ascom
Ascotel 2025/2045/2065
HBT_20321104_04/B0_en
Connecting the PBX
4.33
AD2 Interface
Never install the Y bus by interrupting it at the storey distribution board. Only use
commercial adapters to connect e.g. two Office system terminals to the same ter-
minal socket-outlet.
The max. length of an AD2 connection via secondary, tertiary and patch cables
must not exceed 100 m in compliance with UGV guidelines. Both patch cables
together can be a max. 10 m.
S-bus Crossover
On the S-bus user-network interface the pairs c/d and e/f are wired in a different
sequence on an RJ45 connector than on the UBC / ISDN network side.
Observe the following installation rules:
• Always terminate the bus extremity with 2 x 100
W
(0.25 W, 5%)!
• Carry out the necessary crossover on the subscriber side of the PBX.
• If the subscriber cabling is integrated into the installation of a universal building
cable installation (UBC), cross over the S bus as shown in
Fig. 4.26:
S-bus crossover in the universal building cable installation
NT
f
3
4
5
6
c
d
e
f
T
S
c d e
f c d e
RJ45
UBC / ISDN network cabling
S-bus cabling
RJ45
Terminal
UBC
UBC
PBX
c
3
4
5
6
f
e
d
f
c
d
e
c
f
e
d
haz0317aaenb0
Содержание Ascotel 2025
Страница 1: ...Ascotel ISDN telecommunications system from ascom Ascotel 2025 2045 2065 System Manual...
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Страница 109: ...ascom Ascotel 2025 2045 2065 1 54 Networking the Systems HBT_20321104_01 B0_en...
Страница 167: ...ascom Ascotel 2025 2045 2065 1 112 Ascotel Information Management System AIMS HBT_20321104_01 B0_en...
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Страница 291: ...ascom Ascotel 2025 2045 2065 2 114 Routing Elements HBT_20321104_02 B0_en...
Страница 397: ...ascom Ascotel 2025 2045 2065 2 220 Data Services HBT_20321104_02 B0_en...
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Страница 875: ...ascom Ascotel 2025 2045 2065 4 104 Cabling Interfaces HBT_20321104_04 B0_en...
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Страница 1019: ...ascom Ascotel 2025 2045 2065 7 20 Data Maintenance HBT_20321104_07 B0_en...
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Страница 1095: ...ascom Ascotel 2025 2045 2065 8 6 Systematic Designation System HBT_20321104_08 B0_en...
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Страница 1123: ...ascom Ascotel 2025 2045 2065 9 6 Abbreviations HBT_20321104_09 B0_en...
Страница 1135: ...ascom Ascotel 2025 2045 2065 9 18 Glossary HBT_20321104_09 B0_en...