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Multi-Tech Systems MTS2SA-T User Manual

Page 64

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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

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