Aria
-34e
Installation
Digital Key Telephone System
Aria Communications Pty Ltd.
Rev 1.3
A.C.N. 090 723 925
4-21
Figure 15. PRI BOARD
4.5.17 ISDN STIB (S/T INTERFACE BOARD) INSTALLATION
The STIB provides 2 ports of BRI (Basic Rate Interface) format „S‟ and „T‟ mode interface. This
board is developed to the I-CTR3[4] European Technical Standards for Basic Rate Access. The
operating mode selection is performed by setting the shorting pins and DIP switches to the
required position. When operating in „S‟, this is used for connecting to an ISDN terminal and the
„T‟ mode is used for connect the ISDN CO line. The mode selection method is shown in the
following table. When using this board, the PLLU2 board must be installed on the MBU. If
more than two ISDN boards are installed, special cable should be used for clock signal control
between multiple boards. Refer to [Clock Control Cable Wiring] section.
Note: The STIB board should be installed in slot #4~7 and DIP switch #2 of SW1 must be ON.
LINE
Connector & Switch
Mode
Selection Method
LINE1
CONN1, CONN3
T
move short pins to „T‟ position
move SW2 to „T‟ position
SW2
S
move short pins to „S‟ position
move SW2 to „S‟ position
LINE2
CONN2, CONN4
T
move short pins to „T‟ position
move SW2 to „T‟ position
SW3
S
move short pins to „S‟ position
move SW2 to „S‟ position
