Telex TDI, Technical Manual, Page: 10 / 22

10
3.
Phone : A standard RJ-11 connects the PSTN phone line to the TDI. All telephone signaling and audio is present on
the Tip and Ring pair.
Equipment Connection and Setup
TDI Setup
There are no internal jumpers or adjustments in the TDI enclosure.
IP-223 Setup
Jumper Settings
Pin Description
1
2
3 RING
4 TIP
5
6
Jumper Position Jumper Function
“B”
Balanced 600 Ohm
Line 1: J3, J9, J11, J16, J21
Line 2: J25, J28, J29, J19, J20
“A”
600 Ohm Rx Termination
Line 1: J14
Line 2: J24
“A”
DIGI I/O Pull Up Resistors (5V)
Line 1: J8
Line 2: J30
“B”
4-Wire Interface
Line 1: J33, J34
Line 2: J5, J6
“A”
Line 1: J35
Line 2: J26
RS232 Serial Data