Specifications

Watson-TDM-Manual-W.doc
Version 2.0-01
Watson TDM
Operating Manual
Revision: 2008-02-07 3-19
In framed and fractional E1 mapping modes the treatment of TS0 (synchroniza-
tion timeslot) and TS16 (signaling timeslot) is configurable with the MP monitor
command:
Mapping
Mode (MP x)
TS0 treatment TS16 treatment
MP 0
TS0 towards user interface gener-
ated by modem and not transported
over the DSL
TS16 towards user interface
generated by modem and not
transported over DSL if less than
16 timeslots are configured.
TS16 transported over DSL if 16
or more timeslots are configured
MP 1
TS0 transported over DSL TS16 towards user interface
generated by modem and not
transported over DSL if less than
16 timeslots are configured.
TS16 transported over DSL if 16
or more timeslots are configured
MP 2
TS0 towards user interface gener-
ated by modem and not transported
over the DSL
TS16 transported over DSL
MP 3
TS0 transported over DSL TS16 transported over DSL
MP 4
TS0 towards user interface gener-
ated by modem and not transported
over the DSL
TS16 generated by modem and
not transported over DSL
MP 5
TS0 transported over DSL TS16 generated by modem and
not transported over DSL
Table 3-6:TS0/TS16 options
If TS0 or TS16 are generated by the modem and not transported over the DSL
they do not take up DSL bandwidth. This allows to reduce the DSL linerate and
increase the reach correspondingly.
If TS0 is generated by the modem then the SA-Bits are set to 1 and the A-Bit is
set to 0. The Si – Bit is set to 1 if CRC4 checking is off.
If TS16 is generated by the modem then an all-1 pattern (11111111) is transmit-
ted.
3.5.2 nx64 mappings
Application
User interfaces
Mapping rule
TS 101 524
nx64, 178 ≥ n ≥ 32
nx64 – nx64
Unaligned D2048S
nx64, n < 32
nx64 – nx64
Aligned D2048S
Table 3-7: nx64 mappings