CBUPRI/E1 SBUPRI-23/30 User Manual
80-14005000-01
2–4
2.4 Switches and Jumpers
All switches and jumpers must only be changed by a competent
engineer.
2.4.1 8 Way DIL Switch
DIL
Setting
CBUPRI/E1 &
SBUPRI-30
SBUPRI-23
Pole 1
OFF
Reserved (F)
Reserved (F)
Pole 2
OFF
Multiframe ISDN
Operation - CRC4
checking (F)
Extended Super-frame
(ESF) - CRC6 checking
(F)
ON
Double Frame ISDN
Operation - no CRC
checking
D4 (12 frame Multi-
frame) - no CRC
checking
Pole 3
OFF
Normal Operation (F)
Normal Operation (F)
Pole 4
Not used.
-
-
ON
Factory Default. (It must subsequently be turned
OFF again after performing a factory default, to
return the SBUPRI back to operation)
Poles 5-7
Product variant - see section
2.4.1.1
Pole 8
Not used.
‘F’ is the factory setting.
Different operational modes or product “variants” can be selected via p.c.b.
D.I.L. switches on the pcb, allowing several different countries and variants
to use the same software set.
D.I.L. switch S1 poles 5, 6, and 7 define the variant in binary notation.
Pole 5 = L.S.B., pole 7 = M.S.B., (L.S.B.=Least Significant Bit, M.S.B.=Most
Significant Bit).
Software variants are available and selectable as follows:-