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參數(shù)資料
| 型號(hào)： | MH89760BN |
| 廠商： | Mitel Networks Corporation |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| 中文描述： | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| 文件頁數(shù)： | 21/38頁 |
| 文件大?。?/td> | 846K |
| 代理商： | MH89760BN |
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4-75
Preliminary Information
MH89760B
Figure 14 - ISDN Voice Data Channel Bank
Digital Line Interface
Switch Matrix
MT8980
T1 Interface
MT8910
MT8910
MT8952
MT8952
MT8952
MT8941
Z
T
Z
T
DSTo
DSTi
DSTo
DSTi
DSTo
DSTi
DSTo
DSTi
DSTo
DSTi
STi0
STo0
C4i
F0i
STo1
STi1
STo2
STi3
STo3
D-Channel Processing
DSTi
DSTo
CSTi0
CSTo
CSTi1
C2i
C1.5i
OUTA
OUTB
RxR
RxT
E8Ko
F0i
F0i
E8Ko
C4o
C2o
F0o
C1.5
Equal-
izer
μ
P
μ
P
μ
P
μ
P
MH89760B
To control and monitor the MT8910s and the T1
interface the switch matrix operates some of its input
and output streams in message mode. This enables
the system to control all of the functions of the
MT8910s and the T1 interface through the Control
ST-BUS points, (CSTi/o).
Clock synchronization is done by the MT8941.
Phase-locked loop # 2 generates ST-BUS clocks that
are synchronized to the extracted 8kHz output from
the T1 interface. Phase-locked loop #1 generates
the transmit T1 clock synchronized to the ST-BUS
clocks, which are
synchronized to the extracted T1
clock. This scheme will also allow the system to
operate in a loop timed mode.
With appropriate multiplexing a single D channel
processor can handle all 23 2B+D interfaces. If both
B channels on all 24 lines are going to be used then
it would be necessary to use two T1 trunk interfaces.
5. Digital Access Cross Connect System
(DACS)
The Digital Access Cross Connect System (DACS) is
a T1 switch with 127 T1 lines as input and output
plus one T1 line that is reserved for test and
maintenance purposes. A DACS is capable of
switching any input channel on any T1 trunk to any
output channel on any T1 trunk.
There are four main blocks in Figure 15, the T1
interfaces, the switch matrix, the control matrix, and
the clock generator. The digital trunk interface is
made up of the MH89760B plus the additional
components required to interface to the transmission
line. The MH89760B handles all of the required
transmit and receive data formatting, and converts
the 1.544 MHz serial stream into ST-BUS format so
that it can be routed through the MT8980
synchronous switch matrix.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MH89760BS | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| MH89761 | T1 Transmit Equalizer Advance Information |
| MH89770N | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| MH89770 | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| MH89770S | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MH89760BS | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ST-BUS⑩ FAMILY T1/ESF Framer & Interface Preliminary Information |
| MH89761 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:T1 Transmit Equalizer Advance Information |
| MH89770 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:T1/ESF Framer & Interface Preliminary Information |
| MH89770N | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:T1/ESF Framer & Interface Preliminary Information |
| MH89770S | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:T1/ESF Framer & Interface Preliminary Information |
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