D/I Mux III User’s Manual
Appendix G. Modem Interfaces
260
Terminating Connection
At the conclusion of transmission, the connection must be terminated. Follow the steps listed
below for terminating connection with each device listed.
Port Expander
If a port expander, or other black box device, has been configured into the network follow
the steps listed below, otherwise proceed to the next section.
1. Send
the
unlink
command to the port expander, using the following recommended
command string:
0t.r.o.PU0x
2. Wait for an
UNLINK DONE
response (which should appear within 3 seconds).
3. If
the
UNLINK DONE
response is received, proceed to the next section.
4. If there is no response, proceed to the next section.
5. If there is a
LINK UNAVAILABLE
response, clear all possible connections using the
following recommended command strings:
0t.r.o.PU01
0t.r.o.PU02
...
0t.r.o.PU08
6. Wait for a response for each unlink command.
7. If a response of
UNLINK DONE
is received, proceed to the next section.
8. If a response of
LINK UNAVAILABLE
is received, continue clearing all possible
connections as indicated above.
9. When all possible connections have been cleared, proceed to the next section.
Modem
If a modem has been configured into the network, follow the steps listed below, otherwise
proceed to the next section.
1. To ensure that the modem is not in an off-hook state; hang up the modem using the
following recommended
hang-up
command string:
~~~+++~~~ATH0!
2. Wait 2-3 seconds.
3. Send
the
escape
sequence using the following command string:
+++
4. Wait for an
OK
response (which should appear within 3 seconds), and continue.
5. Send the following
hang-up
command:
ATH!
6. Wait for an
OK
response (which should appear within 3 seconds), and continue.
Summary of Contents for D/I Mux III System
Page 20: ......
Page 36: ...Chapter 1 System Overview and Modes of Operation 16 ...
Page 51: ...Chapter 1 System Overview and Modes of Operation 31 ...
Page 79: ...Chapter 3 Installation 59 ...
Page 232: ...D I Mux III User s Manual Appendix B 24 Volt Systems 212 APPENDIX B 24 VOLT SYSTEMS ...
Page 237: ...D I Mux III User s Manual Appendix D Preconfigured Maps APPENDIX D PRECONFIGURED MAPS ...
Page 243: ...D I Mux III User s Manual Appendix E SNMP APPENDIX E SNMP ...
Page 265: ...D I Mux III User s Manual Appendix G Modem Interfaces APPENDIX G MODEM INTERFACES ...
Page 284: ...D I Mux III User s Manual Appendix H Set Report Options APPENDIX H SET REPORT OPTIONS ...