User manual

CLI Reference Guide 83
Parameters Description
<interface_name> Designation you choose for a particular port (e.g.:
mod:1).
at_command Field in which you can designate your AT command
choice.
directory_number
<string>
Telephone number provided by your phone service.
call_type Call type specifies your desiged channel connection
service. Choices are:
• AUTO
- System adapts to the proper
connection setting. The I-modem first tries to
make a V120, then a V110, then a V.34 then
an ordinary analog call if each succeeding
negotiation fails.
• V120
- I-modem negotiates for V120
connections only. If the V120 connection
isn’t made, no connection is negotiated.
• V110
- I-modem negotiates for V110
connections only. If the V110 connection
isn’t made, no connection is negiated.
• MODEMFAX
- I-modem works in analog
mode for modem or fax emulation only. If
you know that you will make and receive
analog calls only, this setting shortens the
connect time.
• CLEAR
- I-modem sets up a synchronous
clear channel, at 64 or 56 Kbps, with a
remote device. Common applications are
videoconferencing and remote access to
mini- or mainframe computers.
• INTERNET
- This setting requires TCP/IP
software be installed on your computer. This
software must deliver asynchronous PPP
through your PC’s serial port. NetManage
Chameleon and MacTCP are examples.) The
I-modem first tries to make a clear-channel
digital connection, converting asynchronous
PPP data from your PC to synchronous PPP,
which is typically required at your Internet
Service Provider’s end of the connection. If
the I-modem can’t make a digital,
synchronous connection, it attempts an
analog V.34 connection. From V.34 on, the
call is negotiated as an ordinary analog call.