Nortel Media Gateway 1000E PRI Installation And Comissioning Manual page 38

38 System components
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Media Gateway 1000E PRI Gateway Installation and Commissioning
Copyright © 2007, Nortel Networks
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— the upper left daughterboard (port 1) is physically mapped to span 2
of the PRI Gateway (MGC IPE card slot 2 from a system software
perspective)
— the upper right daughterboard (port 1) is physically mapped to span
4 of the PRI Gateway (MGC IPE card slot 4 from a system software
perspective)
— the lower left daughterboard (port 1) is physically mapped to span 6
of the PRI Gateway (MGC IPE card slot 6 from a system software
perspective)
— the lower right daughterboard (port 1) is physically mapped to span
8 of the PRI Gateway (MGC IPE card slot 8 from a system software
perspective)
Because the DCHI daughterboard serves only one DCH interface (to
support the DPNSS/DASS protocol) only port 1 in the daughterboard
can be used as DCH interface. The following mapping rules apply:
— the upper left daughterboard (port 1) is mapped to span 2 of the PRI
Gateway (MGC IPE card slot 2 from a system software perspective)
— the upper right daughterboard (port 1) is mapped to span 4 of the PRI
Gateway (MGC IPE card slot 4 from a system software perspective)
— the lower left daughterboard (port 1) is mapped to span 6 of the PRI
Gateway (MGC IPE card slot 6 from a system software perspective)
— the lower right daughterboard (port 1) is mapped to span 8 of the PRI
Gateway (MGC IPE card slot 8 from a system software perspective)
DPNSS/DASS protocols can also be implemented onboard (through
a DCHI daughterboard or onboard implementation). Onboard
DPNSS/DASS interfaces (DCHI software) can be defined and
associated with up to eight E1 spans based on the following mapping
rule:
— DCHI software can be defined on any span (1, 2, 3, 4, 5, 6, 7, 8) on
the PRI Gateway. Each DCHI software span must be defined in the
system software in the MGC IPE card in the slot that is the same as
the span number. For example, span 2 of the PRI Gateway must be
defined in MGC IPE card slot 2.
The maximum usage for DCH interfaces in the PRI Gateway is:
— four spans for pure DCHI daughterboard configuration
— eight spans for pure onboard DCHI software configuration
— eight spans for pure DDCH configuration
— four to eight spans using mixed configuration
Nortel Communication Server 1000
NN43041-311 01.01 Standard
Release 5.0 30 May 2007