16(57)
Date
Rev
Documentnumber
Prepared
Doc respons/Approved
Checked
File/Reference
1999-07-15
V
1531-BDV 113 08 Uen
INSTALLATION INSTRUCTION
Subject responsible
Earth connection on BTU-A2 (Austria only)
Some markets require an earth connection of the in-
coming PTT earth (functional earth) to the exchange.
This is provided on the connector installed above the
PFC circuit connector on pins A22, A24, C22 and C24.
Use an extra Krone bar to connect the PTT earth wires
to the wires going to the board connector.
5.6
BTU-C (ROF 157 5111/_)
The BTU-C (ROF 1575 111/1) features eight incoming
trunk lines with DID. The first four individuals can also
be used for outgoing traffic.
Connection field 4
A
C
18
20
22
24
Connection of
Connection to
ELU-A board
26
28
30
32
Connection to
ELU-A board
Connection
A
C
to analogue
analogue telephone
Not always mounted
(market-dependent)
PFa0
PFb0
PFb1
PFa1
telephone(s)
4
On the BTU-A2 the
bottom half of this
connector is used
to connect to PTT
signalling ground
18
20
22
24
a0
b0
b1
a1
a0
b0
b1
a1
PFa2
PFb2
PFb3
PFa3
Only mounted if the BTU-A
has 4 PFC circuits (market
dependent).
This connector is used
for PFC circuits on the
BTU-A2
power failure (field 4)
RED
YELLOW
GREEN
PFa0
PFb0
a0
b0
The index number
refers to the individual
on the board
trunk lines (field 6)
La_0
Lb_0
La_2
Lb_2
La_1
Lb_1
La_3
Lb_3
La_5
Lb_5
La_7
Lb_7
La_4
Lb_4
La_6
Lb_6
A C
A C
Connection field 4 and 6
Connection of
analogue telephone
Connection to
ELU-A board
