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: 35/83页
文件大小: 1168K
代理商: PEF80902
PEF 80902
Functional Description
Data Sheet
27
2001-11-12
Table 11
No.
1.
2.3.7.4
Inputs to the U-Transceiver
C/I-Commands
AI
Activation Indication
The downstream device issues this indication to announce that layer 1 is
available. The U-transceiver in turn informs the LT side by transmitting U3.
AR
Activation Request
The U-transceiver is requested to start the activation process (if not already
done) by sending the wake-up signal U1W.
DI
Deactivation Indication
This indication is used during a deactivation procedure to inform the U-
transceiver that it may enter the
Deactivated
(power-down) state.
DT
Data Through Test Mode
This unconditional command is used for test purposes only and forces the U-
transceiver into state
Transparent
.
Differences to the former NT-SM of the IEC-T/NTC-T
State/ Signal
Change
State
Deact.
Request Rec.
-
Pend. Deactivation 1
-
Reset
State
-
Test
State
State
Loss of
Framing
results in different behavior
in state
Transparent
,
no return to normal
transmission possible after
detection of LOF
C/I-code LTD
new inserted
State
Power Down
Deactivated
State
Data
Transmission
Timer
variables
introduced
Comment
simplifies SM implementation
split into 3 states
2.
new inserted,
compliance to ETSI TS 102 080,
corresponds to state NT1.10
3.
4.
renamed to state
for consistency reasons to 2B1Q
5.
renamed to state
Transparent
6.
Name Duration
see
Table 12
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