28
DS1083-135
Connection of a door phone riser with electric nodes or in-out connection for a door phone riser
Bca
A
Door phone riser with electric nodes
N
2
1
Bcb
Door phone riser with in-out connection
A = distance between the node and the door phone
Bca = distance between the device from which the riser is derived and the most distant node
Bcb = distance between the device from which the backbone is derived and the furthest door phone
Cable
Number of apartment stations
according to the device from which
the riser is derived
distance
1083/23
1083/53 or /50
A
Bcx
A+Bc
2Voice cable Ref. 1083/92
80
56
50m
600m 600m
2Voice cable Ref. 1083/94
80
56
50m
375m 375m
Ø 0,6mm telephone pair without sheath
64
56
50m
300m 300m
CAT5 UTP (one twisted pair)
64
56
50m
200m 200m
HVV05-F 1,5 mm
2
rubber covered
80
56
50m
300m 300m
7057/235 Urmet cable (blue/red)
64
56
50m
300m 300m
1mm
2
section single cable
32
32
50m
300m 300m
For system extensions and connection of street side branch and call stations see the next
paragraphs.
CONNECTION OF CALL STATIONS
This chapter describes different connection modes of door phone call stations in systems with only one
riser column of door phones.
The following indications are valid for audio only systems; these distances can not be applied if
even one video door phone device is present (video door entrance panel or video door phone).
Column with one door phone call station
Ax+Bc
C
riser
door phone
call station
2Voice column
power supply unit
C = distance between the power supply and the call station
For connection and distances of the riser, see the paragraph “Door phone risers connection”
