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QMT8 switch settings
If the QMT8 Asynchronous Data Module (ADM) is used, set the switches as
follows:
Switch 1:
set to zeros (no VFDN)
QMT21C switch settings
If using the QMT21 HSDM, set the dip switches, located on top of the unit
under the flip-up, as follows.
•
•
•
•
•
•
Note 1: Set only one side of the interface to originate the hot line.
Note 2: Forced Data Terminal Ready (DTR) automatically reinitiates a
dropped hot line call.
Switch 3:
1
not used
2
not used
3
FDX (full duplex)
4
modem
5
internal clock
6
no echo
7
auto answer
8
off (no loopback)
Hotline, On; See Note 1.
Forced DTR, On; See Note 2.
FDX (full duplex), On
SYNC, On
INTernal CLK, On
Modem/Network, Modem
ISDN Primary Rate Interface
ISL installation
Page 231 of 396
Switch 4:
1
on
2
on (hot line*)
3
off (DTR-data
terminal
ready-required)
4
on (synchronous)
U5 and U7 must be
jumpered
* Only one side of the
interface should be set to
originate the hot line.
Installation and Configuration
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