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Accessing the MTU-M Through a Modem
7900-A2-GB20-00
You can access the MTU-M through a modem using the DB9 connector on the
MTU-M front panel.
Procedure
To connect your system terminal to the MTU-M through a modem using the
MTU-M front panel DB9 connector:
1. Connect one end of the cable (supplied) to the MTU-M front panel.
2. Connect the other end of the cable to the modem using one of the following
methods:
— The DB9 to DB25 connection can be made using the terminal cable
supplied with the MTU-M and the following standard cable accessories:
79xx
MTU-M
POWER
FAIL
NMS LINK
NETWORK
LOS/AIS/BER
MODEMS
ALARMS
LOCAL
MAJOR
REMOTE
MINOR
LOOP BK
ABNML
SYSTEM
POWER
ACO
FAIL
ACTIVE
RESET
C
HDSL
O
N
LOS / BER
S
DB9
O
LOOP A
L
E
LOOP B
79xx
Terminal
Cable
Terminal
Cable
DB9
DB9F
RXD
3
3
TXD
2
2
Gnd
5
5
— Or you can customize a cable as follows:
79xx
MTU-M
POWER
FAIL
NMS LINK
NETWORK
LOS/AIS/BER
MODEMS
ALARMS
LOCAL
MAJOR
REMOTE
MINOR
LOOP BK
ABNML
SYSTEM
POWER
ACO
FAIL
ACTIVE
RESET
C
HDSL
O
N
LOS / BER
S
LOOP A
O
DB9
L
LOOP B
E
Pin #
RXD 3
TXD 2
Gnd 5
March 1998
DB9F
DB9F/DB25M
DB9 M/M
Gender
Changer
Gender
DB9/DB25
Change
DB9 M/M
DB9F
DB25M
3
3
2
2
5
5
System Terminal Interface
Modem
DB25F/DB25M
Null Modem
Adapter or Cable
Null Modem
DB25F DB25M
2
2
3
RXD
3
3
2
TXD
7
7
7
Gnd
97-15634
DB25M
Modem
Pin #
3 RXD
2 TXD
7 Gnd
97-15635
4-3
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