Installation guide

SZ-DOC-W5-1.pdf LTU/NTU
Version: 1.5 Operating Manual
25 Revision: 2002-09-10
3.5.4 E1 to E1 & nx64 kbit/s Multiservice Time Slot Mapping
When both E1 and nx64 kbit/s interface are equipped, they can be used concurrently. The
available DSL bandwidth is then shared between the m time slots of the E1 interface and the n
time slots of the nx64 kbit/s interface.
Figure 3-12: Time Slot mapping: 16 nx64 Time Slots and 16 frE1 Time Slots to E1
3.5.5 Time Slot Mapping Overview
Application Mapping Rules Mode 0 Mode 1 Mode 2 Mode 3
transparent
E1-E1
Unaligned D2048S mode,
arbitrarily but fixed
mapping to DSL
framed
E1-E1
Aligned D2048S mode
framed E1-
frE1
Aligned fractional D2048S
mode
TS0 not
transmitted,
TS16 only if frE1
>= 16
TS0 always
transmitted,
TS16 only if frE1
> 16
TS0 not
transmitted,
TS16 always
transmitted
TS0 & TS16
always
transmitted
FrE1 Time Slots at User Interface 2, Slave Side
TS
0
TS
1
TS
2
…
.
TS
31
TS
17
…
.
TS
16
TS
18
TS
3
E1 Time Slots at User Interface, Master Side
TS
0
TS
1
TS
2
…
.
TS
31
TS
17
…
.
TS
16
TS
18
TS
3
nx64 Time Slots at User Interface 1, Slave Side
N
1
N
2
N
3
…
.
N
36
N
17
…
.
N
16
N
18
N
4
DSL Payload Sub-Block
B
1
B
2
B
3
…
.
B
n
B
17
…
.
B
16
B
18
B
4