Specifications

Watson TDM
Operating Manual
Watson-TDM-Manual-W.doc
Version 2.0-01
3-24
Revision: 2008-02-07
In the configuration shown in Figure 3-18 the following mapping rules are active:
E1 interface 1 TS0 unused, i. e. TS0 towards the E1 interface is gen-
erated by the modem and not transported over the
DSL
E1 interface 1 TS 1 - 3 transported over DSL link A, channels 1 – 3
E1 interface 1, TS 4 - 10 transported over DSL link A, channels 1 – 11
E1 interface 1 TS 11 - 20 transported over DSL link B, channels 1 – 10
E1 interface 1 TS 21 - 26 transported over DSL link C, channels 8 – 13
E1 interface 1 TS 27 transported over DSL link D, channel 1
E1 interface 1 TS 28 transported over DSL link D, channel 3
E1 interface 1 TS 29 transported over DSL link D, channel 5
E1 interface 1 TS 30 transported over DSL link D, channel 7
E1 interface 1 TS 27 transported over DSL link A, channel 12
The E1 interface 2 and all other DSL channels are unused. This is indicated by
the hyphen character –
The MP configuration screen also displays how the remote modem maps DSL
channels to its local E1 or nx64 interface. This is indicated on the lines marked
with -> (below A, B, C and D) with the following symbols:
1 DSL channel mapped to the corresponding E1 timeslot
N DSL channel mapped to the nx64 user interface
0 channel not mapped to the E1 user interface
Note that the multipoint configuration will not change any timeslot mapping on the
remote modem. Proper configuration of both multipoint and remote mapping must
be done to avoid any mapping conflicts or ambiguities. The symbol ! at the be-
ginning of a -> line indicates a conflict on the time slot mapping between local
and remote modem.
Notes:
• The E1 timeslot mapping characters are shown in lowercase (a .. d) if a time-
slot has been associated with a DSL link, but its channel on that link has not
yet been defined. Timeslots which are associated with a channel on the DSL
link are displayed in uppercase (A .. D) in the E1 timeslot mapping.
• If you select more timeslots in the DSL timeslot mapping than are currently
mapped to the link by the E1 timeslot mapping, superfluous timeslots will not
be enabled. Also timeslots which are outside of the range used by the line rate
configured will not be enabled.
• TS0 is used for E1 framing (FAS/NFAS) and is normally generated at the re-
mote modem. TS0 on the DSL links can only be used for transmission of TS0
from one E1 interface at the multipoint modem.