Mi Pulse/Mi Level And Mi Invert/Normal Settings; Kbd Enable/Disable; Switch A/Normal; Switch B/Normal - Northern Telecom DMS-100 Series Installation And Maintenance Manual

0
0
0
0
0 switch
0
0 MI Invert/
0
0
0
0 Normal
0
0
0
0
0 * Standard setting when not configured for a modem pool.
0
0 Figure 3.8
0

KBD Enable/Disable:

0 When the KBD (keyboard) Enable option is selected, keyboard dial-
0 ing is performed from the DTE keyboard.
0 option is selected, you can not dial from the DTE keyboard.
0 dialing is done from the DU keypad.
0

Switch A/Normal:

0 This option is the same as Assert CD.
0 to firmware feature CJM04 and higher on the NT4X25AN DU.
0 When the Switch
0 signal is asserted on the RS-232C interface towards the DTE.
0 Switch A option is used when the DTE requires the CD lead
0 asserted before
0 dialing. When the Switch A option is not selected (Normal),
0 CD signal reflects the state of the carrier during the data call.
0 If the DTE does not require the CD lead to be asserted to receive
0 characters during
0 Switch A option.
0

Switch B/Normal:

0 This option is not used on the NT4X25AN /AX DU's. In certain host
0 computer applications, a finite-sized
0 received data
0 data arrives faster than it can be processed, the buffer
0 full. Normal
0 to automatically stop the far-end DTE from sending data.
0 far-end DTE
0 the information lost. In host computer applications the
0 DU provides
0
MI Pulse/
MI and MIC leads are
shorted for 2.5 sec
when a call occurs.
MI and MIC leads are
open for 2.5 sec
when a call occurs.

MI Pulse/MI Level and MI Invert/Normal Settings

(NT4X25AN /AX /AZ)
(NT4X25AN /AX /AZ)
A option is selected, the CD (carrier detect)
receiving characters
Datapath
(NT4X25AN /AX /AZ)
before it is processed further. If the incoming
RS-232C data-flow control does not provide a means
continues to transmit, the host can be overrun and
the host computer with a mechanism for controlling
MI Level
MI and MIC leads are
shorted for the
duration of the call.
* MI and MIC leads are
open for the
duration of the call.
When
This option
during Datapath keyboard
keyboard dialing, do not select the
buffer
297-2121-226
VINTAGE 05.01
the KBD Disable
All
applies only
The
to be
the
is used to save
becomes
If the
NT4X25AZ
3-17