Multi-Tech Systems MTS2SA-T - Manual (Page 64)

Chapter 6 – Prerequisite Configurations
Multi-Tech Systems, Inc. MultiConnect Serial-to-Serial Adapter User Guide (S000354A) 64
3. Physical Link Established over the Modem Port
For any application such as SMTP Client, HTTP Server, POP3 Client, etc. to function, the PPP link
must be opened up on the modem port.
MultiConnect IP implementation provides three mechanisms for establishing the physical link over the
modem port:
•
Dialing-trig-mode NONE
•
Dialing-trig-mode DTR
•
Dialing-trig-mode Command
Choose the method you desire by configuring the physical link through the Command Line Interface
(CLI). Use the following command to configure the Physical Link Establishment Method:
# set serial [serial-interface] modem dialing-trig-mode
Note: The modem port is set to modem-answering by default.
The command dialing-trig-mode can be used to set the modem port to dial.
Dialing-trig-mode Functionality
None Upon boot-up, the modem starts dialing using the set of configured parameters.
DTR Upon boot-up, the modem is set to the answering state by default.
When the DTR goes high on the device port S0, the modem starts to dial on the
modem port.
Command Link establishment and link termination is at your discretion.
Command to establish the physical link:
# linkup [serial-interface]
Notes:
• This command is valid only for modem port S1 and is invalid for
device port S0.
• This command can be issued only when the dialing-trig-mode
is command.
Examples:
# linkup s1
ERROR: ‘
dialing-trig-mode is not set to command.
# linkup s1
OK: ‘CONNECT 14400 LAPM COMPRESSED’
# linkup s1
ERROR: ‘NO DIALTONE’
# linkup s1
ERROR: ‘NO CARRIER’
# linkup s1
ERROR: ‘NO ANSWER’
Command to terminate the physical link:
# hangup [serial-interface]
Notes:
• This command is valid only for modem port S1 and is invalid for
device port S0
• This command can be issued only when the dialing-trig-mode
is command.
Example:
# hangup s1
OK
This hangs up the physical link