Mi Pulse/Mi Level And Mi Invert/Normal Settings - Northern Telecom DMS-100 Series Installation And Maintenance Manual

0 297-2121-226
0 VINTAGE 05.01
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 3.11
0 KBD Enable/Disable:
0 When this switch (number 4 on SW4) is
0 (keyboard dialing) is performed from the DTE keyboard.
0 switch is set to Disable, you cannot dial from the DTE keyboard.
0 Assert CD/Off:
0 When this switch (number 5 on SW4 for NT4X25AD /CH /DF, number 4
0 on SW3 for NT4X25AV) is set to Assert CD, the CD (carrier detect)
0 signal is asserted on the RS-232C interface towards the DTE.
0 Assert CD setting is used when the DTE requires the CD lead to be
0 asserted before receiving
0 dialing. When this switch is set to Off, the CD signal reflects
0 the state of the carrier during the data call.
0 setting if the DTE does not require the CD lead to be asserted to
0 receive characters during Datapath keyboard dialing.
0 Switch B/Normal:
0 This switch is switch number 8 on SW4.
0 applications, a finite-sized buffer is used to save received data
0 before it is processed further.
0 faster than it can be processed, the buffer becomes full. Normal
0 RS-232C data-flow control does not provide a
0 ically stop the far-end DTE from sending data. If the far-end DTE
0 continues to
0 tion lost. In host computer applications the NT4X25DF DU provides
0 the host computer with a mechanism for
0 transmission
0 dard with respect to the RS-232C specification. The
0 arrangement
0 across the data connection. Set the switch to Switch B to
0 3-36
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

(NT4X25AD /CH /DF)
characters
(NT4X25DF)
transmit, the host can be overrun and the informa-
by using an EIA leads arrangement that is non-stan-
lets the host
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.
set to
during
In certain host computer
If the incoming
means
controlling
computer send flow-control signals
KBD Enable, KBD
When this
The
Datapath keyboard
Choose the Off
data arrives
to automat-
far-end DTE
non-standard
select