12
AUTOSENSING ISDN MATRIX SWITCH
4. Operation
4.1 Modes of Operation
The Autosensing ISDN Matrix Switch has three modes of operation: Mode 0,
Mode 1, and Mode 3.
M
ODE
0—M
ANUAL
• Upon powerup, it’s the default mode.
• The keypad and RS-232 are fully functional. Consult Section 4.3 for more
information.
M
ODE
1—128
KBPS
A
UTOSENSE
(1 BRI L
INE
)
• Only Input 1 is used; Input 2 and Input 3 are ignored.
• Limited keypad and RS-232 control.
• Every two seconds the switch scans the outputs in ascending order (this is also
the output priority*):
Output 1
➔
Output 2
➔
…Output 11
➔
Output 12
*Unless there’s a line busy indication on the current output, in which case it
has the highest priority and cannot be switched away.
• Under no line busy conditions, if an activation signal is detected on one of the
outputs, the switch stops scanning the rest of the outputs. If the detected
output is not the same as the current output, the switch makes the appropriate
connection. However, if a signal is not detected on any of the 12 outputs, the
switch returns to its default configuration.
M
ODE
3—384
KBPS
A
UTOSENSE
(3 BRI L
INES
)
• Limited keypad and RS-232 control.
• Every two seconds the switch scans the outputs in ascending order:
Output 1
➔
Output 2
➔
…Output 11
➔
Output 12
