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46 System components
Table 10
DDCH and DCHI fixed allocation map (face-to-faceplate of the E1/T1 card) eight span example
with package 418 equipped
MGC IPE
card (slot)
Pure configuration
number
of DDCH (NTBK51A
representing
A/NTBK51CA)
the E1/T1
8 DDCH interfaces
span in
with Port 0 and 1
LD 17
enabled
1
Upper left DDCH
2
Upper left DDCH
3
Upper right DDCH
4
Upper right DDCH
5
Lower left DDCH
6
Lower left DDCH
7
Lower right DDCH
8
Lower right DDCH
ATTENTION
For the PRI Gateway, the following software package for the functionality that
allows the use of port 0 or port 1 is provided in CS 1000 Extended Media
Gateway PRI (MGP) package 418
PRI Gateway span usage
The PRI Gateway allows flexible configuration DCH interface and
B-channels on the E1/T1 card.
For some interface types, the PRI Gateway also supports a nB+D
feature by having a single D-channel interface (attached with DDCH
daughterboard) support several E1/T1 spans. Therefore, it is possible
that one span is not configured with any DCH interface but is used for
B-channels which are served by D-channel interface defined in another
span.
Media Gateway 1000E PRI Gateway Installation and Commissioning
Pure configuration
of onboard
DPNSS/DASS
(DCHI)
8 DCHI interfaces
with Port 1 enabled
DCHI Port 1
Port 0
DCHI Port 1
Port 1
DCHI Port 1
Port 0
DCHI Port 1
Port 1
DCHI Port 1
Port 0
DCHI Port 1
Port 1
DCHI Port 1
Port 0
DCHI Port 1
Port 1
Nortel Communication Server 1000
NN43041-311 04.01 4 June 2010
Copyright © 2007-2010 Nortel Networks. All Rights Reserved.
Possible mixed
configuration
PRI Ga
4 DDCH Interfaces
teway
+ 4 DCHI interface
E1/T1 span
s
number
Upper left DDCH
Port 0
Upper left DDCH
Port 1
Upper right DDCH
Port 0
Upper right DDCH
Port 1
DCHI Port 1
DCHI Port 1
DCHI Port 1
DCHI Port 1
1
2
3
4
5
6
7
8
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