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The following rules and recommendations apply to the span usage of the
PRI Gateway and for the D-channels and B-channels as well:
•
Each PRI Gateway span can be configured as E1 or T1.
•
DCHI supporting DPNSS/DASS protocol can be used with E1 spans
only and not with T1s.
•
DCHI daughterboards that support the DPNSS/DASS protocol can be
used only on spans 2, 4, 6, and 8. Spans 1, 3, 5 and 7 do not support
DCHI daughterboard DPNSS/DASS.
•
The onboard DPNSS/DASS protocol can be used on all spans (1, 2,
3, 4, 5, 6, 7 and 8).
•
DDCH daughterboard port 1 can be used only on spans 2, 4, 6 and 8.
•
DDCH daughterboard port 0 can be used only on spans 1, 3, 5 and 7.
•
Each span can be used for B-channels (BCH) solely without any
attached DCH daughterboard.
•
With the use of a DCHI daughterboard, the even span can be used
only as a DCH interface. However, the odd span can be used for BCH
served by a DCH interface that is controlled by another DCH span.
•
With the use of a DDCH daughterboard, a DCH interface can be
defined on any span. However, if one of the spans is not used for a
DCH interface, it can be used for BCHs served by a DCH interface that
is controlled by another DCH span.
•
With the use of onboard DPNSS/DASS protocol, a DCH interface can
be defined on any span. However, if one of the spans is not used for a
DCH interface, it can be used for BCHs served by a DCH interface that
is controlled by another DDCH span.
See
Table 11 "DCH interfaces (including DPNSS/DASS) and B-channel
usage of the E1/T1 card" (page
•
BCH indicates B-channel is used in the span.
•
DDCH0 indicates PRI D-channel of port 0 in the DDCH daughterboard
is used in the span.
•
DDCH1 indicates PRI D-channel of the port 1 in the DDCH
daughterboard is used in the span
•
DCHI indicates that the DPNSS/DASS D-channel is using the DCHI
daughterboard.
•
DCHI-SW indicates that the DPNSS/DASS D-channel is using onboard
implementation.
Nortel Communication Server 1000
Media Gateway 1000E PRI Gateway Installation and Commissioning
NN43041-311 04.01 4 June 2010
Copyright © 2007-2010 Nortel Networks. All Rights Reserved.
D-channel daughterboards 47
48). In this table:
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