psf21911 ETC-unknow, psf21911 Datasheet - Page 55

• Manufacturer Part Number: psf21911
• Description: Isdn Echocancellation Circuit Terminal Applications Iec-q
• Manufacturer: ETC-unknow

Table 9
S/Q
SSSS (Bin)
1 0 0 0
1 1 0 0
1 1 1 1
Table 10
M-Bit
MMMM (Bin) D
1 x x 0
1 1 1 1
Semiconductor Group
Mon-1 S/Q-Channel Commands and Indications (cont’d)
Mon-1 M-Bit Commands
Direction
D
NEBE
FNBE
Direction
U
NORM Normal. Return to normal (idle) state. This command
U
NTM
NORM Normal sets back the NTM-bit to 1. No other action
Function
S/Q-Channel
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.
initiates no U-transceiver action.
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).
taken.
55
U-Transceiver
PSB 21911
PSF 21911
11.97