Nortel Networks BCM1000 Benutzerhandbuch

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Chapter 7 Setting media bay module DIP switches
101
Installation and Maintenance Guide
ASM 8/GASM8 switch settings
For systems running software prior to BCM 3.0, only two ASM units can share a DS30 bus, using 
offset 0, 1 or 2. BCM 3.0 software introduced the concept of double density, which allows you to 
install an ASM8/GASM8 on all four offsets on DS30 02 to 05. DS30 06 and 07 remain in single 
density mode for the default Partial Double Density (PDD) system. This means that only two 
ASM8/GASM8 modules would be supported on these DS30 blocks unless the system is changed 
to Full Double Density (FDD). GASM8 modules can also support firmware download on systems 
running BCM 3.6 and newer software. Refer to 
DN numbering sequence: A DS30 bus set to double density has a total of 32 lines available for 
telephones. On systems upgraded from BCM 2.5/2.5.1, the first 16 lines on the bus do not number 
consecutively with the second 16 lines on the bus. On systems that were new for BCM 3.0, the 32 
lines on the bus do number consecutively.
 shows the switch settings for each DS30 bus and the dialing numbers (DNs) assigned to 
each DS30 bus. The table shows settings for a system in FDD. For PDD systems, where DS30 06 
and 07 are single density, only two modules can be installed on either bus.
Table 20   ASM8 settings for upgraded 2.5 systems and new 3.0 systems 
Select 
bus# 
Select 
offset 
Enter these switch 
settings
To assign these DNs
2
 Custom DN 
range
1
2
3
4
5
6
2.5 system 
upgraded to 3.0
New 3.0 system
02
0
on on on on on on
221-228
221-228
1
on on
on on on
228-236
228-236
off
2
on
on on on on
377-384
237-244
off
3
on
on on on
385-392
245-252
off off
03
0
on on on on on
237-244
253-260
off
1
on on
on on
245-252
261-268
off
off
2
on
on on on
393-400
269-275
off
off
3
on
on on
401-408
276-284
off off
off
04
0
on on on on
on
253-260
285-292
off
1
on on
on
on
261-268
293-300
off
off
2
on
on on
on
409-416
301-308
off
off
3
on
on
on
417-424
309-316
off off
off