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G.SHDSL NTU User Manual V0.03
81
STU-C (E1)
STU-R
(V.35)
DTE
DTE
V.35
E1
SHDSL
Frame N x 64 (N=1~32)
STU-C (V.35)
STU-R (E1)
DTE
DTE
E1
V.35
SHDSL
Frame N x 64 (N=1~32)
Time slot, N value, is place of data in the frame. Time Slot Number 1~31 (N=1~31) is Fractional E1 and Time Slot
Number 32 (N=32) is unframed.
Fractional E1
For fractional E1( FE1), the data rate is from 64k, N=1, to 1984k, N=31, according to the E1 frame.
If the E1 frame is PCM31(FAS) or PCM31C(FAS+CRC4), there have 1~31 available time slot for used data.
For example, if the data rate of SHDSL line set to be 512k, the time slot number is 8 and first time slot number is 1.
The frame is shown as below.
FAS
Data
Data
Data
Data
Data
Data
Data
Data
0
1
2
3
4
5
6
7
8
31
Time Slot
64k
64k
64k
64k
64k
64k
64k
64k
64k
64k
1408k
9 ~ 30
The First Time Slot setting of FAS and FAS+ CRC4 (PCM31 and PCM31C)have to follow the rule:
RULE
First Time Slot
≦
31- Time Slot Number
First Time Slot
≦
31- Time Slot Number
Содержание G.SHDSL NTU
Страница 1: ...G SHDSL NTU User Manual Version 0 03...
Страница 9: ...G SHDSL NTU User Manual V0 03 8 1 4 Applications...
Страница 18: ...G SHDSL NTU User Manual V0 03 17 2 3 1 For E1 Interface AC power input version DC power input version...
Страница 19: ...G SHDSL NTU User Manual V0 03 18 2 3 2 For Serial Interface AC power input version DC power input version...
Страница 20: ...G SHDSL NTU User Manual V0 03 19 2 3 3 For Ethernet Interface AC power input version DC power input version...
Страница 30: ...G SHDSL NTU User Manual V0 03 29 E1 Interface...
Страница 36: ...G SHDSL NTU User Manual V0 03 35 3 5 1 Sub Menu tree for SETUP E1 Interface SYSTEM SETUP SETUP E1 SETUP E1...
Страница 52: ...G SHDSL NTU User Manual V0 03 51...
Страница 55: ...G SHDSL NTU User Manual V0 03 54...
Страница 116: ...G SHDSL NTU User Manual V0 03 115 For Ethernet interface model For E1 and Serial interface model...
Страница 117: ...G SHDSL NTU User Manual V0 03 116 For E1 and Ethernet interface model...
Страница 119: ...G SHDSL NTU User Manual V0 03 118 For Serial interface model For Ethernet interface model...
Страница 120: ...G SHDSL NTU User Manual V0 03 119 For E1 and Serial interface model For E1 and Ethernet interface model...
Страница 137: ...G SHDSL NTU User Manual V0 03 136 The front view of DB 25 F Serial interface connector on rear panel...