Test, Error and
Loopback Control - R/W Address Y01
.
A loss of signal condition terminates when an average
ones density of at least 12.5% has been received over a period of 255 contiguous pulse
positions starting with a pulse. If zero, indicates normal operation.
Alarm Indication Signal 16 Status.
If one, indicates an all ones signal (1111 1111) is being
received in timeslot16 of the received PCM30 link for the current frame. Updated on a basic
frame basis. If zero, normal operation.
Alarm Indication Status Signal.
If one, indicates that an Alarm Indication Signal (AIS) is
detected on the received PCM30 link. The criteria (i.e. less than three zeros in a two frame
period) for AIS detection is determined by the control bit ASEL (see Table 79 - E1 Alarms and
Framing Control - R/W Address Y00). If the AIS bit is zero, indicates that an AIS signal is not
being received.
Remote Alarm Indication Status.
Indicates the status of the bit (A-bit) received on the PCM30
link in bit position 3 of timeslot 0 of the non-frame alignment signal (NFAS) frames. If one, there
is currently a remote alarm condition. Updated on a NFAS frame basis.
This bit is identical to the RAI bit detailed in Table 111 - E1 NFAS Signal and FAS Status - R
Address Y13 and is duplicated here for convenience.
Auxiliary Pattern.
If one, an auxiliary pattern (101010) of at least 512 bits is being received on
the PCM30 link. If zero, an auxiliary pattern is not being received. This pattern will be decoded
in the presents of a bit error rate of as much as 10
-3
.
Receive Multiframe Alignment Bits One to Four.
Indicates the status of the bits received on
the PCM30 link in bit positions one to four of timeslot 16 of frame 0 of the multiframe alignment
signal (MAS). These bits should be 0000 for proper signaling multiframe alignment. Updated on
a MAS frame basis.
Receive Spare Bit X1.
Indicates the status of the bit received on the PCM30 link in bit position
five of timeslot 16 of frame 0 of the multiframe alignment signal (MAS). Updated on a MAS
frame basis.
Receive Y-bit.
Indicates the status of the bit (Y-bit) received on the PCM30 link in bit position
six of timeslot 16 of frame 0 of the multiframe alignment signal (MAS). Updated on a MAS frame
basis. If one, typically indicates a loss of multiframe alignment at the remote end. If zero,
typically indicates acquired multiframe alignment at the remote end.
Receive Spare Bits X2 and X3.
Indicates the status of the bits received on the PCM30 link in
bit positions seven and eight of timeslot 16 of frame 0 of the multiframe alignment signal (MAS).
Updated on a MAS frame basis.
Table 109 - E1 Alarms & MAS Status - R Address Y12
12
LOSS
11
AIS16
10
AIS
9
RAI
8
AUXP
7
6
5
4
3
RMA1
RMA2
RMA3
RMA4
X1
2
Y
1
0
X2
X3
Bit
Name
Functional Description
15-14
13
12
11
(##)
RXP2
RXP1
RXP0
Not Used
Receive Phase Count.
A three bit counter that indicates the number of ST-BUS 1/8 bit times
there are between the receive elastic buffer internal write frame boundary and the ST-BUS read
frame boundary. The count is updated every 250 uS. The RXP2 bit indicates a 1/2 bit phase
offset, the RXP1 bit indicates a 1/4 bit phase offset and the RXP0 bit indicates a 1/8 bit phase
offset.
Table 110 - T1 Receive Elastic Buffer Status - R Address Y13
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