Karel MS128, Installation & Maintenance Manual

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Karel MS128 Installation & Maintenance Guide
Edition 3.2
54
If there are several DSS modules connected to the same extension, each extra
DSS module can be connected to the previous one as explained above.
Figure B-10
•
NUMBER OF TELEPHONES & DISTANCE TO THE SYSTEM:
Please also note that :
1) OP48(-H) Consoles, LT48(-H) Feature Phones and DSS80 / DSS40 Direct
Station Select Modules can be connected to the first 16 extensions of the
system.
2) The total number of OP48(-H) Consoles, LT48(-H) Feature Phones and
DSS80 / DSS40 Direct Station Select Modules connected to the system
must not exceed 10.
If the Data / 12 VDC / GND and A / B (ring / tip) wires of a console or a feature
phone are carried separately as described in the “Cabling” part above, the
console or feature phone can be installed more than 5 meters away from the
system.
In such a case, the maximum distance between a single feature phone, console
or DSS module and the system can be 250 meters, if the wiring is made with
ordinary wires.
However, if more than one set will be installed to the system and if the Data / 12
VDC / GND wires of the sets are wired in parallel as described in the “Cabling”
part above, the maximum distance of 250 meters decreases proportionally. For
example, if 10 LT48 Feature Phones are connected to the system in this way,
the distance between the system and the LT48 Feature Phones cannot exceed
25 meters.