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Cooper Bussmann 615M-1 Cellular Data Modem and IP Router Series Manual
47
Rev Version 1.0
External PAD Settings
PAD Mode
Sets the PAD mode of the modem as a Server or Client. In Client mode, the modem
will initiate an outbound connection to the Remote Host IP Address with the
Outgoing Port based on the selected DTR setting. In Server mode, the modem will
accept one incoming connection on the specified Incoming Port. The modem will not
accept multiple incoming connections at the same time. Additional connections are
arbitrated based on the Server Session Closed On and Timeout parameters.
NOTE It is possible to override Server mode and make an outgoing client
connection using the RS-232 command set.
atd*xxx.xxx.xxx.xxx:yyyyy
When in server mode and no connection is active, the atd* command (followed by an
IP address) can be issued to initiate an outbound client connection to the specified
IP address and port as specified after the colon. If no port is specified, the port
number used is the Outgoing Port parameter. To hang-up such a connection, 3 “+”
characters must be inserted into the outgoing stream (“+++”). The modem will return
to command mode once it has seen the “+++” and respond with OK. The connection
can then be broken by entering “ath”. The modem will return to server mode. Such a
client connection can be repeated again as necessary, as long as each connection is
hung-up before a new one is made.
The modem is capable of only 1 PAD connection at a time. When a manual client
connection is in progress (atd*xxx.xxx.xxx.xxx), a connection attempt by an incoming
client may result in the disabling of the PAD function until the next device reset.
Pad Protocol
Sets the data protocol of the PAD to TCP or UDP data. If you have set PAD Mode as
Server, you can choose to support either type of client.
Incoming Friendly IP
Address
Sets the IP address of the device using the PAD functionality.
Server Session
Closed On
This option is only available if PAD mode is Server. This option sets under which
condition the server will terminate an established connection. The default setting is
New Client.
N
EW
C
lIENT
—If a different client attempts to connect, it will be successful and the
current client will be forcibly disconnected without any warning. Otherwise, the
current client remains connected indefinitely.
T
IMEOUT
—A new client is accepted only after a specified timeout. The duration of the
timeout is specified by the Inactivity timeout, or the Hard timeout, or a combination
of both.
Server Inactivity
Timeout
Time after which the current connection with the client is terminated without warning.
This timeout starts over each time the client sends data to the server. This parameter
is ignored if the session closes on New Client. If PAD protocol is TCP, the timeout is
specified in minutes. If PAD protocol is UDP, the timeout is specified in seconds. The
valid range for either is 1-65535. Setting the parameter to 0 will disable this timer.
If both Inactivity Timeout and Hard Timeout are enabled(neither is 0), a client session
is terminated when either timeout is met. In this case, the value for Hard Timeout
must exceed the value for Inactivity Timeout. If the Inactivity Timeout is met, the
client is terminated. If the Hard Timeout is exceeded without meeting the Inactivity
Timeout, the client is terminated by the Hard Timeout.
