參數(shù)資料
型號: PSF21911
廠商: SIEMENS A G
元件分類: 數(shù)字傳輸電路
英文描述: ISDN Echocancellation Circuit for Terminal Applications IEC-Q TE
中文描述: DATACOM, ISDN ECHO CANCELLER
文件頁數(shù): 55/164頁
文件大?。?/td> 1401K
代理商: PSF21911
PSB 21911
PSF 21911
U-Transceiver
Semiconductor Group
55
11.97
Table 10
1 0 0 0
NEBE
Near-end block error
. Transmission errors occurred
in the direction LT –> NT.
Far- and near-end block error
. Transmission errors
were observed in LT –> NT direction.
NORM
Normal
. Return to normal (idle) state. This command
initiates no U-transceiver action.
1 1 0 0
FNBE
1 1 1 1
Mon-1 M-Bit Commands
M-Bit
MMMM (Bin) D
1 x x 0
Direction
Function
Maintenance Bits
NT-test mode
. After reception of this command the
NTM-bit of the U-interface is set active (= 0) in order to
inform the exchange that the NT is involved in testing
and not available for transparent transmission. This
message needs to be sent out by the downstream
device if the terminal requests tests which prevent
transparent transmission (e.g. loops B1, B2, D).
NORM
Normal
sets back the NTM-bit to 1. No other action
taken.
U
NTM
1 1 1 1
Table 9
Mon-1 S/Q-Channel Commands and Indications
(cont’d)
S/Q
SSSS (Bin)
Direction
D
Function
S/Q-Channel
U
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