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•
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
See
Table 8 "DDCH and DCHI fixed allocation map (face-to-faceplate
of the E1/T1 card) four span example" (page
configurations. The examples show the use of four E1/T1 spans as well as
the use of eight spans (using the E1/T1 expansion daughterboard). The
examples describe:
•
pure configuration of DDCH
•
pure configuration of DCHI daughterboard
•
pure onboard DCHI software configuration
•
possible mixed configuration
ATTENTION
Any other configuration of four to eight spans that follow the allocation rules are
also valid for the PRI Gateway.
For the example described in
map (face-to-faceplate of the E1/T1 card) four span example" (page
44),
Table 9 "DDCH and DCHI fixed allocation map (face-to-faceplate of
the E1/T1 card) four span example with package 418 equipped" (page
45)and
Table 10 "DDCH and DCHI fixed allocation map (face-to-faceplate
of the E1/T1 card) eight span example with package 418 equipped" (page
46)
define MSDL or DCHI in the system software as follows:
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 43
44), for samples of DCH
Table 8 "DDCH and DCHI fixed allocation
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