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): 19/72頁
文件大?。?/td> 1267K
代理商: Q6701-H6481
PEB 2084
Semiconductor Group
19
Figure 7
Multiplexed Frame Structure of the IOM-2 Interface in LT Mode with 2048 kbit/s
Data Rate
Each IOM ISDN channel consists of a total of 32 bits, or four octets:
B1 (8 bits) + B2 (8 bits) + D (2 bits) plus 14 bits for intercommunication.
Two 8-bit B1 and B2 channels for voice and data communication with a data rate of
64 kbit/s each,
One 8-bit monitor channel for transferring maintenance information,
One 2-bit D-channel for data transfer (e.g. signalling) with a data rate of 16 kbit/s
Four command/indication (C/I) bits for controlling layer-1 functions.
Two bits for handling the monitor channel: MR an MX (hand shake control).
The user data rate is 144 kbit/s (B1 + B2 + D).
Monitor Channels
The monitor channel is used to convey message oriented local functions such as
software programming or access to internal registers via a layer-2 controller (ICC,
ELIC,…). There is a defined handshake procedure between the monitor channel
transmitter and the receiver in order to ensure a safe data transfer over the IOM-2
interface.
8 bits
8 bits
8 bits
2
4 bits
1
1
B1 channel
B2 channel
Monitor channel
D ch.
Command/
Indication
MR
MX
ITD04319
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH7
CH6
CH5
CH4
CH3
CH2
CH1
CH0
B1
B2
MONITOR
D
C/I
M M
R X
FSC
DCL
DU
DD
CH0
CH0
s
μ
125
R
IOM
R
IOM
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