Cisco Systems DS71-MD4 Manual De Usuario

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DS71-MD4 Serial host and 56k Modem 
10 
Local Modem Option 
 
Figure 5 
 
 
Ring to Answer 
This option sets the number of rings before the unit answers. 
 
Connectivity Timeout 
This option sets the continuous connectivity time (5 to 255 minutes) before the modem automatically 
disconnects. 
 
Inactivity Timeout 
This option sets the time the modem will automatically disconnect, if there is no activity equaling the 
programmed amount of time (1 to 120 minutes). 
 
Cabling 
RJ-45 Cables and Adapters 
DS71-MD4 EIA-232 RJ-45 Signal 
Pin EIA 
232 
Signal 
Signal 
Direction 
Description 
1 DTR  Out 
Handshake, Line Driver Inactive State = High: +12V when power is 
applied. Used as a handshake line to enable/disable the receiving of 
characters.
 
2 GND   
Signal 
Ground 
3 RTS  Out 
Handshake, Line Driver Inactive State = High: +12 V when power is 
applied. Not used to enable/disable.
 
TX 
Out 
Transmit Data Out 
5 RX 
In 
Receive 
Data 
In 
6 DSR  In 
Handshake In. –12V when not used. 
7 GND   
Signal Ground, when Jumper JP6-2 is connected to JP6-3. In order for the   
module to take advantage of “DCD Logon/Logoff” and “Auto Connect 
Port”, Jumper JP6-2 is connected to JP6-1 providing DCD In. 
8 CTS  In 
Used as a handshake line to enable/disable the receiving of characters.
 
 
 
Local Modem Option: 
Rings to Answer ....................1 Auto-answer 1-4, Default 2
 
Connectivity Timeout ...............2 5-255 minutes, Default 60 minutes
 
Inactivity Timeout .................3 1-120 minutes, Default 

Exit ...........................X, CR 
Enter Request :