参数资料
型号: PEF80902
厂商: INFINEON TECHNOLOGIES AG
英文描述: 4B3T Second Gen. Modular ISDN NT(Ordinary)
中文描述: 4B3T二将军模块化综合业务数字网新台币(普通)
文件页数: 43/83页
文件大小: 1168K
代理商: PEF80902
PEF 80902
Functional Description
Data Sheet
35
2001-11-12
2.4.3
Data Transfer between IOM -2 and S
0
In the state G3 (Activated) the B1, B2 and D bits are transferred transparently from the
S/T to the IOM -2 interface and vice versa. In all other states
1
s are transmitted to the
IOM -2 interface.
2.4.4
Loopback 2
C/I commands ARL and AIL close the analog loop as close to the S-interface as possible.
ETSI refers to this loop under
loopback 2
. ETSI requires, that B1, B2 and D channels
have the same propagation delay when being looped back.
The D-channel Echo bit is set to bin. 0 during an analog loopback (i.e. loopback 2). The
loop is transparent.
Note: After C/I-code AIL has been recognized by the S-transceiver, zeros are looped
back in the B and D-channels (DU) for four frames.
2.4.5
State Machine
The state diagram notation is given in
Figure 11
.
The information contained in the state diagrams are:
state name
Signal received from the line interface (INFO)
Signal transmitted to the line interface (INFO)
C/I code received (commands)
C/I code transmitted (indications)
transition criteria
The transition criteria are grouped into:
C/I commands
Signals received from the line interface (INFOs)
Reset
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