Loop-Start Lines (Figure 5-1); Connecting Loop-Start Lines - Samsung DCS 816 Installation Manual

SAMSUNG
DCS-816

5.2 Loop-Start Lines (Figure 5-1)

The DCS-816 system requires MDF connection for analogue trunk (loop-start) lines. The basic
KSU itself is equipped with two analogue trunk lines. Additionally, a 4TRK or an 8TRK card can be
installed in the trunk expansion slot. All connections for loop-start lines can be done through the
champ connector on the base board. See Figure 2-3 and refer to section 2.5 (MDF Cabling).
Use one pair twisted wires and connect each loop-start C.O. line to the trunk port you choose via
the Champ connector on the base board.
25 PAIR CABLE WITH FEMALE CONNECTOR TO THE BASE CHAMP CONNECTOR
PSTN (C.O.)
Loop-Start
Lines

CONNECTING LOOP-START LINES

CHAMP CONNECTION
PIN COLOUR
26/ 1 W-BL/ BL-W
27/ 2 W-O/ O-W
28/ 3 W-GR/ GR-W
29/ 4 W-BR/ BR-W
30/ 5 W-S/ S-W
31/ 6 R-BL/ BL-R
32/ 7 R-O/ O-R
33/ 8 R-GR/ GR-R
34/ 9 R-BR/ BR-R
35/10 R-S/ S-R
NO POLARITY
2 LOOP-START LINES TO THE BASIC KSU.
THESE LINES WILL BE TRANSFERRED TO STN
15 AND STN 16 IN CASE OF POWER FAILURE
4 OR 8 ADDITIONAL LOOP-START LINES IF A
4TRK OR AN 8TRK CARD IS INSTALLED
CIRCUITS / FUNCTIONS
T/R, 1
T/R, 2
T/R, 1
T/R, 2
T/R, 3
T/R, 4
T/R, 5
T/R, 6
T/R, 7
T/R, 8
5-2
Installation Manual
st
Trunk on base board
nd
Trunk on base board
st
Trunk on 4/8TRK
nd
Trunk on 4/8TRK
rd
Trunk on 4/8TRK
th
Trunk on 4/8TRK
th
Trunk on 8TRK
th
Trunk on 8TRK
th
Trunk on 8TRK
th
Trunk on 8TRK
FIGURE 5-1