Digi 90031300 Manual Do Utilizador
Software Installation
47
Configuring via the Serial Port Interface
The serial port on the T1 Modem bank can be used to display and modify the T1 configuration. It can also be used to
display the installed equipment list, the modem on/off-hook status, and the alarm status. Thus there are 5 basic
functions provided by the interface:
display the installed equipment list, the modem on/off-hook status, and the alarm status. Thus there are 5 basic
functions provided by the interface:
1. T1 interface configuration display and modification.
2. Alarm status display.
3. Modem signaling status display.
4. BIOS/NVRAM
information
5. Installed equipment information
The T1 modem bank can be configured by a user via a terminal attached to serial port on the modem bank’s front
panel. This configuration is limited to the following T1 interface parameters:
panel. This configuration is limited to the following T1 interface parameters:
1. Frame format (D4/SF or ESF)
2. Line Coding (AMI or B8ZS)
3. Jitter attenuation path
4. T1 Robbed-bit signaling protocol
5. Span type (Short- or Long-haul)
There are also some context-dependent parameters that depend on the value chosen for the “Span type” parameter.
These context parameters are “Line Build Out”, “Receiver Gain Limit” and “Line Length”.
These context parameters are “Line Build Out”, “Receiver Gain Limit” and “Line Length”.
To use the interface the user must provide a terminal and connect it to the serial port marked “terminal” on the
modem bank’s front panel. The cable pinout should follow the standard PC DB-9 serial port pinout.
modem bank’s front panel. The cable pinout should follow the standard PC DB-9 serial port pinout.
The interface also implements the XON/XOFF software flow control protocol. <Ctrl-S> may be typed at the
attached terminal to interrupt any output from the modem bank to the terminal, and <Ctrl-Q> will cause any paused
transmission to resume. The user can use the backspace/erase key to perform limited command line editing when
entering commands.
attached terminal to interrupt any output from the modem bank to the terminal, and <Ctrl-Q> will cause any paused
transmission to resume. The user can use the backspace/erase key to perform limited command line editing when
entering commands.
After the Modem bank is powered up and the system firmware downloaded, typically by a host-system OS driver,
the modem bank’s current T1 configuration will be displayed along with a description of commands that the user
may enter.
the modem bank’s current T1 configuration will be displayed along with a description of commands that the user
may enter.