參數(shù)資料
型號: Q6701-H6481
廠商: SIEMENS AG
英文描述: Quadruple Transceiver for S/T Interface QUAT-S
中文描述: 四聯(lián)收發(fā)器的S / T接口葛- ?
文件頁數(shù): 17/72頁
文件大?。?/td> 1267K
代理商: Q6701-H6481
PEB 2084
Semiconductor Group
17
2.2.2
The PEB 2084, QUAT-S, is equipped with a digital ISDN Oriented Modular (IOM-2)
interface, for interconnection with other telecommunication ICs, such as IDEC
(PEB 2075), EPIC (PEB 2055) and ELIC (PEB 20550). EPIC and ELIC represent the
first switching stage towards the exchange system.
IOM
-2 System Interface
Figure 6
System Integration, IOM
-2 Interface
Interface Signals
The IOM-2 interface is a four-wire serial interface which comprises two data lines and
two clock lines for synchronization. Refer to
figure 6
.
Data is carried over Data Upstream (DU) and Data Downstream (DD) lines. The
downstream and upstream directions are always seen with respect to the exchange.
Downstream refers to the information flow from the central exchange via PBX to the
subscriber and upstream vice versa.
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